Patent ID: 8693973

Claim:
A mixer circuit, comprising: a LO input configured to receive an input LO signal having a frequency f LO , said LO input signal provided by an first coplanar waveguide; a LO matching network configured to match said input coplanar waveguide to an antiparallel diode pair, said antiparallel diode pair configured to provide a signal at a frequency 2f LO ; an RF input configured to receive an RF input signal having a frequency f RF , said RF input signal provided by a second coplanar waveguide; an RF matching network configured to match said second input coplanar waveguide to said diode pair; said mixer configured to generate sum and difference signals, said sum signal having a frequency f OUT+ =2f LO +f RF and said difference signal having a frequency f OUT− =|2f LO −f RF |, where the difference frequency is always understood to be a frequency that is measured by the absolute value of the difference between the two input frequencies; an IF matching network configured to match the output circuitry to a coplanar waveguide and a filter configured to allow one of said sum signal and said difference signal to pass; and an IF output connected to a third coplanar waveguide.