The WMDCXX-0.13-0.52-N series from Werbel Microwave are directional couplers that operate from 130 to 520 MHz. They have a coupling range of 3 - 30 dB, directivity of over 20 dB and an insertion loss of under 4 dB. These devices can handle up to 150 watts of power and have a VSWR of 1.25:1. They are available in a module with N or SMA female connectors and are ideal for low-PIM by material selection and prototype testing applications.
