Distribution network for phased array antennas
First Claim
1. A phased array antenna, comprising:
- a planar array of electronic antenna elements;
a means for distributing energy to the antenna elements of the planar array, comprising at least one waveguide parallel to the planar array and having an array of radiating slots; and
a means for exciting the means for distributing energy, comprising an orthogonal waveguide having a row of slots adjacent to the radiating slots.
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Accused Products
Abstract
A distribution network for a modified space-fed phased array antenna consists of a planar array of radiating slots distributed along a coplanar wall in each of an ensemble of parallel waveguides. This waveguide ensemble is fed or excited by an orthogonal waveguide or waveguides, through a row of slots in a wall common to the excitation waveguides and the parallel waveguide ensemble, one slot per waveguide. A predetermined amplitude distribution is achieved in the plane parallel to the axis of the exciting waveguide by adjusting the coupling value of each exciting slot, and in the orthogonal plane by adjusting the displacement of the radiating slots from the center line of the waveguides, and by adjusting slot width, length, and geometry. Such an array of slots is used to feed the inside face of a quasi-space-fed antenna array having identical, individual electronics modules.
72 Citations
12 Claims
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1. A phased array antenna, comprising:
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a planar array of electronic antenna elements; a means for distributing energy to the antenna elements of the planar array, comprising at least one waveguide parallel to the planar array and having an array of radiating slots; and a means for exciting the means for distributing energy, comprising an orthogonal waveguide having a row of slots adjacent to the radiating slots. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A phased array antenna comprising:
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a planar array of electronic antenna elements, each antenna element having a means for receiving radiation; and a means for distributing radiation energy to each means for receiving radiation, the means for distributing radiation comprising a slotted waveguide parallel to the planar array of antenna elements.
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Specification