- Buyers Guide
Ceramic Filter/Decoupling Capacitor
This ceramic filter/decoupling capacitor utilizes revolutionary X2Y® technology. The design incorporates common shielding electrodes that form a Faraday Cage around the standard capacitor.
The addition of the common electrode creates two matched or balanced capacitors enabling simultaneous line-to-line and line-to-ground filtering. The matched capacitor design also eliminates temperature, voltage and aging differences. This component virtually eliminates parasitic inductance and provides superior filter and decoupling performance, allowing multiple component replacement and space savings on the PC board. The capacitor is available in chip sizes 0603 through 1812 and 1410. Price: 50¢ (1000). Delivery: stock to eight weeks.
Johanson Dielectrics Inc., Sylmar, CA (818) 364-9800. Circle No. 218
WLAN Surface-mount Dielectric Resonator Filter
The model 3DL25-4950/X100 dielectric resonator filter is a three-pole bandpass Cheby- chev design used for WLAN applications. The unit's low profile, small size, low loss and surface-mount capability makes it suitable for this commercial appliction. The filter has a low loss passband from 4900 to 5000 MHz, 2.0 SWR and 20 dB (min) rejection at 5250 to 5350 MHz. Dielectric resonator design provides for stable performance in the operating temperature range of -40° to +85°C. Size: 0.55" x 0.55" x 0.20".
K&L Microwave Inc., Salisbury, MD (410) 749-2424. Circle No. 219
The model M9-0950 mixer is a design unique to the company, covering 9 to 50 GHz on the RF and LO, with a 1 to 22 GHz IF. Created for wideband applications requiring a very high IF, it is a unique double-balanced mixer design, available in a 2.92 mm connectorized outline. The local oscillator drive level is 9 to 13 dBm. Typical conversion loss is 10 dB.
Marki Microwave Inc., Morgan Hill, CA (408) 778-4200. Circle No. 221
This miniature RF relay embodies new technology to provide low loss and high integrity switching of RF signals up to 2.5 GHz and 10 W. The relay is ideal for redundancy, filter and amplifier switching in mobile phone base station, wireless LAN, private mobile radio and associated test and measurement equipment. Engineered to minimize insertion loss and SWR, the relay offers good RF performance wherever high frequency isolation, termination and signal routing is required. The relay achieves HF characteristics of 60 dB isolation (min), and insertion loss of 0.2 dB (max) at 2.5 GHz (50 ). Size: 20.0 x 9.4 x 8.9 mm.
Omron Corp., London, UK +44 (0) 20 8450 4646. Circle No. 223
This cut and fit solder connector is designed for annularly corrugated cables (7/8", 1-1/4", 1-5/8") and provides a simple and speedy soldered connection, resulting in a reduction of connector-sourced intermodulation harmonics. The connector kit comprises a helical screw threaded inner conductor, a push-on slotted outer conductor assembly and a heatshrink sleeve. No solder or flux is required as the outer and inner parts of the connector are pre-loaded with enough solder in the optimal location to ensure an ideal electrical connection. The only additional tool required is a gas torch or an electrical heat gun.
Spinner GmbH, Munich, Germany +49 89 12601-0. Circle No. 225
This helical filter has an input power of 2 to 4 W and is designed for D-amps, E-GSM, JCDMA, PDC, IMT2000 and PDC1.5 repeater systems. Suitable for all wireless systems and with good functionality, this filter exhibits a group delay variation of less than 20 ns.
Temwell Corp., Taipei, Taiwan 886-2-25652287. Circle No. 228
Star Point Combiner
The star point combiner principle was chosen to implement a suitable filter combiner to achieve low attenuation loss with acceptable mechanical dimensions in combining the uplink and downlink ranges with the receiving and transmitting ranges in a common antenna field. First the receiving and transmitting ranges of each of the two connections are separated in a two-way star point and routed through the filters. Then they are re-combined in a four-way star point and routed to the antenna. The combiner is made up of four temperature-compensated eight-cavity filters. They are combined in a star point network with strip line technology.
Spinner GmbH, Munich, Germany +49 89 12601-0. Circle No. 226
The Bell Pin™ surface-mount feedthru has been developed to work with a lightweight alu- minum or brass housing, easily mounting to the bottom of the package creating true surface mountable parts with increased performance. A SWR rating of less than 1.5 up to 15 GHz and offering true 50 performance, this technique is an ideal solution to costly, heavy Kovar packaging problems. The Bell PIN SMT feedthru is made with a gold-plated Kovar base and center conductor fired in place with low loss corning glass. Advanced modeling techniques were used to achieve a 50 frequency range compared to Kovar SMT housings. Hermetic reliability is exactly that of a round ferrule type feedthru.
Thunderline Z, Hampstead, NH (603) 329-4050. Circle No. 230
High Density Shielding Interconnects
These HDSI® assemblies are ideal for high speed digital or analog signal transmission in high end servers, telecommunication switches/ routers and automatic test equipment. The low profile, high density assemblies offer optimal signal integrity, achieved through matched impedance, closely controlled line-to-line skew, reduced EMI and low crosstalk. Flexible and low profile, the interconnect solutions are ribbonized for easy routing in tight spaces and board-to-board applications.
Tensolite, St. Augustine, FL (877) 890-7483. Circle No. 229
This line of miniature, high reliability chip resistors ranges in size from 0202 to 0705 with tolerances from 0.1 percent, power ratings from 20 to 200 mW, temperature coefficients of resistance as low as 25 ppm and voltage ratings from 15 to 50 V. The operating range for the resistors is from -55° to +125°C. A full range of termination styles and termination finishes are available. Reliability is assured by extensive in-house testing. The resistors are designed for use in a wide range of high reliability applications, including medical electronics, defense systems, microwave communications, aerospace electronics and satellite systems.
State of the Art Inc., State College, PA (814) 458-3401. Circle No. 227
The model HR-20T DC block features a loss of less than 0.8 dB over the 700 to 2700 MHz cellular, PCS and UMTS frequency bands. It is used to prevent the flow of direct current and low frequency current surges along the inner conductor of a transmission line, while permitting the unimpeded flow of RF signals. The distributed series coupling capacitor gives the HR-20T a power capability of 250 W average, with a peak voltage rating of 2 kV. Applications include the DC isolation of wireless signal paths and to limit current surges at antenna sites that may occur during lightning storms. Special attention has been directed to maximize DC isolation and minimize passive intermodulation. Weight: 0.9 oz.
Microlab/FXR, Livingston, NJ (973) 992-7700. Circle No. 222
The model NA00270 one-watt power amplifier for IMT-2000 operates from 2110 to 2170 GHz. It is a single bias (+12 V) medium power amplifier optimized for CDMA signals with 1 W average CDMA output power. It offers forward power detection and on/off control input signal ports, has a P1dB of 35 dBm and output third-order intercept of 51 dBm, with a gain of 30 dB.
Nextec Microwave & RF Inc., Santa Clara, CA (408) 727-1189. Circle No. 234
The model AML0016P2001 low noise highly linear wideband amplifier operates in the fre- quency range of 10 MHz to 6 GHz and delivers low orders of distortion with an IP3 of 36 dBm (typ). Gain is 21 dB (min) and the amplifier gives +23 dBm (min) output power at 1 dB gain compression and a noise figure below 3.2 dB from 200 MHz and above. Input and output SWR is 2.1. Operating at 15 V DC, this amplifier draws a nominal current of 480 mA. Internal DC regulator, reverse voltage protection and field removable SM connector shells are standard. Size: 1.54" x 0.75".
AML Communications Inc., Camarillo, CA (805) 388-1345. Circle No. 231
HBT Power Amplifier
The model HMC408LP3 GaAs InGaP heterojunction bipolar transistor (HBT) MMIC power amplifier operates from 5.1 to 5.9 GHz with +30 dBm P1dB output power and +43 dBm output IP3. It is ideal for low cost UNII point-to-point/multi-point and 902.11a/HiperLAN WLAN access point applications. The power amplifier provides 20 dB of gain and +32.5 dBm of saturated power at 27 percent PAE from a single 5 V supply. A power down input provides RF output power and DC current control. The input of the amplifier is internally matched to 50 W and requires minimal external output matching components. Size: 3 x 3 mm.
Hittite Microwave Corp., Chelmsford, MA (978) 250-3343. Circle No. 233
Intermediate Power Amplifiers
The model ECP052, ECP053, ECP103 and ECP203 RF MMICs are built with a highly reliable InGaP/GaAs HBT process. The 053, 103 and 203 are operable from 2100 to 2700 MHz, making them ideal for 802.11b and other applications at 2.4 GHz, while the ECP052 operates over the 800 to 1000 MHz range with a P1dB of 27 dBm, gain of 15 dB and OIP3 of 45 dBm. The ECP053 features a P1dB of 28 dBm, 17 dB of gain and the same OIP3 of 45 dBm. The ECP103 offers a P1dB of 31 dBm, gain of 12 dB and OIP3 of 47 dBm, while the ECP203 has a P1dB of 33 dBm, 11 dB of gain and an OIP3 of 49 dBm.
EiC Corp., Fremont, CA (510) 979-8938. Circle No. 236
HCI-level Bluetooth Module
This full host controller interface (HCI) level Bluetooth module, Blue Module,™ integrates both active devices and passive components to create complete circuits in one chip, making it both a carrier of the IC and a functional device. The module, which has achieved logo certification for Bluetooth standard version 1.1, is ideal for wireless applications such as cell phones, laptop and desktop computers, headsets, telematics and personal digital assistants as well as advanced products including wireless printers, mouses and keyboards. The Blue Module enables engineers to bypass the process of designing and laying out additional RF circuits and is compatible with other Bluetooth enabled devices, allowing for greater connectivity.
Murata Electronics North America Inc., Smyrna, GA (770) 436-1300. Circle No. 238
Single-chip Direct Conversion Transceiver
The model CX74063 single-chip direct conversion transceiver simplifies the design of multi-band GSM handsets. The transceiver supports general packet radio service and enhanced data rates for global evolution standards and provides a well-defined roadmap to dual-mode, WCDMA/GSM UMTS handsets. These handsets will support advanced applications such as multimedia and high speed Web browsing. The device's advanced architecture reduces the number of external components required to build a mobile handset by more than one-third, significantly reducing the size, cost and power requirements of next-generation GSM handsets. The device integrates all of the circuitry associated with generating a 13 or 26 MHz system reference frequency, with the exception of the crystal. Size: 8 x 8 mm. Price: $5.50 (10,000).
Skyworks Solutions Inc., Woburn, MA (978) 241-7000. Circle No. 239
The BISCO® EC-2000 series electrically conductive EMI/RFI shielding material is available in wide, continuous rolls. These products have excellent compression-set resistance, high shielding effectiveness and easy processing to increase yields. The nickel-graphite-tilled EC-2000 series silicones offer high design flexibility because they are softer and more compressible than similar products, meaning that a good mechnical seal can be obtained through compression of the gasket. In addition, these conductive elastomer sheets offer the combined advantages of high shielding performance, good flame resistance characteristics and corrosion resistance. This series of silicones can be easily die cut and delivered, offering additional design versatility and decreased time to market for OEM designers. The series also provides a range of thicknesses from 0.020" to 0.125".
Rogers Corp., Rogers, CT (800) 237-2068. Circle No. 240
High Performance VCO
The model OA2CP12001 voltage controlled oscillator (VCO) operates from 8000 to 12000 MHz and combines an oscillator circuit, volt-age regulator, MMIC amplifier and bandpass filter in a two-stage CougarPak™ housing. The oscillator is designed for fast tuning speed and linear tuning. Typical performance includes post tuning drift of ±3.0 MHz at 1 ms relative to frequency at 1 s, 2:1 tuning linearity over frequency, and suppresses harmonics to better than -20 dBc. The output power is set to 10 dBm (min) over the -54° to +85°C temperature range, this VCO covers the frequency range in 0 to -12 V, and draws 250 mA from a 15 V DC supply. The new line of VCOs is suitable for challenging signal processing applications.
Cougar Components, Sunnyvale, CA (408) 522-3838. Circle No. 242
The model 357 surface-mount voltage controlled crystal oscillator (VCXO) features a frequency signal output that will interface with HCMOS electronic circuitry. It is targeted to support SONET, DSL and cable modem applications where frequency servo is required. The model 357 is presently available in frequencies from 1.5 to 45.0 MHz. The tristate feature enables the output frequency to be electrically switched to enable or disable the frequency source. It also offers an average pull range of ±50 ppm or ±32 ppm to servo the frequency back to its nominal value as the product operates over its temperature range. Operating temperatures from 0° to 70°C and -40 to +85°C are offered.
CTS Corp., Elkhart, IN (630) 924-3726. Circle No. 243
The model MW500-1225 voltage-controlled oscillator (VCO) operates from 90 to 190 MHz and is designed for satellite and other wireless applications. It maintains a low phase noise level of -111 dBc/Hz at 10 kHz, -133 dBc/ Hz at 100 kHz, and harmonic levels below -17 dBc over the 90 to 190 MHz band. The VCO is stable drifting -0.02 MHz/°C, pulling 0.2 MHz peak to peak, and pushing is 0.7 MHz/V. Tuning linearity is better than 1.6:1 across the bandwidth with power output of +3 dBm ±1 dB. Supply is +5 V at 15 mA and tuning voltage range is 0 to 17 V. Modulation bandwidth is 5.3 MHz. Size: 0.50" x 0.50" x 0.15". Price: $21.95 (1 to 10).
Micronetics VCO Products Division, Hudson, NH (603) 579-0900. Circle No. 246
The model V626ME08 voltage-controlled oscillator (VCO) generates frequencies from 2200 to 2700 MHz and covers the entire frequency band within 0.5 to 18.0 VDC of control. The product will further enhance the performance of any phase-locked loop by providing a clean sprectral signal of -96 dBc/Hz (typ) at 10 kHz from the carrier and is guaranteed to operate over the extended commercial temperature range of -40° to +85°C. This VCO typically draws only 22 mA from a 5 V DC supply and offers the end user 7±3 dBm of output power into a 50 load. It pushes less than 5 MHz/V within 5 percent from the nominal supply voltage and pulls less than 15 MHz with a 14 dB return loss, any phase. Size: 0.50" x 0.50" x 0.13". Price: $15.95.
Z-Communications, San Diego, CA (858) 621-2700. Circle No. 248
The model E1966A 1xEV-DO test application provides a bench-top tool for designing access terminals (AT) and helps high volume manufacturers speed production and reduce the risk of returns and recalls. The E1966A improves test times significantly by testing 1xEV-DO ATs at the packet level instead of at the frame level used in cdma2000 receiver testing. At the highest data rate, the 1xEV-DO has up to 16 packets per frame, making packet-error-rate measurements 12 times faster than typical frame-error-rate measurements. The test application also incorporates a new spectrum monitor feature with three independent markers that allow quick and easy visual inspection of relative measurements, which are especially useful for production repair benches, quality assurance testing, and general purpose research and development tasks.
Agilent Technologies, Test and Measurement Organization, Santa Clara, CA (800) 452-4844. Circle No. 250