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DIRECTIONAL DIODE EXPANDER

  • US 3,808,561 A
  • Filed: 11/29/1967
  • Issued: 04/30/1974
  • Est. Priority Date: 11/29/1967
  • Status: Expired due to Term
First Claim
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1. A microwave power transmission device having two ports and including a means for providing different threshold levels of conduction for different directions of propagation, said means comprising:

  • a. a first diode means and a second diode means, said second diode means being selected to have a poorer recitification characteristic than said first diode means;

    b. said first and second diode means being placed within said transmission device in a spaced relation such that power flowing in one direction will encounter said first diode means before said second diode means and power flowing in an opposite direction will encounter said second diode means before encountering said first diode means; and

    c. a circuit means for providing a dc current path between said first and said second diode means, whereby when microwave power is flowing into said transmission device in said one direction it will impinge upon said first diode means causing a dc current to flow from said first diode means to said second diode means and when microwave power enters said transmission device from said opposite direction it will encounter said second diode means and will be substantially reflected until relatively higher power levels are used.

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