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A CMOS power amplifier (PA) for a UHF (860-960 MHz) stationary RFID reader is presented. To design a high power and power efficient CMOS PA, quasi four pair structure and integrated passive device (IPD) transformers are used. An amplitude modulation is performed through the cascode gate with a pulse shaping filter. The chips are fabricated in a 0.18 ??m CMOS process and IPD. Measurements show output...
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