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Integrated radio-frequency receiver

  • US 20030228860A1
  • Filed: 06/06/2002
  • Published: 12/11/2003
  • Est. Priority Date: 06/06/2002
  • Status: Abandoned Application
First Claim
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1. An integrated radio-frequency receiver, comprising:

  • a local oscillator, to generate a local oscillation signal;

    a mixer apparatus, coupled to the local oscillator to receive a radio-frequency carrier input signal and the local oscillation signal, and to mix, filter and amplify the radio-frequency carrier input signal and the local oscillation signal to output a first amplified signal and a second amplified signal;

    a phase-shift apparatus, coupled to the mixer apparatus to shift phases of the first and second amplified signals with a first degree and a second degree, and to output a first phase-shifted signal and a second phase-shifted signal; and

    an analog-to-digital conversion apparatus, coupled to the mixer apparatus and the phase-shift apparatus to receive the first amplified signal and the second phase-shifted signal, and the second amplified signal and the first phase-shifted signal, so as to output an in-phase signal and an orthogonal-phase signal by performing analog-to-digital conversion thereon, respectively.

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