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INTEGRATED CIRCUIT BALANCED MIXER APPARATUS

  • US 3,727,078 A
  • Filed: 03/30/1972
  • Issued: 04/10/1973
  • Est. Priority Date: 03/30/1972
  • Status: Expired due to Term
First Claim
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1. Balanced mixer circuit apparatus comprising:

  • a first semiconductive body of a first conductivity type having first and second field effect transistors disposed therein, each of said field effect transistors having a control gate, a source and drain, said first body forming a substrate gate common to said first and second transistors;

    means electrically coupling the sources of said first and second transistors together;

    first input circuit means for coupling a first input signal of a first frequency in push-pull relationship to the control gates of said first and second transistors;

    second input circuit means for coupling a second input signal of a second frequency to said substrate gate;

    a source of DC potential coupled in circuit across the source and drain of said first and second transistors; and

    output circuit means coupled between the drains of said first and second transistors, whereby said first and second signals simultaneously drive said first and second field effect transistors to develop an output signal in said output circuit means including the sum and difference frequencies of said first and second input signals.

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