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A multimode, power-adjustable transmitter for UHF mobile RFID reader

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Abstract

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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Authors and Affiliations

  1. Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China

    Tongqiang Gao & Haigang Yang

  2. Institute of Microelectronics, Tsinghua University, Beijing, China

    Zhihua Wang

Authors
  1. Tongqiang Gao
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  2. Haigang Yang
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  3. Zhihua Wang
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Correspondence to Tongqiang Gao.

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Gao, T., Yang, H. & Wang, Z. A multimode, power-adjustable transmitter for UHF mobile RFID reader. Analog Integr Circ Sig Process 66, 323–329 (2011). https://doi.org/10.1007/s10470-010-9525-1

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  • DOI: https://doi.org/10.1007/s10470-010-9525-1

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