Patent ID: 7046959

Claim:
A receiver operable at microwave frequencies comprising: a substrate; a waveguide-to-microstrip transition formed on the substrate for receiving microwave radio frequency (RF) signals; surface mounted receiver components and interconnecting microstrip formed on the substrate that receive the RF signals from the waveguide-to-microstrip transition and convert the signal to an intermediate frequency (IF) for further processing, and comprising a mixer circuit that receives a local oscillator (LO) signal and RF signal to produce the IF signal; a diplexer circuit and a temperature compensated attenuator circuit that receive the IF signal from the mixer and attenuates the IF signal to provide high signal linearity and high order modulation, wherein the diplexer circuit receives the IF signal from the mixer circuit and passes the signal to the temperature compensated attenuator circuit; a controller and temperature compensation circuit operatively connected to the temperature compensated attenuator circuit for temperature compensating any attenuation to the IF signal; and a receive signal strength indicator (RSSI) circuit that couples a portion of the IF signal after the diplexer and temperature compensated attenuator circuit and operatively connected to the controller and in feedback to the mixer circuit for allowing the controller to adjust circuit operation and ensure high signal linearity and high order modulation.