Low profile waveguide network for antenna array
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United States of America Patent
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May 13, 2003
Grant Date -
N/A
app pub date -
Dec 23, 1999
filing date -
Dec 23, 1999
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Abstract
A waveguide network has a first port and a plurality of second ports connected to a two dimensional rectangular array of antenna elements. The second ports and antenna elements are oriented in a fixed direction. The waveguide network includes at least three successive sets of junctions and bends including a first set connected to the first port and a last set connected to the second ports. The junctions and bends in each set are all E-plane junctions and E-plane bends or are all H-plane junctions and H-plane bends, and successive sets alternate between a set of E-plane junctions and E-plane bends and a set of H-plane junctions and H-plane bends. The bends in at least one set lead in the fixed direction, and the bends in at least one other set, not including the last set, lead in a direction opposite to the first direction. Preferably, the waveguide bends in each set, other than the first set and possibly the last set, lead in a direction opposite to the bends in the previous set. The waveguide network is conveniently assembled from one piece containing all of the E-plane junctions and E-plane bends and another containing all of the H-plane junctions and H-plane bends.
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