Key Specifications. Flange Type UG Cover Flange Flange Group Standard Minimum Frequency 33 GHz Maximum Frequency 50 GHz Maximum VSWR 1.5:1 Maximum Insertion Loss 0.4 dB Coupling 30 dB. WR-22 Waveguide 30 dB Broadwall Coupler, UG Cover Flange,2.4mm Female Coupled Port, 33 GHz to 50 GHz, Copper. The PEW22CP005-30 is a WR-22 Directional Broadwall waveguide coupler with 2.4mm female coupled port that operates inthe frequency range of 33 to 50 GHz. This Waveguide component has a maximum VSWR of 1.5:1. These designs are madeof copper alloy and incorporate a broad wall configuration that result in a mid-band nominal coupling value of 10, 20, 30, 40or 50 dB. Common applications for this component would be where power measurements are required within a system formeasuring/sampling power or frequency monitoring with minimal signal loss to the main transmission line. Pasternack offersa complete family of waveguide Crossguide and Broadwall couplers that are in-stock and ship same day.