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Ultra-Low-Power RF Receiver Frontend With Tunable Matching Networks

  • US 20170302316A1
  • Filed: 04/14/2016
  • Published: 10/19/2017
  • Est. Priority Date: 04/14/2016
  • Status: Active Grant
First Claim
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1. A tunable matching, circuit, comprising:

  • an input port for receiving an RF input signal via an electrical connection having a parasitic inductance;

    an output port;

    a switched capacitor circuit coupled to the input port and to ground, the switched capacitor circuit having a first digital control bit input port;

    a switched resistor circuit coupled to the input port and the output port, the switched resistor circuit having a first digital control, bit input port; and

    a low noise amplifier (LNA) coupled to the input port and the output port, the LNA configured to amplify the RF input signal to form an RF output signal, wherein the LNA is configured to operate in an ultra-low power mode.

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