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APPARATUS AND METHOD FOR RADIO FREQUENCY RECEPTION WITH TEMPERATURE AND FREQUENCY INDEPENDENT GAIN

  • US 20120149321A1
  • Filed: 12/09/2010
  • Published: 06/14/2012
  • Est. Priority Date: 12/09/2010
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • a front end having an input and an output, the front end forming at least part of a radio frequency (RF) signal receive path, the front end comprising;

    a front-end resistor of the receive path, the front-end resistor configured to receive an input signal from the input of the front end;

    a passive mixer located downstream of the front-end resistor in the receive path, the passive mixer being configured to mix the input signal from the front-end resistor with a local oscillation signal, wherein the passive mixer is not coupled to a voltage reference for biasing;

    a transimpedance amplifier located downstream of the passive mixer on the receive path; and

    a feedback resistor coupled between an input and an output of the transimpedance amplifier.

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