Silicon bipolar 12 GHz downconverter for satellite receivers

Abstract

A silicon monolithic downconverter designed for consumer satellite television receivers operating from 10.7 to 12.7 GHz has been developed. The downconverter includes a double balanced mixer, oscillator, IF filter, two stage IF amplifier, and a double pole single throw switch. The chip is housed in an internally designed 16 lead dual in line plastic package. The unit provides 13 dB of conversion gain and a phase noise of 105 dBc/Hz at a 10 kHz offset when used with an external dielectric resonator. The IC requires a single 5 volt supply and draws 30 mA.