- Buyers Guide
Military Microwaves Supplement
Recent Advances in Radar Technology
Using Calibration to Optimize Performance in Crucial Measurements
Amplitude and Phased-matched SP4T Switch
The model SWN-1170-4DR-STANDARD options 0418, pulse amplitude modulation, simultaneous sample and hold is an SP4T switch with an amplitude of +/-0.45 dB and phase variation of +/-2.5° between ports from 0.4 to 18 GHz. Insertion loss is < 2.75 dB, SWR is 1.75 and isolation is 75 dB (min). Switching speed is 55 ns delay on and 30 ns delay off. Supply voltages are +5 V at 184 mA and –5 V at 38 mA. (Other supply voltages are available.) The switch weighs 1.5 oz (typ) and measures 1.25" x 1.25" x 0.70".
American Microwave Corp.,
The model YU324 high performance coherent frequency three-way power combiner for cellular and PCS applications operates over the 850 to 900 MHz range. Isolation is 60 dB (min), insertion loss is 0.6 dB (max), SWR is 1.2 (max) and input power handling is 80 W (avg). Other standard features include high power handling, compact size, DC voltage and RF power monitor circuitry, and integrated lowpass filtering for harmonics. The combiner will handle the most demanding site requirements at a very economical price.
Channel Microwave Corp.,
Two-stage Power Hybrids
This two-stage version of the company’s high impedance technology (HIT™) power hybrid line provides power amplification for applications traditionally covered by power transistors. The HIT design incorporates impedance matching, bias circuitry and temperature compensation inside the device package and produces a 50 W drop-in gain block, saving time and space. The first two-stage parts are intended for PCS applications in the 1.9 to 2.0 GHz frequency range with 1 dB compression points of 10 and 25 W. Nominal gain for both parts is 25 dB and both designs exhibit good gain flatness and phase linearity. Compact hybrid construction results in a highly reliable assembly in a space-saving size of 1.1" x 1.1".
Ericsson RF Power Products,
Morgan Hill, CA
4 - 12 GHz Channelizer
The model 14SMX-4.45/10.75-11 channelizer is designed for use in radio spectrometers and operates over the 4 to 12 GHz frequency range. Passbands include four dual channels and six single channels with 13 overlapping crossovers. Insertion loss is 7.5 dB (including the input power divider), rejection/isolation is > 40 dB and SWR is 2. SMA female input/output connectors are included.
ES Microwave LLC,
Aluminum Nitride High Power Termination
The model 82-7172TC aluminum nitride high power termination operates in the DC to 2 GHz frequency range with a nominal impedance of 50 W. Designed for applications where toxic beryllia ceramic substrates cannot be used, these nontoxic terminations are available in sizes and configurations identical to standard BeO terminations. SWR is 1.15 (max), temperature coefficient is < 200 ppm and average power handling is 150 W (–55° to +100°C derated linearly to 0 W at 150°C). Operating temperature range is –55° to +150°C and DC resistance is 50 +/-2 percent.
Florida RF Labs Inc.,
(800) 544-5594 or (561) 286-9300.
MMIC Single-balanced Mixer
The model HMC272MS8 ultra-miniature single-balanced mixer is packaged in an eight-lead plastic surface-mount mini small outline package (MSOP-8) and offers +21 dBm input IP3 and 30 to 40 dB LO/RF isolation. Constructed of GaAs Schottky diodes and a novel planar transformer balun on the chip, the mixer can be used as an up- or downconverter for PCS; wideband CDMA; 2.4 industrial, scientific and medical band; or MMDS applications. The RF port is balanced via the MMIC balun while the LO port is connected directly to the diodes. Electrical performance is guaranteed over the –40° to +85°C temperature range. Size: 3.0 mm x 4.9 mm x 1.0 mm. Price: 69¢ (100,000).
Hittite Microwave Corp.,
Full-band Duplexer Diversity Receive Filter Assembly
The model WSDA-00019 high performance PCS full-band duplexer diversity receive filter assembly consists of one base transceiver station (BTS) full-band duplexer and one full-band BTS Rx diversity receive (Rx2) filter. The duplexer offers a receive passband of 1850 to 1910 MHz and a transmit passband of 1930 to 1990 MHz with receive and transmit insertion losses of 1.0 dB (max) and 0.8 dB (max), respectively. Both the duplexer antenna and Rx2 connectors are 7/16-F DIN type with O-ring seals for moisture resistance. Maximum power handling is rated at 20 W CW and 40 W peak instantaneous power. Operating temperature range is 0° to +50°C. Size: 7.400" x 6.000" x 1.725".
K&L Microwave Inc.,
Single-channel Bandpass Filter
The model 12861 single-channel electronic news gathering bandpass filter has a bandwidth of 8 MHz over the 1990 to 2110 MHz frequency band and provides < 3.5 dB insertion loss at center frequency. (Additional sections for greater out-of-band rejection are available.) Designed for indoor (and able to be modified for outdoor applications), the filter offers > 25 dB rejection at +/-7 MHz from center frequency, providing selectivity to remove undesired interfering frequencies. Connectors are 50 W type N female, but other connectors are available.
Microwave Filter Company Inc. (MFC),
East Syracuse, NY
(800) 448-1666 or (315) 438-4700.
High Power Lowpass Filter
The model S70L-501 extra high power lowpass filter operates at S-band and handles 3 MW (pk) (20 kW (avg)) of power. A high conductivity aluminum alloy material helps to lower the insertion loss, which is typically 0.1 dB. The low loss, high precision machining and high efficiency cooling fins aid in lowering the operating temperature. Temperature rise is less than 70°F above ambient at 20 kW average input power. Frequency range is 2.9 to 3.1 GHz. Input/output ports are WR284, rejection is 60 dB (min) (80 dB (typ)) and SWR is 1.2 (max). The filter’s rugged construction makes it suitable for extreme shipboard environments.
Microwave Engineering Corp. (MEC),
North Andover, MA
Image Reject Mixer
The model JCIR-4MH image reject mixer for cellular applications offers 28 dBc image rejection (typ) in the 500 to 1000 MHz LO frequency range. Other features include low conversion loss of 7.9 dB (typ), IP3 of 20 dBm (typ) at midband and high isolation of 55 dB (LO-RF), 28 dB (LO-IF) and 25 dB (RF-IF) at midband. The surface-mount package is equipped with solder-plated J-leads for good strain relief and solderability. Price: $54.95 (1–9). Delivery: stock.
Broadband Power Dividers
The 3372, 4372, 4152 and 4162 series wireless broadband power dividers carry two-, three-, four-, five-, six-, eight- and 16-way models most suited for wireless systems and test stands. Operating over the 800 to 2500 MHz frequency range, these power dividers deliver good performance at economical prices. Type N or SMA female connectors are included. Custom configurations are available. Delivery: stock.
Narda Microwave-East, a division of L-3 Communications,
1P2T High Power Switch
The model 2016-K223 solid-state 1P2T switch operates over the 6.0 to 18 GHz frequency range. The absorptive, hermetic design has RF power handling capability of 100 W CW (pass only). Insertion loss is 2 dB (max), isolation is 20 dB (min) and SWR is 2 (max) (pass and block). Designed for switching the output of a mini-tube in a military shipboard application, the switch offers phase tracking of +/-5°, a switching speed of 1 ms (max) and a required +/-5 or +28 V bias. Size: 1.78" x 2.00" x 0.60" (excluding TNC connectors).
Robinson Laboratories Inc.,
Mixers and Frequency Doublers
The company’s complete line of double-balanced and triple-balanced mixers and frequency doublers operate in up to 180 percent bandwidths over the 0.5 to 26.5 GHz frequency range. Designed for low conversion loss, the mixers and doublers have good IP3 and spur performance and are available in open carrier, pin-pack, surface-mount, TO-8 and coaxial packages.
Mica Microwave Corp.,
San Jose, CA
The model 0615IED high performance drop-in isolator provides 22 dB isolation with low insertion loss of 0.35 dB and SWR of 1.25 over the 5.8 to 6.5 GHz frequency bandwidth. (Isolators and circulators in other frequency bands are available in a similar package.) The circuit tabs offer good assembly yield during system integration. The isolator can be operated from –40° to +85°C and can be stored at –50° to +125°C. Size: 0.375" x 0.620" x 0.250". Delivery: stock.
Morgan Hill, CA
High Power Drop-in Isolator
The model PCC099A1819 high power drop-in isolator for amplifier output stage protection operates over the 1700 to 1900 MHz frequency range. Designed for a maximum insertion loss of 0.5 dB, the isolator offers 20 dB (min) of isolation and maximum SWR of 1.25. Power supply is 100 W CW and operating temperature range is –20° to +65°C. Size: 0.75" x 0.75" x 0.25".
Narda Microwave-West, a division of L-3 Communications,
925 - 960 MHz Isohybrid
The model 9A2NR low cost isohybrid provides 55 dBm interchannel isolation with a low insertion loss of 3.4 dB, including the loss due to the 3 dB hybrid coupler. From output to input at the 925 to 960 MHz frequency bandwidth, the isohybrid offers 23 dB isolation and can process several hundred watts of power with RF leakage < –50 dBc. SWR match is 1.2 on all ports over the specified frequency bandwidth and operating temperature range is –10° to +85°C. (Other isohybrids at other frequency bandwidths in similar packages are also available.)
Renaissance Electronics Corp.,
High Power Directional Couplers
The models HCHP-12180, -18265 and -26540 high frequency, high power directional couplers operate in the 12 to 18 GHz, 18 to 26.5 GHz and 26.5 to 40 GHz frequency ranges and offer 100, 80 and 60 W, respectively. The couplers are well suited for sampling or injecting signals with a negligible effect on the transmission line and can be easily modified for different coupling responses or frequency ranges. Connectors are SMA up to 26.5 GHz and K-compatible above 26.5. SWR (max) is 1.5 for the -12180 and -18265 models and 1.8 for the -26540 model. Nominal coupling is 20 or 30 dB.
RLC Electronics Inc.,
Mt. Kisco, NY
The model RSA-3010-C2 surface-mount assembly (SMA) right-angle crimp plug connector is designed for high frequency and microwave applications where small size and high performance are required. The connector also features Teflon insulation, a gold-plated contact and a nickel-plated, machined brass body. The RSA-3010-C2 is also designed for easy assembly and crimp installation using LMR-200“ low loss cable. Other SMA crimp connectors are available for RG-58/U, RG-174/U, RG-142/U, RG-8X, LMR-100,“ LMR-195“ and LMR-240“ cables.
RF Connectors, a division of RF Industries,
San Diego, CA
This single 4 x 4 hybrid matrix for amplifier sectorization in base stations with multiple antennas operates over the 1.8 to 2.0 GHz frequency range and allows a signal applied at any of the four input ports to appear at all four outputs. Isolation is 15 dB (min), insertion loss is 0.5 dB (max), return loss is 18 dB (min) and phase deviation is +/-3° (max). Power handling is 10 W CW. SMB male connectors are standard; variants are available upon request. Size: 2.50" x 2.50" x 0.20".
Sage Laboratories Inc.,
2.25 - 2.75 GHz Phase Comparator
The model FPX-JPM-1074 wideband phase comparator operates over the 2.25 to 2.75 GHz frequency range. Input power is –1 +/-3 dBm, SWR is 2 and RF-to-video conversion loss is < 14 dB at either I or Q output. Quadrature accuracy is +/-3° maximum and I/Q video output power balance is 0.6 dB (max) into a 1.25 SWR. With a video 3 dB bandwidth of 50 MHz (min), the phase comparator is best suited for multifunction test or communications equipment. Price: $950 (5–9).
Signal Technology Corp., Olektron Operation,
The T-Flex 401 replacement coaxial cables accept the same connectors as semirigid cable but are flexible, thereby eliminating the need for pre-bent assemblies (saving considerable engineering expense and simplifying installation). When terminated with 7/16 DIN connectors, passive intermodulation is > –160 dBc. All cables have > –100 dB/ft shielding. Attenuation is similar to solid-copper-jacketed semirigid cables, and high frequency versions are available for operation up to 18 GHz. These coaxial cables have a silver-plated copper inner and outer conductor, polytetrafluoroethylene dielectric and flourethylene propylene jacket for high temperature and/or plenum-rated applications, and are compatible with RG-401 (1/4" semirigid) solder connectors.
Times Microwave Systems,
Flexible Coaxial Cables
The Miniflex 070 series flexible coaxial cables offer the same size and flexibility as RG 178 and the same electrical parameters as 086 semirigid cable (available with SMA, SMB, SMC and GPO type connectors). Price: $5 (1000) for a one-foot assembly with SMA male connectors.
United Microwave Products Inc.,
40 GHz Coaxial Attenuators
The model 84 coaxial attenuators operate over the DC to 40 GHz frequency band and are capable of handling up to 2 W (avg) and 200 W (pk) of power. SWR is 1.50 (max) with a nominal impedance of 50 W, and operating temperature range is –55° to +125°C. Available in 3, 6, 10, 20 and 30 dB versions, the attenuators feature ruggedized 2.4-mm connectors.
(800) 638-2048 or (301) 846-9222.
The model W1200 microwave filter features a narrow bandpass and a miniature cavity filter that provide insertion loss of < 1.2 dB in a 35 MHz bandwidth. The silver-plated microwave filter offers high rejection for the 12.5 GHz terrestrial telephone point-to-point systems. Return loss is > –18 dB at all ports and power capability is > 50 W in both bands. SMA type or WR75-flange connectors are available. Size: 1.20" x 1.20" x 6.00". Price: less than $265. Delivery: stock to six weeks.
Wireless Technologies Corp.,
(877) 420-7983 or (501) 750-1046.
Miniature Surface-mount Isolators
These miniature surface-mount isolators operate in the 1930 to 1990 MHz PCS band. Insertion loss is 0.4 dB (max), 0.3 dB (typ), isolation is 20 dB (min), 22 dB (typ) and SWR is 1.25 (max), 1.18 (typ). Phase flatness is 0.3° peak to peak and insertion phase is 10° window. Intermodulation distortion (two tones) is –65 dBc at +16 dBm per tone and +19 dBm (avg). Operating temperature range is 0 to +85°C. Circulator versions also are available. Size: 0.440" x 0.500" x 0.250". Delivery: two weeks (ARO).
Alcatel Ferrocom Ferrite Products,
San Jose, CA
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