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SCHWARZCHILD RADAR ANTENNA UTILIZING A RING SWITCH FOR GENERATING A SECTOR SCAN

  • US 3,798,655 A
  • Filed: 02/26/1973
  • Issued: 03/19/1974
  • Est. Priority Date: 02/26/1973
  • Status: Expired due to Term
First Claim
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1. A Schwarzschild Antenna having main and subreflectors, the antenna being capable of generating a high-gain, unidirectional sector-scanning beam by apparatus comprising:

  • a stationary ring having a microwave energy input therein;

    waveguide means formed in the stationary ring for transmitting microwave energy to a mating rotating ring that has waveguide means formed therein;

    horn means mounted to the rotating ring for directing communicated microwave energy from the waveguide means of the rotating ring along a radially inward spacial direction during traversal of the horn means through a preselected arc thereby generating a unidirectional sector scan beam; and

    means for reflecting the generated unidirectional sector scan beam to the far field via the main and subreflectors, during transmission.

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