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POLAR RECEIVER USING INJECTION-LOCKING TECHNIQUE

  • US 20130143509A1
  • Filed: 06/01/2012
  • Published: 06/06/2013
  • Est. Priority Date: 12/02/2011
  • Status: Active Grant
First Claim
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1. A polar receiver using injection-locking technique comprising:

  • an antenna configured to receive a radio frequency signal;

    a first filter electrically connected with the antenna and configured to receive the radio frequency signal and output an initial signal;

    a first voltage-controlled oscillator electrically connected with the first filter and configured to receive the initial signal and output an output signal, and the output signal has an oscillation frequency;

    a first mixer electrically connected with the first filter and the first voltage-controlled oscillator, wherein the first mixer combines the initial signal and the output signal of the first voltage-controlled oscillator to form a mixed signal;

    a frequency discriminator electrically connected with the first voltage-controlled oscillator and configured to receive the output signal of the first voltage-controlled oscillator and output a frequency signal;

    a second filter electrically connected with the first mixer and configured to receive the mixed signal and output an envelope signal;

    a third filter electrically connected with the frequency discriminator and configured to receive the frequency signal and output a frequency modulated signal;

    a first analog-digital converter electrically connected with the second filter and configured to receive the envelope signal and output a first digital signal;

    a second analog-digital converter electrically connected with the third filter and configured to receive the frequency modulated signal and output a second digital signal; and

    a digital signal processing unit electrically connected with the first analog-digital converter and the second analog-digital converter, wherein the digital signal processing unit receives the first digital signal and the second digital signal, and a demodulated output signal is obtainable by means of digital process of the first digital signal and the second digital signal.

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