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A 65 nm CMOS Quad-Band SAW-Less Receiver SoC for GSM/GPRS/EDGE

A quad-band 2.5G receiver is designed to replace the front-end SAW filters with on-chip bandpass filters and to integrate the LNA matching components, as well as the RF baluns. The receiver achieves a typical sensitivity of -110 dBm or better, while saving a considerable amount of BOM. Utilizing an arrangement of four baseband capacitors and MOS switches driven by 4-phase 25% duty-cycle clocks, high-Q BPF's are realized to attenuate the 0 dBm out-of-band blocker. The 65 nm CMOS SAW-less receiver integrated as a part of a 2.5G SoC, draws 55 mA from the battery, and measures an out-of-band 1 dB-compression of greater than +2 dBm. Measured as a stand-alone, as well as the baseband running in call mode in the platform level, the receiver passes the 3GPP specifications with margin.