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Omnidirectional antenna with single feedpoint

  • US 5,726,666 A
  • Filed: 04/02/1996
  • Issued: 03/10/1998
  • Est. Priority Date: 04/02/1996
  • Status: Expired due to Term
First Claim
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1. An antenna, comprising:

  • an antenna assembly having a waveguide cavity formed by a plurality of intersecting wall segments, including a rear wall, a front wall, a pair of spaced-apart side walls, the rear wall and the front wall positioned in spaced-apart parallel planes and connected by the side walls, and end caps connected to each end of the waveguide cavity, at least one of the front and rear walls having a planar array of slots; and

    a probe, mounted to the approximate midpoint of the antenna assembly, for distributing radio frequency (RF) energy, the probe comprising;

    a post, inserted perpendicular to the rear wall and to the front wall, connected to at least one of the rear wall and the front wall, including (1) a post cavity located within and extending along at least a portion of the post, and (2) a post slot having an opening located along the post and traversing the post cavity, anda probe pin, inserted within an end of the post cavity and connected to an opposite end of the post cavity, for coupling RF energy to the waveguide cavity via the post slot.

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