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Abstract
Power engineering deals with the static and rotating power equipment for the generation, transmission and distribution of electric power. Electronics deals with the study of solid state semiconductor power devices and circuits for Power conversion to meet the desired control objectives (to control the output voltage and output power).
Aiming at the expansive application of RFID technology, design considerations are expatiated to a highly-integrated, multimode, power-adjustable transmitter in mobile UHF RFID reader with CMOS process. The transmitter consists of digital, baseband and RF sections, including an up-conversion mixer and a gain-variable power amplifier (PA). Multiple data modes can be generated in digital section. The direct-conversion RF section is proposed to minimize the off-chip components and provide a low-cost, highly efficient solution. The highlight of the paper is the PA can achieve a maximum output power of 26 dBm and maintain a power-added efficiency (PAE) higher than 40% over the 18–26 dBm power range. Feasibility of the transmitter is validated by ADS simulator.
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