Cell phone device, radio frequency transceiver circuit and impedance adjustment device

Cell phone device, radio frequency transceiver circuit and impedance adjustment device

  • CN 104,967,460 A
  • Filed: 07/17/2015
  • Published: 10/07/2015
  • Est. Priority Date: 07/17/2015
  • Status: Active Application
First Claim
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1. a mobile device, comprising:

  • Baseband processor;

    Antenna, in order to receive and dispatch multiple radiofrequency signal;

    Duplexer, is electrically connected to this antenna;

    AndRadio-frequency transceiver circuitry, be connected to this baseband processor and this duplexer respectively, this radio-frequency transceiver circuitry comprises;

    First power amplifier, has the first output impedance;

    AndImpedence tuning apparatus, be electrically connected between this first power amplifier and this duplexer, wherein this impedence tuning apparatus comprises at least one switch;

    AndWherein this baseband processor connect and this at least one switch controlling this impedence tuning apparatus to adjust the resistance value of this impedence tuning apparatus, the first load impedance of this first power amplifier and this first output impedance are matched each other.

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