3.3 V GPS receiver MMIC implemented on a mixed-signal, silicon bipolar array

The generic Global Positioning System (GPS) monolithic microwave integrated circuit (MMIC) described contains two downconversion stages and the dividers, buffers, digital phase-frequency detector and negative resistance cell required to synthesize both local oscillators and a transistor-transistor logic system clock. The MMIC operates from a 20-MHz external reference and provides overall conversion gain of about 65 dB from a 1575-MHz RF to a 15-MHz second IF. The 1.8-mm*1.8-mm MMIC was implemented on a mixed-signal, silicon bipolar cell array and consumed less than 150 mW from a single 3.3-V supply.<>