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Split channel receiver with very low second order intermodulation

  • US 8,073,078 B2
  • Filed: 02/08/2008
  • Issued: 12/06/2011
  • Est. Priority Date: 02/08/2008
  • Status: Expired due to Fees
First Claim
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1. A radio frequency receiver, comprising:

  • a transconductance amplifier operable to amplify and convert a first received voltage of a first radio frequency signal to first and second currents that are electrically isolated;

    a pulse generator operable to generate in-phase and quadrature pulses;

    a mixer operable to combine the first current with the in-phase pulses to produce a third current comprising an in-phase signal; and

    combine the second current with the quadrature pulses to produce a fourth current comprising a quadrature signal; and

    a filter operable to filter the third and fourth currents to filtered voltage signals;

    where the transconductance amplifier comprises separate cascode stages isolating the first and second currents.

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