Fairview
Microwave has released 28 waveguide relay switches, which serve frequencies
ranging from 5.85 GHz to 40 GHz, encompassing C, X, Ku, K, and Ka frequency
bands. They are targeted at applications such as VSAT, SATCOM, radar, microwave
radio, electronic warfare, electronic countermeasures, space systems, and test and
measurement instrumentation.

These
broadband waveguide switches are configured for single-pole double-throw (SPDT)
operation with latching actuators, self-cut-off, TTL logic, and position
indicators with manual override. And a shorting plate can be removed for
optional double-pole double-throw (DPDT) operation.

0418_Roundup_Fairview_Relay

All
28 electromechanical switches incorporate a patented motor drive with arc suppression
and include an environmentally sealed, quick-connect DC control connector and
mate. Moreover, they boast a compact package design with integrated waveguide
ports featuring grooved flanges and O-rings for pressurized operation.

According
to Tim Galla, product manager at Fairview Microwave, “These waveguide relay
switches are targeted for designs that route either low- or high-power signals
for applications that may involve microwave communications, broadcasting, and
radar.”

The
new electromechanical relay switches are available in a broad selection of
waveguide sizes: WR137, WR112, WR90, WR75, WR62, WR42, and WR28. They operate
in temperatures ranging from –40°C to 85°C, are rated for 250K lifecycles
minimum, and packages are fully weatherized for exposure of up to 100%
humidity.

These broadband waveguide switches offer high
isolation levels of up to 105 dB and extremely low insertion loss down to 0.01
dB. And they are specified with operating voltages of either +12 Vdc or +28 Vdc
and power-handling capability of up to 12 kW CW and 320 kW peak.