Novel Active Bandpass Switchplexer for RF Transceiver Front-End Applications

Yo Shen Lin, Ting Wei Liang, Ya Chun Huang, Wei Fan Hsia, Chien Fong Wu, Ping Chieh Wang, Chiou Wen You, Yu Hsuan Chung

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


In this paper, the design of RF transceiver front-end using a novel multifunction microwave circuit is proposed. By designing one arm of the proposed active bandpass switchplexer as a bandpass power amplifier (PA) and the other arm as a single-to-balanced bandpass low-noise amplifier (LNA), the resulted multifunctional microwave filtering device thus effectively integrates the functions of single-pole-double-throw RF switch, bandpass filter, balun, PA, and LNA. In this way, all the function blocks between the antenna and up/down converters of a single-band time-division duplex transceiver front-end can be integrated into a single circuit. Compared to the previous works on multifunction microwave circuit designs, the proposed active bandpass switchplexer features the highest number of integrated functions. A printed circuit board-based design example of the proposed active bandpass switchplexer is presented to validate the proposed design concept and to demonstrate the performance achieved.

Original languageEnglish
Article number7972995
Pages (from-to)1516-1530
Number of pages15
JournalIEEE Transactions on Components, Packaging and Manufacturing Technology
Issue number9
StatePublished - Sep 2017


  • Balun
  • RF switch
  • bandpass filter
  • filter synthesis
  • low-noise amplifier (LNA)
  • matching network
  • power amplifier (PA)


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