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Full integration of the PA at high efficiency has long been one of the most difficult challenges in achieving low-cost RF transceiver functions in CMOS. Supply voltage diminution as a result of CMOS technology scaling has made this even more difficult. Much of the recent work in CMOS PAs has been targeted at efficiency enhancement techniques to compensate(More)
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A 1.55GHz CMOS RF transmitter with an integrated Class-C Power Amplifier (PA) is described. The transmitter uses Cartesian Feedback to meet EDGE linearity requirements and integrates a direct-conversion modulator, PA, LO phase shifter, feedback mixers and baseband loop filter in a 0.18µm CMOS process. The transmitter produces an 18dBm EDGE modulated output(More)
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