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Distributed MMIC active quadrature hybrid and method for providing in-phase and quadrature-phase signals

  • US 5,986,518 A
  • Filed: 06/30/1998
  • Issued: 11/16/1999
  • Est. Priority Date: 06/30/1998
  • Status: Expired due to Fees
First Claim
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1. A quadrature hybrid comprising:

  • a first plurality of amplifying elements arranged in a distributed structure for amplifying an RF input signal and providing an in-phase RF output signal; and

    a second plurality of amplifying elements arranged in the distributed structure for amplifying the RF input signal and providing a quadrature RF output signal,wherein each amplifying element of the first plurality comprises a first field effect transistor (FET) employing source series inductance, andwherein each amplifying element of the second plurality comprises a second field effect transistor (FET) employing source series capacitance.

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