Pasternack has expanded its line of waveguide products with new directional crossguide couplers that cover the waveguide bands from 5.85 to 33 GHz: WR34, WR42, WR51, WR62, WR75, WR90, WR112 and WR137. The couplers are available in one of three configurations: 1) crossguide coupler with four waveguide ports, 2) crossguide coupler with three waveguide ports and a termination and 3) crossguide coupler with two waveguide ports, a termination and a waveguide-to-coax adapter. The waveguide-to-coax adapters can have SMA, N-type or 2.92 mm coaxial connectors.
The crossguide couplers have VSWR as low as 1.05:1 and directivity as high as 45 dB. Typical insertion loss is 0.1 dB, for minimal system loss in monitoring applications. The couplers are made with bronze or copper-alloy waveguide bodies and EIA- (CPR) or UG-style flanges, per military standards. The flanges incorporate a cross wall configuration, offering nominal mid-band coupling values of 20, 30, 40 or 50 dB. All of the crossguide couplers come preassembled with the terminations and/or waveguide-to-coax adapters. Pasternack’s product line includes a selection of 160 crossguide couplers in stock and ready for same-day shipping.
These couplers serve product development and characterization applications for instrumentation and test benches. A common application is measuring power to monitor power levels with minimal signal loss to the main transmission line.