A 1.57-GHz RF front-end for triple conversion GPS receiver

F. Piazza, Qiuting Huang
1998 IEEE Journal of Solid-State Circuits  
A low-power, 1.57-GHz RF front-end for a global positioning system (GPS) receiver has been designed in a 1.0-m BiCMOS technology. It consists of a low noise amplifier with 15 dB of gain, a single balanced mixer with 6.3 mS of conversion g m , a Colpitts LC local oscillator, and an emitter coupled logic (ECL) divide-by-eight prescaler. This front-end has a singal sideband (SSB) noise figure of 8.1 dB and is part of a triple conversion superheterodyne receiver whose IF frequencies are 179, 4.7,
more » ... ies are 179, 4.7, and 1.05 MHz. Low power consumption has been achieved, with 10.5 mA at 3-V supply voltage for the front-end, while the complete receiver is expected to draw about 12 mA.
doi:10.1109/4.658621 fatcat:orf4klvczfa4hjk65gvwftvv74