SLOT ANTENNA ELEMENT FOR AN ARRAY ANTENNA
First Claim
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1. An antenna element comprises:
- a feed circuit layer having a ground plane disposed thereon;
a radiator layer having a first ground plane disposed thereon with the ground plane having an aperture therein, said radiator layer disposed over said feed circuit layer; and
a cover layer disposed over said radiator layer;
a plurality of via holes between the first and second ground plane layers to provide a cavity in said radiator and feed circuit layers;
an antenna element feed disposed to couple energy between the feed circuit and the antenna element;
a switch beam combining circuit; and
a butler matrix coupled between said antenna element feed and said switched beam circuit.
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Abstract
A multiple beam array antenna system comprises a plurality of radiating elements provided from stripline-fed open-ended waveguide coupled to a Butler matrix beam forming network. The Butler matrix beam forming network is coupled to a switched beam combining circuit. The antenna can be fabricated as a single Low Temperature Co-fired Ceramic (LTCC) circuit.
69 Citations
1 Claim
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1. An antenna element comprises:
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a feed circuit layer having a ground plane disposed thereon;
a radiator layer having a first ground plane disposed thereon with the ground plane having an aperture therein, said radiator layer disposed over said feed circuit layer; and
a cover layer disposed over said radiator layer;
a plurality of via holes between the first and second ground plane layers to provide a cavity in said radiator and feed circuit layers;
an antenna element feed disposed to couple energy between the feed circuit and the antenna element;
a switch beam combining circuit; and
a butler matrix coupled between said antenna element feed and said switched beam circuit.
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Specification