- Buyers Guide
750 W, Ku-band TWT Amplifier
The model VZU-6997AB is a 750 W, compact traveling-wave tube (TWT) amplifier that operates across the 12.75 to 14.5 GHz frequency range. It offers high reliability and efficiency in a compact package, and is ideal for transportable and fixed earth station applications where space and prime power are at a premium.
Communications and Power Industries (CPI), Satcom Division, Palo Alto, CA (650) 424-1744.
Circle No. 241
High Voltage Power Amplifiers
The models PA94 and PA95 high voltage power amplifiers operate on power supplies up to 900 V. Both are housed in a power SIP design to reduce board space requirements and feature a staggard pin configuration to accommodate the high voltage capabilities. In addition to a ±50 to ±450 V supply, both models provide 100 mA of continuous output current and up to 200 mA pulse. The PA94 offers speed with a 500 V/ms slew rate, but external compensation allows flexibility in choosing bandwidth and a slew rate based on the application. The PA95 idles quietly by offering the designer a maximum standby current of 1.6 mA. Both units feature a MOSFET output stage that is biased AB for linear operation.
Apex Microtechnology Corp., Tucson, AZ (520) 690-8600.
Circle No. 239
Low Cost, Surface-mount Amplifiers
This family of low cost, surface-mount amplifiers covers the 1 to 500 MHz frequency range for RF and microwave applications in military, industrial and consumer products. The five models (ASMA-101, ASMA-201, ASMA-202, ASMA-203 and ASMA-601) are excellent devices for such broadband applications as digital radios, base stations and repeaters. They are stable 50 W gain blocks featuring good linearity, internal biasing and single positive supply operation. Depending on the model, the nominal power gain ranges from 11 to 13 dB and the typical output power ranges from 22 to 30 dBm at 1 dB compression. The amplifiers are provided in industry-standard, surface-mount, SOIC-8 ceramic package and are available in tape and reel. Price: as low as $25 in quantity. Delivery: stock.
Avnet Microwave Technical Solutions, San Jose, CA (408) 360-4000.
Circle No. 240
20-32 GHz Distributed Amplifier
The model HMC261CB1 GaAs MMIC distributed amplifier is ideal for use in microwave and millimeter-wave point-to-point radios, local multipoint distribution systems (LMDS), very small aperture terminals and other SATCOM applications. It covers the frequency range from 20 to 32 GHz in a ball grid array SMT package. Operating from a single bias supply of +3 to +4 V with a P1dB output power of +12 dBm the amplifier eliminates the need for wirebonding, therefore providing a consistent connection interface. Sample and production quantities are available from stock.
Hittite Microwave Corp., Chelmsford, MA (978) 250-3343.
Circle No. 242
The model 0-SDU-2127 switched filter log amplifier assembly is designed to provide independently controlled, TTL-selectable bandwidths of 3 and 12.5 MHz, and all pass response at a center frequency of 160 MHz for each of two isolated channels. Each channel has a log video output with greater than 70 dB dynamic range (relative to the maximum input of +10 dBm), and channel-to-channel tracking within the same unit is ±1 dB (max). Each channel also has a 0 ±2 dBm limited IF output with 2° RMS phase tracking at center frequency between channels with up to a 15 dB input power delta. Size: 2.50" ¥ 1.25" ¥ 0.50". Price: $3795 (10-24).
Signal Technology Corp., Olektron Operation, Beverly, MA (978) 524-7444.
Circle No. 244
InGaP/GaAs HBT MMIC Amplifiers
The model NGA-3 broadband InGaP/GaAs HBT MMIC amplifiers offer excellent output IP3 and flat gain response for applications requiring high gain and high linearity. These RFICs utilize a Darlington configuration for broadband performance and are ideal for use in cellular, ISM and PCS applications. The NGA-3 operates from DC to 4 GHz and is available in an 86-mil surface-mount package.
Stanford Microdevices Inc., Sunnyvale, CA, (800) 764-6642.
Circle No. 245
These lightweight, high power, linear amplifiers employ LDMOS FETs for pulse AVIONICS applications. Using proprietary device and circuit technology, the amplifiers operate reliably at elevated DC voltages and exhibit ultralinear class AB performance. They are specifically optimized to provide undistorted, open-loop amplification of the new, complex, high data rate AVIONICS modulations.
Zeta, an Integrated Defense Technologies company, San Jose, CA (408) 434-3602.
Circle No. 246
Fixed-station Panel Antenna
The model AP15-2400/180 fixed-station panel antenna operates across the 2.3 to 2.5 GHz GWCS/ISM frequency band and is ideally suited for wireless Internet applications where the provider wants to sectorize coverage. The unit has a small, rugged design for low visibility and features a wide horizontal beamwidth, high front-to-back ratio and favorably high gain. The AP15-2400/ 180 is available with down tilt brackets and is ready to ship immediately.
Kathrein Inc., Scala Division, Medford, OR (541) 779-6500.
Circle No. 247
Cellular T/R and Antenna Changeover Switch
The model SW-425 MMIC SPDT 3 W cellular T/R and antenna changeover switch is available in a low cost SOT-26 plastic package and covers the DC to 3 GHz frequency range. It is well suited for use in portable phones and data radios as an internal/external antenna select switch or for products requiring low insertion loss, high linearity and good isolation. The switch has positive or negative control voltages, good device-to-device consistency and high linearity for CDMA, TDMA, GSM and W-CDMA applications. Delivery: stock.
M/A-COM, Lowell, MA (800) 366-2266.
Circle No. 248
Sectorized Hub Antenna
The AMH1000 series SectorShapeTM antennas are designed for MMDS hub (head-end) appli- cations. They have shaped vertical patterns that provide uniform coverage as a function of range and eliminate nulls. Down-tilt is achieved electrically with a cosecant-squared elevation pattern ensuring uniform illumination of all subscribers in range. Shaped azimuth patterns ensure uniform sector coverage, reduced spillover into adjacent cells and lower backlobes. Nine horizontally polarized standard models are available covering the 2100 to 2700 MHz frequency range. Azimuth sector coverage of 45°, 60° and 90° is available and power capability is rated at 3000 W. Better than 40 dB cross-polar rejection at all angles is achieved and gains are 20, 18.5 and 17 dBi for the 45°, 60° and 90° azimuth, respectively.
REMEC Magnum Inc., San Jose, CA (408) 432-9898.
Circle No. 251
Spread Spectrum Panel Antennas
These new directional panel antennas utilize the company's patent-pending printed-circuit design that consistently provides superior gain and wideband coverage with a low profile package. The antennas provide gain flatness vs. frequency across the 2.4 GHz ISM bands with an SWR of < 1.5, impedance of 50 W and front-to-back ratio of more than 25 dB. The antennas provide 15 and 17.7 dBi gain, respectively. Both are vertically polarized with a vertical beamwidth of 19° and can withstand more than 20 W of power input. The devices include a wide variety of connector choices and a 12" RG58/U pigtail option for added versatility and ease of installation.
MAXRAD Inc., Hanover Park, IL (800) 323-9122 or (630) 372-6800.
Circle No. 249
Airborne Radiometer Array Antenna
The model 9909-832 airborne radiometer array antenna is ideal for any high gain, high effi- ciency low loss application. It is a 16 ¥ 32 element array of boxhorn elements and corporate waveguide power combiner that are machined together out of a solid aluminum plate. The antenna operates over the frequency range of 31.475 to 31.725 GHz with an SWR of £ 1.8 (max) and gain of 41 dB at midband. Weight: 4 lb. Size: 11.170" ¥ 11.170" ¥ 0.945".
Seavey Engineering Associates Inc., Pembroke, MA (781) 829-4740.
Circle No. 252
Segmented Reflector Assembly
This off-the-shelf composite segmented reflector is designed for a broad range of microwave and RF communication applications and is available in four standard diameters ranging from three to eight feet with focal lengths of 13.5 to 36.0 inches, respectively. Each assembly is uniquely designed for precision and portability in a variety of rapid development applications and can be assembled in a matter of minutes without the use of any tools. Each reflector is comprised of a center hub and four to 10 interchangeable petal segments. Lightweight honeycomb core materials are used as the structural reinforcement together with a variety of composite laminates and high efficiency reflective materials. Surface uniformity of the dish is 15 to 25 mils RMS.
Pacific Radomes Inc. (PRI), Santa Clara, CA (408) 727-4777.
Circle No. 250
3G Radio Chip
Developed in conjunction with Mitsubishi Electric Corp. of Japan this direct-conversion radio chip is designed for use in third-generation (3G) cellular phones and is used in cellular handsets for the wideband CDMA (W-CDMA). Direct conversion (zero IF) eliminates the intermediate frequency section of traditional radio technologies and enables radio designers to take a high frequency or RF input signal directly to baseband or low frequencies, eliminating many components and significantly raising efficiency. This result is large savings in both power consumption and costs.
Analog Devices, Norwood, MA (800) 262-5643.
Circle No. 255
The model RF2516 monolithic integrated circuit is intended for use as a low cost AM/ASK transmitter. It is provided in a 16-pin SSOP-16 package and is designed to provide a phased-locked frequency source for use in local oscillator or transmitter applications. It can be used in applications in both the North American and European VHF/UHF bands and operates in the 100 to 960 MHz frequency range. The integrated VCO, phase detector, prescaler and reference oscillator transistor require only the addition of an external crystal to provide a complete phase-locked loop (PLL). In addition, the chip includes an automatic lock-detect feature that disables the transmitter output when the PLL is out of lock.
RF Micro Devices Inc., Greensboro, NC (336) 664-1233.
Circle No. 256
Dual-Band GSM and TDMA Downconverter Chip
The model MC13740A IC integrates two complete downconverters into a single 24-pin plas- tic TQFP surface-mount package. Performance is enhanced by using an approach that provides excellent linearity at low current, resulting in improved battery life. Integrating all of this functionality in a small package saves on printed circuit board space. Each IC contains a low noise gain-selectable amplifier, buffered local oscillator output, and mixer. The MC13740A is usable at a wide range of frequencies up to 2.0 GHz, and maximizes application flexibility in IF frequency selection and filtering due to open collector outputs and simple off-chip low noise amplifier matching. Price: $3 (10,000).
Motorola, Semiconductor Products Sector, Phoenix, AZ (602) 413-4991.
Circle No. 243
Miniature Transfer Switch
The model SWN-2181-TRA (options 0518, 2SH) is a miniature high speed, low loss trans- fer switch that works from 500 MHz to 18 GHz. (Other frequencies are available.) Insertion loss is < 1.3 dB (typ) at 500 MHz and < 3 dB (max) at 18 GHz. Isolation is > 80 dB at 500 MHz and > 65 dB at 18 GHz, and SWR is 2 (typ). Switching speed is 65 ns with delay on and 30 ns with delay off. The power supply is 5 V at 85 mA and -12 V at 70 mA. Size: 1.0" ¥ 1.0" ¥ 0.5". Weight: < 1 oz. (typ).
American Microwave Corp. (AMC), Frederick, MD (301) 662-4700.
Circle No. 215
These factory-installed, right-angle connectors provide the excellent electrical performance of a straight connector with the mechanical advantages of a right-angle connector. They are intended for use with the company's SureFlex cable assemblies. In factory tests, 1/2-inch cable assemblies with these right-angle connectors provided a return loss of 28 dB or better up to 2.5 GHz. The connectors are available on SureFlex cable assemblies for 1/2-, 3/8- and 1/4-inch HELIAX" Superflexible foam dielectric cable.
Andrew Corp., Orland Park, IL (800) 255-1479.
Circle No. 216
High Power, 120 dB Attenuator
The model 100-SA-MFN-120 is a 120 dB, 50 W attenuator with accuracy of ±1.5 dB. This convection-cooled unit offers 100 W average and 2000 W peak power rating and a frequency range of DC to 1 GHz with 1.15 SWR. Available connectors are N-type male and female. Size: 9.15" ¥ 2.75" ¥ 2.65". Weight: 52 oz.
BCP (Bird Component Products), Largo, FL, (727) 547-8826.
Circle No. 217
Waveguide Dual-junction Isolator
The model KX323 X-band waveguide dual-junction isolator can handle 200 W average and 10 kW peak forward and reverse power. It is designed for severe military environments and typical specifications are 1.15 SWR (max), 0.4 dB insertion loss and 55 dB isolation.
Channel Microwave Corporation, Camarillo, CA (805) 482-7280.
Circle No. 218
5.7 GHz Cavity Diplexer
The model CMT101 5.7 GHz cavity diplexer represents a series of diplexers with center frequencies from 5735 to 5840 MHz with 3 dB bandwidths up to 46 MHz. Insertion loss is < 2.0 dB (typ), return loss is 16 dB (18 dB (typ)) and channel-to-channel isolation is > 90 dB. Size: 3.5" ¥ 4.5" ¥ 1.5".
Commercial Microwave Technology (CMT), Diamond Springs, CA (530) 642-1961.
Circle No. 219
The CF series buried resistors are designed and formulated to be co-processed with 951 Green Tape laminates. The series is composed of three products ranging from 100 W to 10 kW per square. The devices can be processed to a tolearance of 20 to 30 percent, depending on the precision of the printing process.
DuPont, Microcircuit Materials, Wilmington, DE (800) 284-3382.
Circle No. 220
2 mm Hard Metric Connectors
The PCN21 series 2 mm hard metric connector system complies with the requirements of IEC 61076-4-101. Type A (with 110 contacts), Type B (with 125 contacts) and Type C (with 55 contacts) are available with compliant press fit terminations on plugs and receptacles. The receptacle contact design utilizes a double contact point to assure high reliability whether the project is for transmission systems, base stations, industrial computer boards, measuring instruments, control equipment or other devices. Ground connection on the PCN21 series is assured by using metal covers and separate ground terminals. The connections can also be polarized and color coded as required in Compact PCI applications. Prices: Type A, $6 (non-shielded), $9 (shielded); Type B, $7 (non-shielded), $10 (shielded); and Type C $4 (non-shielded), $6 (shielded). Delivery: four to eight weeks.
Hirose Electric (USA) Inc., Simi Valley, CA (805) 522-7958.
Circle No. 223
High Dynamic Range pHEMT
The model LPD200P70 low noise packaged pseudomorphic high electron mobility transistor (pHEMT) device features high dynamic range. The ceramic P70 package is ideal for low cost, high performance applications up to 18 GHz. Applications include high dynamic range receiver preamplifiers for commercial applications including cellular/PCS systems, broadband commercial instrumentation, military electronic warfare amplifiers and commercial space applications.
Filtronic Solid State, Santa Clara, CA (408) 988-1845.
Circle No. 221
High Power Attenuator
The model 83-3001TC high power attenuator offers the highest performance of all attenuator styles. Direct attachment to the heat sink yields high CW power handling and matching circuitry provides wideband flat performance. The devices can be used for reduction of mismatches, reverse power protection and signal sampling termination applications and feature a nominal impedance of 50 W, frequency range of DC to 4 GHz and SWR of 1.50 (max). Operating temperature range is -55° to +150°C, and average power handling is 20 W.
Florida RF Labs Inc., Stuart, FL (800) 544-5594 or (561) 286-9300.
Circle No. 222
High Frequency DC Blocks
The models 8177-8179 in-series DC blocks use the 2.4 mm connector, operate to 50 GHz and offer a maximum insertion loss of 1.5 dB and SWR of 1.75 (max). The models 8180 and 8306 between-series units use 2.9 mm and 2.4 mm connectors. Insertion loss is 0.5 dB (max) with an SWR of 1.45 (max) to 40 GHz. Both series are ideal when used with test equipment that must be protected from unwanted DC voltages; the between series units offer the added advantage of serving as an adapter as well.
Inmet Corp., Ann Arbor, MI (888) 244-6638.
Circle No. 224
Packaged Specialty Crystals
The TO-5 packaged specialty crystals offer a wide frequency range for microwave, radar, telecommunications and satellite communications applications. The crystal, with a range of 7 to 125 MHz, is specified at series resonance and optional temperatures of 25° or 75°C. The thru-hole TO-5 with a standard head length of 0.5" is mounted at three or four points. Manufactured for superior shock and vibration performance, this crystal is designed to meet the high stability, low phase noise applications commonly required of crystals that are multiplied up to the gigahertz range. Although the TO-5 crystals are specified at series resonances and operational temperatures, they can be manufactured to meet other values.
International Crystal Manufacturing Co. Inc. (ICM), Oklahoma City, OK (405) 236-3741.
Circle No. 225
PCS/DCS Quad Hybrid
The model QHD-2H-1.9G Multi-Mix surface-mount unit has a frequency range of 1.7 to 2.0 GHz and features an insertion loss of < 0.3 dB, SWR of better than 1.18 and isolation > 23 dB. The phase and amplitude balance are less than ±2° and ±0.25 dB, respectively, and make the units ideal for applications involving IQ networks, power amplifiers, signal distribution and processing with power requirements up to 100 W. All of the units are manufactured using a fusion bonding process, which yields a homogeneous monolithic dielectric structure with reliability, ruggedness and electrical performance that are superior to conventional adhesive bonding techniques. Size: 0.560" ¥ 0.350" ¥ 0.075".
Merrimac Industries, West Caldwell, NJ (888) 434-6636.
Circle No. 227
These SMA connectors meet the RF connector needs of applications including process controls, PC/LANs, wireless systems, telecommunications, base stations and microwave systems. Available in industry-standard 50 W versions, the connectors are offered in more than 40 different styles and configurations including crimp, clamp, PC board mount, chassis mount and bulkhead mount, as well as a wide variety of standard and custom plating alternatives. The connectors meet all industry standards and are tested for operation across the DC to 18 GHz frequency range. They carry an AC voltage rating of 500 V, with an insulation resistance of 5000 MW and typical contact resistance of 2 mW.
Methode Electronics Inc., Methode RF Products, Union, NJ (908) 688-8000.
Circle No. 228
10-40 GHz Waveguide Filters
These low cost cast millimeter waveguide bandpass filters operate in the frequency range of 10 to 40 GHz and use a casting process that enables complex multi-part assemblies to be produced as just one precision component, reducing part counts and assembly time. This method is proven to be exceptionally consistent compared to traditional CNC production methods. Part reduction has also been achieved through an innovative tuning method, which eliminates the need for tuning screws, reducing tuning time and removing parasitic resonances. This minimization of material allows for a reduced weight, which is an important criterion in aerospace and space applications.
Micro Metalsmiths, Pickering, N. Yorks, England +44 (0) 1751 475058.
Circle No. 229
Inter- and Intra-series Coaxial Adapters
This connector series includes SMA, SSMA, TNC, N, BNC, 7 mm, 3.5 mm, 2.9 mm, 2.4 mm, SMB, CMS, SSMB, SMC, SSMC, UHF, mini-UHF, 7/16 DIN, MCX and MMCX. Standard adapters are usable to 12 GHz or to the operating range of the lower frequency interface. Precision adapters are available to extend the TNC and N range to 18 GHz. Seventy-five-ohm adapters are also available in the appropriate series.
MIDISCO, Islandia, NY (800) 637-5353.
Circle No. 230
90° Surface-mount Power Splitter
The model HPQ-10W two-way 90° surface mount, power splitter is designed especially for use in the 880 to 1030 MHz frequency range. It provides good isolation of 22 dB (typ) and amplitude and phase unbalance of 0.85 and 1.0 dB, respectively. Insertion loss is 0.28 dB. The typical in/out SWR is 1.17. Applications include I&Q modulator and wideband amplifier matching. Price: $6.95 (10-49). Delivery: one week.
Mini-Circuits, Brooklyn, NY (718) 934-4500.
Circle No. 231
These low loss, two-way, SMA power dividers/ combiners are designed to cover wireless bands from cellular through industrial, scientific and medical (ISM). They suffer minimal insertion loss while delivering high isolation between output ports with exceptional phase match and amplitude balance. All of the models in the series have a worst-case amplitude unbalance of 0.1 dB and phase match of 1°. The model 802-2-0.900 is designed for cellular/GSM applications and measures 1.50" ¥ 2.00" ¥ 0.44". Insertion loss is 0.15 dB (typ), SWR is 1.05 and isolation is 30 dB.
MECA Electronics Inc., Denville, NJ (973) 625-0661.
Circle No. 226
9.0-9.2 GHz Isolator
The IX2E isolator operates in the 9.0 to 9.2 GHz frequency range with an isolation of 30 dB (min), insertion loss of 0.1 dB (max) and SWR of 1.6 (max), and is compliant with MIL-I-45208A. Operating temperature range is -50° to +85°C. Units with similar characteristics can be provided over a wide range of frequencies.
Pathwave Enterprises, Oceanside, CA (760) 966-1044.
Circle No. 233
The models MGFS48V and MGFL48V L- and S-band push/pull internally matched FETs (IMFET) are 12 V operational devices suitable for wireless local loop, base stations, radio links and other communications applications where high power, high efficiency and high linear gain are paramount. Both of the GaAs power FETs are 60 W devices and come hermetically sealed in metal ceramic packaging for high reliability. The model MGFS48V2527 produces 60 W (typ) output power over the 2.5 to 2.7 GHz bandwidth, with a high power gain rated at 10 dB (typ) and a high power-added efficiency of 40 percent (typ). The model MGFL48V1920 is intended for 1.9 to 2.0 GHz applications and produces 60 W (typ) output power with a high power gain of 11.5 dB (typ) and a high power-added efficiency of 45 percent (typ). The devices are both rated at -20 V gate to drain and -10 V gate to source voltages. Channel temperature during operation is approximately 175°C and can be stored at temperatures ranging from -65° to +175°C.
Mitsubishi Electric Europe BV, Hatfield, Herts, UK +44 (0) 1707-278 900.
Circle No. 232
High Dynamic Range Mixer
The model PV-50-A high dynamic range mixer has an LO input of +27 dBm and covers the frequency range of 500 to 2000 MHz. Conversion loss is 7.0 dB, IP3 is +34 dBm, LO/RF isolation is 30 dB, LO/IF isolation is 25 dB and P1dB is +22 dBm. The units are available in surface-mount or connectorized packages.
Pulsar Microwave Corp., Clifton, NJ (800) 752-2982.
Circle No. 234
Miniature EMI Filters
These miniature C and L section solder-in-style coaxial high frequency electromagnetic interference (EMI) filters are designed for applications where glass hermeticity is required on one end only. They offer suppression from 10 MHz to 10 GHz and can operate continuously at +150°C and will withstand +300°C installation temperatures. The series meets MIL-PRF-28861 standards and is offered with a working voltage of 50, 100 or 200 V and a capacitance of 10,000, 5000 or 1000.
Sierra-KD Components, a division of Maxwell Technologies Inc., Carson City, NV (775) 887-5700.
Circle No. 235
Semirigid Cable Products
These semirigid cable products eliminate the normal difficulties associated with dielectric expansion during automated soldering processes. The cables' unique low density dielectric, composed of microporous PTFE, maintains position even with repeated exposure to typical soldering operation temperatures. This high performance product line is available in coils and sticks as well as formed assemblies. Standard cable sizes range from 0.085" to 0.250".
Storm Products - RF/Microwave, Hinsdale, IL (888) 347-8676 or (630) 323-9121.
Circle No. 236
C-band Double Balanced Mixer
This C-band double balanced mixer utilizes multilayer microstrip technology and covers the frequency range of 3.6 to 4.8 GHz. Housed in a surface-mount leadless package, conversion loss is 8 dB (typ) with L-R isolation of 25 dB and L-I isolation of 17 dB. The mixers are available at various LO drive levels. Size: 0.3" ¥ 0.2" ¥ 0.1".
Synergy Microwave Corp., Paterson, NJ (973) 881-8800.
Circle No. 237
Miniature Chip Trimmer Capacitors
The new JZL and JRL miniature chip trimmer capacitors maintain the ±1 percent capacitance drift specification of the company's JZ and JR series with a 25 percent price reduction. Available capacitance ranges are 4 to 10 pF and 7 to 20 pF, respectively. Delivery: stock to four weeks.
Voltronics Corp. International, Denville, NJ (973) 586-8585.
Circle No. 238
Hyperabrupt Junction Varactor Diode
The model SMV1269-074 dual silicon tuning varactor is in a common cathode configuration and specifically designed for high volume battery operation. Packaged in the ultra small size SC-70 package, the high capacitance ratio and low Rs of this varactor make it appropriate for low noise VCOs used at frequencies in wireless systems to beyond 2.5 GHz. Applications include low noise and wideband UHF and VHF VCOs for GSM, PCS, CDMA and analog telephones. Price: 19¢ (100,000).
Alpha Industries, Woburn, MA (781) 935-5150.
Circle No. 253
60 W S-band Twin-transistor GaAs MESFET
The model NES2427-60 twin-transistor GaAs MESFET is designed to serve as an output stage in high power S-band transmitter applications. It delivers 60 W of output power with low distortion and high linear gain. The primary frequency range is 2.5 to 2.7 GHz, but with modified external matching the unit can deliver more than 200 MHz of instantaneous bandwidth anywhere from 2.1 to 2.8 GHz. An internal matching network provides partial matching, while an external circuit completes the match to 50 W and combines the two sides of the device in either a balanced or push/pull configuration. The high linearity of the unit makes it ideal for applications that demand high data rate performance. Price: $274 (100).
California Eastern Laboratories (CEL), Santa Clara, CA (408) 988-3500.
Circle No. 254
These large-format panels are designed primarily for the company's ComClad family of high frequency laminates for circuits used in wireless communications. They can also be used in wireless local loop, microstrip antennas, array antennas and a variety of other high frequency wireless applications. ComClad features a dielectric constant of 2.6, loss tangent of 0.0025 and a completely homogenous Noryl plastic dielectric. Size: 24" ¥ 110". The panels are available in 0.030- and 0.060-inch thicknesses. Other sizes and thicknesses can be customized upon request.
Sheldahl Inc., Northfield, MN (507) 663-8477.
Circle No. 257
Seam Sealing System
The WS9000 series seam sealing system combines precision microwelding capabilities with a rotating wheel and mandrel electrode configuration that creates uniformly consistent seam welds in a single pass. The system is specifically designed to provide a complete integrated solution for production welding of difficult cylindrical materials, such as cans, battery cells, wire screen mesh filters, braided sleeves and wire. Users can load material directly on to the electrode mandrills, which rotate at a user-programmable speed. The system can create continuous radial welds, such as those required for sealing the lid on to a cylinder, for a variety of assemblies ranging from as small as 0.125" in diameter up through 2".
MicroJoin Inc., a subsidiary of Palomar Technologies Inc., Poway, CA (858) 877-2100.
Circle No. 259
Circuit Board Plotter System
The ProtoMat" 92s-II circuit board plotter system features a 16.5" ¥ 15" working area, programmable spindle speeds up to 32,000 rpm and a variety of special tools to easily handle the production of large single- and double- sided prototype PCBs, step and repeat of smaller sizes, solder masks, stencils and engraved front panels. The system creates geometries as small as 4 mils and drills holes as small as 12 mils with ±0.2-mil reproducibility. It routes any board contour, cuts prototype solder masks suitable for fine pitch SMT circuits and cuts prototype stencils for screen printing solder paste on PCBs. A range of software tools for easy transfer of CAD/CAE files editing of artwork and automated control of the plotter are also provided.
LPKF Laser & Electronics, Wilsonville, OR (503) 454-4203.
Circle No. 258
Planar EM Field Modeling Software
Ensemble 6.1" is intended for the EM design needs of the wireless and wired telecommunications markets. It offers designers of RFICs, high frequency hybrid PCBs, MMICs and antennas complete capabilities for planar EM field modeling. The software offers an easy-to-use interface and is a planar method-of-moments (MOM) field simulator that computes EM fields, radiation and circuit models for high frequency planar structures. Results can be examined in S parameters, field patterns and current plots. Black-box elements are combined with full-wave EM analysis, enabling a designer to simulate complex circuits quickly and easily. In addition, both closed-cavity and open-region formulations of the MOM can be simulated simultaneously.
Ansoft Corp., Pittsburgh, PA (412) 261-3200.
Circle No. 260
CST Design Studio enables the breakdown of complex systems into smaller components, which then can be analyzed by the simulator best suited to the particular application domain. Everything then can be combined to obtain the S-parameter results for the entire system. This capability serves to greatly speed up the analysis and optimization of complex or highly resonating structures. The software also allows the incorporation of analytic components into the system. The parameters of analytic components do not require the repetition of any electromagnetic analysis in order to obtain the new system behavior, which typically leads to response times of the devices' analysis within seconds.
CST of America Inc., Cambridge, MA (617) 576-5857.
Circle No. 261
Microwave Link Design Software Tool
IQ Link version 7.2 microwave link design software offers enhanced point-to-multipoint engineering functionality and improved display of GIS data within the Network View module. Features include a coverage plot, selective line-of-sight module, network view elevation display enhancement and three-dimensional entry/display/calculation of antenna patterns. The software is compatible with Solaris versions 2.6 and 2.7 as well as Oracle version 7.3.4 software.
Comsearch, Reston, VA (703) 476-2717.
Circle No. 262
The models PE9600 and PE9700 phase-locked loops (PLL) feature greater than 10 dB in phase noise improvement and one-tenth the power consumption of competitive devices while providing precise frequency synthesis capabilities for commercial satellite communications. The PE9600 operates at up to 2.2 GHz and is combined with an external prescaler to generate LO signals, which the prescaler divides down to 1.4 GHz, placing it within the PLL's operating frequency. The PE9700 can operate at up to 3 GHz and is intended for newer designs, eliminating the external prescaler function and reducing the parts count and cost of a frequency synthesizer board. Both chips are fabricated using the company's patented UTSi" CMOS process technology, which utilizes a synthetic sapphire substrate that is a pure insulator. Price $2500 (100).
Peregrine Semiconductor Corp., San Diego, CA (858) 455-0660.
Circle No. 264
16-21.5 GHz Dielectric Resonator Oscillators
These new 16 to 21.5 GHz fundamental frequency, externally referenced dielectric resonator oscillators can be used as local oscillators in MMDS or LMDS systems or any design where phase noise performance, small size or low power consumption are critical. RF output power is +20 dBm (typ) and harmonics are less than -40 dBc. SWR is less than 1.5 with a standard supply voltage of 9 to 16 V DC at less than 200 mA current with 5 V DC versions also available at less than 135 mA (0.68 W). Output power variation is less than 1.3 dB across the full temperature range of -40° to +75°C. Typical phase noise varies from -110 to -115 dBc/Hz at 100 kHz offset. The units come standard with SMA connectors and EMI shielding. Size: 1.5" ¥ 2.0" ¥ 0.5".
Lucix Corp., Camarillo, CA (805) 987-6645.
Circle No. 263
The model M2L-83N-5AV 360°, 40 dB PIN diode I & Q vector modulator that operates from 16 to 24 GHz and offers simultaneous phase and amplitude control. Total phase error across the band is < ±22° and amplitude error is < ±2.5 dB. SWR is 2.2 (min) and insertion loss is < 20 dB. The device demonstrates a linear control input slope with output voltage. With monotonic performance, it is digitally controlled via two sets of 12-bit TTL-compatible, binary logic inputs and the switching speed is less than 500 ns. A frequency range of 2 to 18 GHz is also available.
G.T. Microwave Inc., Randolph, NJ (973) 361-5700.
Circle No. 267
L- and S-band Linearizers
The model BAFL-1500C/2000C predistortion linearizers are compact, easy-to-install units that operate over the 1600 to 1700 MHz and 2300 to 2400 MHz frequency ranges, respectively. The devices are designed for TWTAs and klystrons and can provide an effective 4¥ power increase with multicarrier traffic. The SWR is < 1.8 and gain flatness is < ±0.5 dB across the band.
Linearizer Technology Inc., Hamilton, NJ (609) 584-8424.
Circle No. 269
Coaxial Switch Matrices
The models 2301 and 2401 bidirectional, coaxial switch matrices are configured with up to 10 SP10T switch assemblies and are directed towards ATE, envionmental/laboratory test equipment and programmable patch panel/interconnect applications. The switch matrices provide excellent RF characteristics over the DC to 18 GHz frequency range and have an operating temperature range from 0° to +50°C. Impedance is 50 W and switching speed is 50 ms. Each unit provides a solid-state controller with a liquid crystal display (LCD) front-panel display and keypad for manual override and three remote interfaces (RS-232, RS-422 and IEEE-488/GPIB) and is enclosed in a 5.25" ¥ 19.00" ¥ 20.00" rack-mountable chassis designed with EMI integrity. Options include rack slides, redundant power supplies and type N or BNC connectors.
Dow-Key Microwave Corp., Ventura, CA (805) 650-0260.
Circle No. 266
Digital Microwave Radio
The 3000 series SONET/SDH digital microwave radio offers a cross-polarization interference cancellor feature that allows transmission on both the horizontal and vertical polarity of any given frequency pair. This feature makes it possible to transmit up to 16 155 MB OC-3s in the 6 GHz band. The radio accommodates today's single OC-3 needs with the flexibility to transport up to 48 DS3s or 1344 DS1s which provide network systems with the ability to respond more quickly and efficiently to the growth demands of a booming telecommunications industry. Other features include a modular design, excellent threshold/interference ratio and standard automatic transmitter power control and synchronization flexibility.
NEC America Inc., Radio Communications Systems Division, Irving, TX (972) 751-7211.
Circle No. 270
Noise Figure Analyzer
The 1.5 GHz N8972A and 3.0 GHz N8973A noise figure analyzers feature greatly improved speed and accuracy as well as a more flexible and intuitive user interface that simplifies noise figure measurements. Both devices provide a real-time display of noise figure or gain vs. frequency, easy measurement setup, built-in data storage and printer connectivity. The N8973A offers two measurement modes, faster throughput and narrowband measurements. It has selectable bandwidths for 4 MHz down to 100 kHz, which allows verification of noise figure according to the most stringent specifications. Prices: $16,750 (N8972A); $22,750 (N8973A).
Agilent Technologies Inc., Palo Alto, CA (800) 452-4844, ext. 7021.
Circle No. 272
Universal Power Sensor
The model MA2481A universal power sensor operates from 10 MHz to 6 GHz and overcomes the limitations of conventional power sensors while allowing fast and accurate power measurements to be made on wide-bandwidth signals such as W-CDMA, N-CDMA, EDGE, HDTV and multitone. The unit combines the fast response time and low power sensitivity of a conventional diode sensor with wide dynamic range for true RMS detection. The MA2481A increases overall sensor dynamic range to 80 dB and has three percent linearity up to 20 dBm average power. Price: $1750. Delivery: two weeks.
Anritsu Co., Microwave Measurement Division, Morgan Hill, CA (800) 267-4878.
Circle No. 273
20 MHz Function Generator and Analyzer
The model 625A function generator and analyzer allows the user to access a broad range of operating modes such as arbitrary waveform, pulse, word/data generation, function, VCO, AM/FM, SSB, FSK and burst. Its build uses the latest advances in DSP and DDS technology, which ensures calibrated and drift-free performance, as well as signal measurement and analysis functions such as voltage/power measurement and DTMF detection. The device delivers clean, fully synthesized, DC to 20 MHz modulated or unmodulated waveforms with 0.1 Hz frequency resolution and 1 mV and 0.1 dB amplitude resolution. Features include a large, easy-to-read LCD display, which allows the user to see all modulation parameters simultaneously.
Berkeley Nucleonics Corp. (BNC), San Rafael, CA (415) 453-9955.
Circle No. 274
The Kikusui model PFX20W-12 battery tester is a charge/discharge tester for initial performance and life tests of high performance secondary batteries, including lithium ion batteries often used in portable devices such as cellular telephones and portable personal computers. It is designed to meet the increasing demand for multichannel testing in production lines as well as in research and development, and comes with a five-year warranty. The PFX20W-12 is ready for actual-load simulations of single cells or pack batteries and includes six charge/discharge units, each with channels A and B that can switch to divided or parallel connection. Price: $11,592.
IFR Systems Inc., Wichita KS, (800) 545-8784.
Circle No. 275
Mixed-signal Test Set
The model CS2010 digital broadband test set is an off-the-shelf solution targeting the evolving demand for new voice, data and spectrum re-use products in wireless systems. It can be tailored by the user to generate, record and analyze complex broadband and mixed signals such as QAM, W-CDMA, IS-136, EDGE, COFDM and TDMA simultaneously (depending on the number of channels). The single-box instrument supports product evolution from system definition and protocol development through pre-standard release verification, prototyping and field testing, to final production test.
L-3 Communications, Celerity Systems, Cupertino, CA (408) 873-1001.
Circle No. 276
7mm Calibration Kits
The model series 2660 coaxial 7mm TRL calibration kits are actually tri-kits capable of per- forming three types of calibrations. A full two-port calibration can be made over the entire connector bandwidth using TRL methods. In addition, a one- or two-port short-open-load-thru (SOLT) fixed-load calibration can be performed and a one-port short-open (airline + load) calibration also can be performed for gated measurements. The kits operate up to 18 GHz and are available with several adapter options including 7 mm to NMD 3.5 mm and 7 mm to NMD 2.4 mm test port adapters.
Maury Microwave Corp., Ontario, CA (909) 987-4715.
Circle No. 277
Rotary Vane Attenuators
This manually adjustable rotary vane attenuator is ideal for microwave test departments where simple and quick adjustment of attenuation is required. It is useful when testing receiver sensitivity or amplifier compression and operates over a 8 GHz to 50 GHz frequency range. The unit provides 0 to 60 dB of calibrated attenuation by rotating a resistive vane mounted in a circular waveguide section. The manual range initially covers WG sizes 16, 17, 18, 20, 22 and 23, but others will be introduced later this year. Delivery: stock.
Quasar Microwave Technology Ltd., Newton Abbot Devon, UK (0) 1626 834222.
Circle No. 278
Vector Network Analysis Systems
These WR-05 vector network analysis systems use microwave vector network analyzer equipment to achieve millimeter-wave vector/amplitude measurement capability. They can be used in either the forward direction with one T/R module or in the forward and reverse directions with two T/R modules. Systems are available for all waveguide bands from WR-22 to WR-05.
Oleson Microwave Labs, Morgan Hill, CA (408) 779-2698.
Circle No. 271
CATV Verification Filter Set
These preselectors are designed specifically for CATV performance tests mandated by the Federal Communications Commission (FCC) and cover both the 48 to 750 MHz and 55 to 88 MHz frequency ranges. Included are six-fixed tuned filters for reverse channels T-7 through T-12 and a 20 dB gain broadband amplifier (45 to 1000 MHz). The entire system is packed in a ruggedized portable field case, which includes a 40-hour rechargeable battery for extended field use.
K&L Microwave Inc., Salisbury, MD (410) 749-2424.
Circle No. 268
The models FS-Z60 and FS-Z75 external mixers allow measurements up to 60 and 75 GHz, respectively. The devices offer low conversion loss and a 1 dB compression point of typically +6 dBm and have a very wide dynamic range and high measurement sensitivity. For measurements in the millimetric-wave range the frequency range of spectrum analyzers can be extended by external mixers. These mixers offer this type of extension for waveguide bands U (40 GHz to 60 GHz) and V (50 GHz to 75 GHz). Due to their double-diode design, the mixers have a low frequency response ripple and require no additional biasing. Low conversion loss and high measurement sensitivity enable measurements on low level signals. In addition, the high 1 dB compression point of +6 dBm yields wide dynamic range.
Rohde & Schwarz GmbH & Co. KG, Munich, Germany +4989 4129-1765.
Circle No. 279
4 GHz real-time Oscilloscope
The TDS7000 series 4 GHz real-time digital phosphor oscilloscope addresses the critical measurement needs of engineers who design next- generation global communications and Internet products. Based on a new, open Windows" platform, the series combines exceptional performance with operational simplicity. It has an up to 20 gigasamples per second real-time sample rate and record length to 32 MB and up to 4 GHz bandwidth. The TDS7000 series also features an easy-to-use user interface with a large 10.4" touch-sensitive display. Price: $18,000 to $60,000. Delivery: four weeks.
Tektronix Inc., Beaverton, OR (503) 627-5150.
Circle No. 280
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