题目/Title：Self-tuned SAW-less GNSS receiver front end with blocker filtering and gain-irrelevant DC offset cancellation

作者/Author：俞小宝,宋颖,王志华,池保勇
                        Xiaobao Yu,Ying Song,Zhihua Wang,Baoyong Chi

期刊/Journal：Electronics Letters

年份/Issue Date：2015Apr.

卷（期）及页码/Volume（No.）&pages：Vol.51, No.8, pp. 653 - 654

摘要/Abstract：
A self-tuned surface acoustic wave (SAW)-less global navigation satellite system (GNSS) receiver is proposed. In the self-tuning mode, the radio-frequency amplifier (RFA) is configured as an oscillator and the receiver chain is reused to realise a simple self-calibration. In the normal operation, the RFA works as a Q-enhanced radio-frequency filter to remove the out-of-band blockers. A gain-irrelevant DC offset cancellation is also presented. This GNSS receiver achieves 4.8 dB noise figure and a rejection of 25.8 and 31.8 dB for DCS (1710 MHz) and PCS (1850 MHz) blockers, while consuming <5 mA current from a 1.7 V supply.