- Buyers Guide
Military Microwaves Supplement
Recent Advances in Radar Technology
Using Calibration to Optimize Performance in Crucial Measurements
14 to 18 GHz Bandpass Filter
Model A65-MH004 is a 14 to 18 GHz bandpass filter. This filter has a 1 dB maximum insertion loss, 2:1 maximum VSWR, 10 W maximum operating power, and a stop band of -70 dB minimum from 0 to 11,900 MHz and 21 to 25 GHz.
San Jose, CA
RS No. 235
ET Industries announced its newest product line, power dividers to 65 GHz. The model D-1865-2 is a two-way power divider and model D-1865-4 is a four-way power divider that spans the frequency range from 18 to 65 GHz. Amplitude and phase imbalance are ±1.0 dB and ±12° maximum. Isolation is 20 dB minimum. VSWR is less than 2.0:1. The maximum insertion loss is 3.5 dB for the two-way and 6.0 dB for the four-way. Connectors are “V” 1.85 mm females. Eight-way and sixteen-way power dividers to 65 GHz are also available.
Electromagnetic Technologies Industries Inc.
RS No. 236
Pseudo Elliptic Bandpass Filter
KR Electronics introduces part number 2910, a surface-mount 875 MHz pseudo elliptic bandpass filter. The filter has a typical insertion loss of 3.5 dB and minimum 3 dB bandwidth of 42 MHz. The filter attains over 50 dB rejection by 831 and 920 MHz. The use of elliptic bandpass at bandwidths as low as 5 percent allows superior performance to all-pole designs in a smaller package. The filter is supplied in a surface-mount package measuring 2.0" × 0.5" × 0.3" and can also be supplied connectorized. The filter can be customized for other center frequencies and bandwidths.
KR Electronics Inc.
RS No. 237
77 GHz Economic Sensor
Model SRF-77120910-01 is a low cost 77 GHz sensor designed for Doppler speed measurement. It is constructed with a high performance circular horn antenna, a linear to circular polarizer and T/R diplexer. It also incorporates a balanced mixer and a high performance Gunn oscillator. The sensor features a 12 degree 3 dB beam width, 10 dBm output power and 9 dB conversion loss. The sensor can readily be modified to offer different beam widths, dual channel (I-Q) output or FMCW versions.
RS No. 216
Quick-release Waveguide Couplings
Manufactured from Alochromed aluminum with stainless-steel threaded inserts and screws, the QRF series of couplings attach to the rear of waveguide flanges. The self-aligning couplings are equipped with dowels to ensure precise positioning, while the use of spring-loaded screws prevents parts from being lost. The screws are designed to be finger tightened and also incorporate hex bolts to allow the use of a torque wrench. Available in different versions to suit all popular waveguide sizes, the QRF series is designed for rapid installation and is suitable for maintenance personnel in the defense, broadcast and telecommunications sectors.
Link Microtek Ltd.
Basingstoke, Hampshire, UK
+44 (0) 1256 355771
RS No. 217
Miniature Lumped Element Low Pass Filter
Model 3LP8-100-S is a miniature lumped element low pass filter. The unit exhibits a 3 dB cut-off frequency of 100 MHz with an insertion loss of 0.6 dB from 500 kHz to 90 MHz. VSWR is 1.5:1 typical and is 1.25" × 5" × 0.4".
RS No. 218
These feed-thru terminations are designed to provide high impedance devices such as an oscilloscope with a characteristic 50 Ohm impedance. MECA’s family of RoHS compliant feed-thru terminations operate between 300 to 1000 MHz and are available off-the-shelf in N, SMA, BNC and TNC connector configurations. Units are rated at 2 W average (500 W peak). These feed-thru terminations are made in the USA and offer a 36-month warranty.
MECA Electronics Inc.
RS No. 219
MITEQ introduces its new frequency doubler, model MAX2M0714N01U, which produces an output of +23 dBm from 13,500 to 14,500 MHz with an input harmonic rejection of –20 dBc typical. This doubler requires an input power of 10 dBm typical, +15 V DC at 350 mA and –15 V DC at 10 mA. It is supplied with type “K” female connectors. The MAX2M0714N01U measures 0.90" × 0.69" × 0.23" without connectors.
RS No. 220
High Frequency Miniature Cavity Filters
NIC introduces its miniature size cavity filters designed for use in airborne, ship or ground applications. These filters can be custom designed for any center frequencies varying from 3 to 18 GHz, and 3 dB bandwidths from 5 to 30 percent. Features include: hermetically-sealed package; low insertion loss, high selectivity and wide bandwidth; Gull wing surface-mount RF pins or field replaceable SMA connectors; up to 80 percent reduction in weight and volume compared to standard combline filters; and good ultimate rejection.
Networks International Corp.
Overland Park, KS
RS No. 238
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