Quantic PMI Model No. TD-30T-218-FC-HS-ROHS is a high-speed threshold detector designed to operate over the 2.0 to 18.0 GHz frequency range. It has an external adjustment to vary the threshold level from -10 to -20 dBm, with an input flatness of typically ±1.0 dB and VSWR of less than 3.0:1. This unit comes in a small compact size with field removable SMA connectors for surface mounting or typical coaxial connection and is ROHS compliant.  https://www.quanticpmi.com/product-details/td-30t-218-fc-hs-rohs