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This paper discusses an 866-MHz UHF quadrature voltage-controlled oscillator (QVCO) for RFID front-end. The VCO achieved an improved phase noise performance of 130 dBc/Hz at a carrier-offset of 1 MHz using an improved architecture employing pulsed self-biasing. It was fabricated using the IBM 130-nm CMOS process with the core VCO occupying around 0.36 mm die area. The loading effect of finite...
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