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Converter circuit for satellite broadcasting receivers having mixer isolation

  • US 5,584,064 A
  • Filed: 12/23/1994
  • Issued: 12/10/1996
  • Est. Priority Date: 12/24/1993
  • Status: Expired due to Term
First Claim
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1. A converter circuit comprising:

  • two first high electron mobility transistor units connected in series to each other;

    a first band-pass filter for eliminating signals of a specified band from a signal received from a latter-stage of said two first high electron mobility transistor units;

    a first high electron mobility transistor mixer for converting a signal derived from said first band-pass filter which does not include the signals of the specified band into a first intermediate frequency signal as an output thereof;

    a first directional filter for supplying oscillator power to said first high electron mobility transistor mixer;

    two second high electron mobility transistor units connected in series to each other;

    a second band-pass filter for eliminating signals of the specified band from a signal received from a latter-stage of said two second high electron mobility transistor units;

    a second high electron mobility transistor mixer for converting a signal derived from said second band-pass filter which does not include the signals of the specified band into a second intermediate frequency signal as an output thereof; and

    a second directional filter for supplying oscillator power to said second high electron mobility transistor mixer.

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