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Beam forming network

  • US 4,503,436 A
  • Filed: 12/10/1982
  • Issued: 03/05/1985
  • Est. Priority Date: 12/10/1982
  • Status: Expired due to Fees
First Claim
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1. In an electromagnetic communication system which includes a network of feed elements that operate in groups so that each feed element can receive separate portions of a transmit signal and form therefrom a combined electromagnetic transmit beam, the improvement including:

  • first and second substantially planar circuits lying in closely spaced parallel planes;

    a plurality of transmit dividers mounted on said second circuit, each divider having an input for receiving a transmit signal and a plurality of output lines;

    a plurality of transmit combiners mounted on a first circuit, each combiner having a plurality of input lines, so that each combiner can receive a portion of several signals from several corresponding divider output lines, each combiner having an output coupled to one of said feed elements;

    a plurality of the output lines of each divider extending in the plane of the second circuit, each output line extending at least one-fourth of the distance towards the lateral position of a transmit combiner and having an output line end;

    a plurality of the input lines of each combiner extending in the plane of the first circuit, each input line extending at least one-fourth of the distance towards the lateral position of a divider and having an output line end lying at the same lateral position as a corresponding divider output line end; and

    a plurality of interboard connectors, each extending perpendicular to the planes of said circuits and each connecting the end of a divider output line to the end of the combiner input line that lies at the same lateral position.

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