COMPONENTS
Surface-mount Balun
This miniaturized version of the company's 2.4 GHz Xinger-brand surface-mount balun has an insertion loss of 0.35 dB (max), making it an ideal companion for 802.11b and 802.11g access point and embedded WLAN chipsets. Other advantages include optimization for impedance matching and guaranteed phase and amplitude performance.
Anaren Microwave Inc.,
East Syracuse, NY (315) 432-8909.
Circle No. 216
DPDT Switch
The model HMC436MS8G low insertion loss, +3 V double-pole double throw (DPDT) switch is designed for 802.11a/HiperLAN WLAN and UNII point-to-point/multi-point 5.1 to 5.9 GHz applications. It is an integrated antenna diversity and transmit/receive switch that provides 1 dB insertion loss while handling up to +30 dBm RF input power from 0/+3 V DC control inputs. Port-to-port isolation is over 20 dB with better than 20 dB return loss on any port. Packaged in a low profile, 1 mm high 8 lead MSOP surface-mount package, the switch is ideally suited for 802.11a and access point front-end switching.
Hittite Microwave Corp.,
Chelmsford, MA (978) 250-3343.
Circle No. 218
Single Layer Capacitors
The Maxi-Plus Series of single layer capacitors exhibits a dielectric constant of 30,000. They feature X7R temperature characteristics and are ideal for decoupling around electro-optical amplifiers and trans-impedance amplifiers. The series is also designed to operate in the millimeter bands with an ultra low equivalent series resistance specifically for the RF/microwave, optical and cellular market. Exhibiting a very high or non-definable self-resonant frequency, these capacitors feature ultra-wide band capabilities. The high dielectric constant featured in the Maxi-Plus Series allows for a compact package that is 60 percent smaller than previously offered packages. The series features capacitance values from 100 to 10,000 pF. Typical measurement coefficient for these capacitors is ±15 percent over the operating temperature range from -55° to +125°C. Rated from 50 V, the series is offered in length and width size ranges from 0.010" to 0.100" with custom sizes available.
AVX Corp.,
Myrtle Beach, SC (843) 946-0414.
Circle No. 217
TETRA Hybrid Combiners
The model WSC2-00015 and WSC4-00014 TETRA band high power transmit hybrid com- biners allow either two carriers to be combined onto a single transmission line with the WSC2-00015 or four carriers with the WSC4-00014. With an operating frequency band of 380 to 430 MHz, these combiners offer low insertion loss of 3.7 dB (max) (WSC2-00015) and 7.2 dB (max) (WSC4-00014) and high transmit input to input isolation of 40 dB (min) for the WSC2-00015 and 60 dB (min) for the WSC4-00014. Minimum power handling is specified as 25 W CW TETRA carriers per input for either 2:1 or 4:1 models. Passband return loss is specified at 15 dB (min) at all ports. Operating temperature range is -30° to +50°C.
K&L Microwave Inc.,
Salisbury, MD (410) 749-2424.
Circle No. 219
Capacitive Feedthrus
These feedthrus are designed for eliminating noise and frequency interference in discoidal capacitance filtering applications such as in modulators, switches, amplifiers, filters, multi-function assemblies and other active devices. Utilizing premium glass and proprietary soldering techniques, the series of single pin design styles can be custom manufactured for unique applications up to 300°C. These hermetic capacitive feedthrus are designed to meet or exceed MIL-F-28861 by providing a guaranteed hermeticity of 1 x E-8 cc/sec at 1 atm or better. Capacitance values range from 5 to 27,000 pF with tolerances as tight as ±10 percent. They are ideal for designers seeking ultra-pure DC signals at higher frequencies. They eliminate the need for externally mounted capacitor chips, freeing board and/or package space.
Thunderline-Z,
Hampstead, NH (603) 329-4050.
Circle No. 225
Mixer
The model M2-0243 mixer covers 2 to 43 GHz with a 400 MHz to 43 GHz IF. Designed for fiber-optic clock-recover/acquisition applications requiring an ultra-broadband IF, the unit is a unique triple-balanced mixer design, available in 2.92 mm connectorized outline. Local oscillator drive levels are +12 to +15 dBm. Typical conversion loss is 10 to 20 dB.
Marki Microwave Inc.,
Morgan Hill, CA (408) 778-4200.
Circle No. 221
Semi-rigid Cable Connectors
These 2.8 mm male and female connectors are designed for RG-405 (0.085) semi-rigid cable. Available in both direct solder or solder clamp attachment, these designs exhibit low SWR and perform to 40 GHz. Other 2.9 mm connectors are available for 0.085 low loss, 0.118 and 0.141 diameter semi-rigid cable. The connectors feature a DC to 40 GHz frequency range and SWR of 1.25 (max), and are air dielectric and mechanically compatible with SMA and 3.5 mm connector series.
S.G. McGeary Co.,
Rockledge, FL (321) 636-0909.
Circle No. 223
BMA Connectors
The BMA Series connectors feature a high integrity push-on SMA interface that is suitable for dense modular connector arrays requiring fast and reliable connections. This line of high frequency BMA connectors has been expanded to fit many types of cables including semi-rigid sizes from 0.0865" to 0.1410" and flexible cables from 0.190" to .240" with crimp and solder attachment. The connectors accommodate a maximum of 0.60" (0.120" custom) axial- and ±0.020" radial misalignment. Designed for DC to 22 GHz applications, these 50 Ω connectors have a 1000 Vrms dielectric withstanding voltage and 5000 megohms insulation resistance. Price: from $12.45 each.
TRU Corp.,
Peabody, MA (800) 262-9878.
Circle No. 226
AMPLIFIERS
Power Thin Film Amplifier
The model AML618P3301 low noise, 1 W wide band amplifier operates in the 6 to 18 GHz frequency range and provides 33 dB (min) gain with an output power at 1 dB gain compression of +30 dBm (min). Noise figure is below 3 dB across the entire bandwidth. Input and output SWR is 1.8 nominal. Operating at +15 V DC this amplifier draws 1050 mA (typ) current. Internal DC regulator, reverse voltage protection and field removable SMA (f) connector shells are standard. Modules are also available as carrier mounted substrates. Size: 2.00" x 0.75". Delivery: 10 days (ARO).
AML Communications Inc.,
Camarillo, CA (805) 388-1345.
Circle No. 227
Low Noise Amplifier
The model NLC00361 low noise power amplifier is designed for mobile communications systems operating from 1920 to 1990 GHz. The gain at room temperature is 25 dB with noise figure over operating temperature range of 1.2 dB (max). The output third order intercept point at 10 dBm output power/tone at room temperature is 35 dBm (min). 1 dB compression point at room temperature is 18 dBm (typ).
Nextec Microwave & RF Inc.,
Santa Clara, CA (408) 727-1189.
Circle No. 229
Broadband Laboratory Amplifier
The model TPT5001200-6 broadband laboratory amplifier is a linear, class A lab unit covering 500 to 1200 MHz, producing a typical power of 38 dBm at 1 dB compression with 25 dB of gain. The 6 W amplifier offers typical IP3 of 48 dBm, input and output SWR < 2 and prime power of 110 V AC. Size: 6.00" x 5.50" x 3.25".
Transistor Power Technology Inc.,
Huntington, NY (631) 491-0265.
Circle No. 231
ANTENNAS
Broadband Dual Linear Antenna
This broadband dual linear antenna was designed for polarization diverse applications. High power handling and good isolation help with power on target and good polarization purity. The antenna is capable of functioning in airborne environments without degradation. It features SWR of 2.5 (max), port-to-port isolation of 25 dB (min) and operates over the 6 to 18 GHz frequency range.
Nurad Technologies Inc., a division of Chelton Microwave,
Baltimore, MD (410) 542-1700.
Circle No. 233
INTEGRATED CIRCUIT
Quadrature Modulator
The model AD8349 I/Q quadrature modulator is designed to enable a single-stage upconver- sion for wire- less infrastructure equipment. The device covers the 800 MHz to 2.7 GHz band, allowing designers to specify the AD8349, and to standardize on it across multiple operating bands and cellular standards. It is designed to ease direct upconversion for CDMA, WCDMA, GSM EDGE and TDMA transmitters. A direct upconversion architecture significantly reduces the cost compared to traditional multistage IF approach. The noise floor is specified at -156 dBm/Hz and the P1dB output compression point is specified at +5 dBm, thereby allowing the user to attain a higher output for a given adjacent channel power. With improved quadrature accuracy of 0.2 dB and phase balance of 0.5°, this component achieves a sideband rejection of -42 dBc. Price: $4.50 (10,000).
Analog Devices Inc.,
Norwood, MA (800) 262-5643.
Circle No. 234
MATERIALS
High Reliability, FR-4 Epoxy Material
The N4000-11 series of laminate and prepreg materials are being introduced to provide printed circuit board fabricators with a next-generation, high Tg FR-4 product that is designed to meet the difficult performance specifications currently being proposed by a variety of multinational OEMs. The N4000-11 is designed to provide a conductive anodic filament resistant, dimensionally stable material with superior thermal performance. With a Tg of 175°C, these materials are designed for use in a broad range of printed circuit board applications requiring very low Z-axis expansion, outstanding thermal stability and superior hole-wall integrity. The material also features improved process latitude when compared to similar high Tg dielectric materials currently under investigation for their thermal superiority. This material set is recommended for high density designs in the network storage, telecommunications infrastructure, enterprise server, and Internet connectivity segments.
Park Electrochemical Corp.,
Lake Success, NY (516) 354-4100.
Circle No. 235
Copper-manganese-nickel Alloy
Wieland-LV7 is a copper-manganese-nickel alloy with an almost silvery color. Its chemical composition is Ni 20 percent, Mn 20 percent and Cu balance. The material has a good corrosion resistance (comparable to lead-free nickel-silvers) and excellent formability, joining (brazing, soldering) and plating characteristics. High strength and outstanding spring properties are achieved by special heat treatment. Stress relaxation at 150°C is less than 20 percent. It is also cost-effective, and ideal for special electrical applications such as high frequency connectors.
Wieland Werke AG,
Ulm, Germany +49 (0) 741 9440.
Circle No. 236
SERVICE
Aluminum Nitride Clean Via Technology
This newly developed process renders laser drilled vias in aluminum nitride (AlN) slag- free. Clean Via Technology (CVT™) creates a perfectly clean AlN grain structure on laser drilled via walls. Exposing this virgin grain structure provides strong mechanical footholds as well as a chemically active surface for chemical bonds. This proprietary process makes it possible for both thick and thin film circuit manufacturers to use laser drilled AlN with a degree of success previously not possible.
P/M Industries,
Portland, OR (800) 462-0439.
Circle No. 237
SOFTWARE
Simulation Software
Version 1.1 of APLAC Simulation Builder (ASB) is designed for the Mentor Graphics design frameworks. It enables seamless cooperation of the APLAC Simulator and Mentor Graphics Design Architect, RF Architect and PowerLogic. ASB connects directly to frameworks schematic database, and reads out netlist information that can be completely tailored to create a specific netlist. The software features multiple mapping library support, better mapping error reporting, support for measurement templates and an online help system. With its foundation on proven PCB design systems, ASB eliminates additional interfaces, database conversion and error prone manual re-design of RF blocks.
APLAC Solutions Corp.,
Helsinki, Finland +358-9-54045000.
Circle No. 238
SOURCES
OCXO
The model FTS501AH oven compensated crystal oscillator (OCXO) meets stratum level accuracy requirements for telecommunications ap- plications, making it ideal for use in base stations, telecom switching, GPS and LAN/WAN applications as well as in test and satellite equipment. It offers a frequency stability of ±250 ppb over the 0° to 70°C temperature range and an overall accuracy of ±4.6 ppm for all conditions over 10 years. The frequency range of the new OCXO is 10 to 40 MHz. Supply voltage is 5.0 V, with 3.3 V available, and control voltage is 0.5 to 5.0 V. Storage tmperature range is -40° to +85°C. Price: $68 (1000). Delivery: eight weeks (ARO).
Fox Electronics,
Fort Myers, FL (888) 438-2369.
Circle No. 240
TCXO
The VC-TCXO HFX series temperature-compensated crystal oscillator (TCXO) is designed to increase performance for GSM and CDMA prod- ucts. The small size, coupled with several new features, enables engineers to produce high performance compact designs for GSM and CDMA products, such as mobile phones and handheld devices. The series also employs analog transistors to reduce phase noise, which improves effective data rates on handsets. The frequency in production has also been trimmed, yielding high accuracy rates. Additional benefits include low current consumptions and a built-in DC blocking capacitor. The series also features measurement technology that guarantees more temperature points for greater frequency stability. Size: 3.2 x 2.5 x 1.2 mm.
Murata Electronics,
Smyrna, GA (770) 436-1300.
Circle No. 242
S-band VCO
The model V844ME02 S-band VCO is designed for the point-to-point radio market. This device covers from 3430 to 3610 MHz within 0.5 to 4.5 V DC of control voltage while covering 180 MHz bandwidth with an average tuning sensitivity of 87 MHz/V. The VCO also realizes spectral purity of -88 dBc/Hz (typ) at 10 kHz from the carrier. It will strengthen any phase-locked loop (PLL) with its 1.1:1 linearity over frequency and temperature and suppresses the second harmonic to better than -15 dBc. The V844ME02 draws 18 mA off a 5 V DC supply and furnishes the end user with 2.25±1.25 dBm of output power into a 50 <img id="_x0000_i1027" src="/Article_Images/W.jpg" /> load and is guaranteed to operate over the extended commercial temperature range of -40° to +85°C. It is further heightened by pushing less than 1 MHz within 5 percent of the nominal supply voltage and pulls less than 8 MHz with a 14 dB return loss, any phase. Size: 0.50" x 0.50" x 0.13". Price: $15.95 each.
Z-Communications,
San Diego, CA (858) 621-2700.
Circle No. 244
Phase-locked Oscillator
This 20 GHz phase-locked oscillator locks to a 5 MHz reference input in a single loop. Its low power consumption, along with its compact size, sturdy structure and low phase noise offer an attractive solution for various defense applications. The unit offers 20 GHz output frequency, +12 dBm (min) output power, an operating temperature range from -45° to +75°C, +12 to +24 V DC, < 400 mA power consumption and < -120 dBc phase noise at 100 kHz offset. Size: 2.25" x 2.25" x 0.62".
Elcom Technologies Inc.,
Rockleigh, NJ (201) 767-8030.
Circle No. 239
SUBSYSTEMS
Solid-state Power Supply
The PowerMod™ high voltage, solid-state power supply combines reliable switching technology at high voltage and high power in a rack-mount unit for use in manufacturing and laboratory applications. It features up to 200 kHz switching speeds with < 1 percent voltage regulation, < 1 percent ripple and maintains regulation when the load is changing. Capable of operating in constant voltage mode, constant current mode, or constant power mode, this switching power supply is offered in 30 and 40 kW 19" units. Providing full over-voltage and over-current protection and high immunity for operation near pulse discharges, the PowerMod supports demanding applications such as magnet control, ion implantation, magnetron heating, lasers, electron beams and RF transmitters. Price: $36,000 (30 kW) and $50,000 (40 kW).
Diversified Technologies Inc.,
Bedford, MA (781) 275-9444.
Circle No. 245
Low Profile Power Supply
This new series of the company's PowerBank family of low profile power supplies adds power-factor correction capability. From inputs of 115/230 V AC, it provides up to six configurable main outputs and two low power auxiliary outputs. Designated PowerBank PB15056PFC, output power is 1200 W at 110 V AC and 1500 W at 220 V AC. This unit is designed with 19" rack applications in mind, but it can also be used as a stand-alone box. Many mounting options make it suitable for a variety of applications. Internal fans provide cooling. Size: 16.84" x 12.60" x 1.75". Price: $1.42/W (100). Delivery: one to eight weeks.
Northwest Power Integrations (NPI), a Vicor Integrations Architect,
Milwaukie, OR (503) 652-6161.
Circle No. 247