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Binary phase shift keying modulation system and/or frequency multiplier

  • US 5,265,120 A
  • Filed: 03/11/1992
  • Issued: 11/23/1993
  • Est. Priority Date: 08/27/1990
  • Status: Expired
First Claim
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1. A BPSK Modulator circuit, comprising:

  • a transformer, said transformer further comprising first induction means having a carrier input leg and an output leg, second induction means having first and second leg outputs, said transformer configured such that said first and second leg outputs of said second induction means modulates at opposite phases of 180 and 0 degrees, forming "MOD +" and "MOD -", respectively, relative a carrier signal supplied to said carrier input of said first induction means;

    first and second phase selection means configured to modulate via input of said of said first and second outputs of said second induction means, said first and second phase selection means further comprising first and second load transistors or their equivalent, respectively, each having an emitter, and a base or the equivalent, said base of said first transistor in circuit with said first output of said second inductor, receiving said "MOD +", said base of said second transistor in circuit with said second output of said second inductor, receiving said "MOD -".

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