Butler matrix for 3D integrated RF front-ends
First Claim
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1. An apparatus, the apparatus being a radar apparatus comprising:
- a substrate, having a first side and a second side;
an antenna disposed on the first side of the substrate, the antenna comprising antenna elements;
a Butler matrix supported by the substrate, the Butler matrix having input ports and output ports,each output port of the Butler matrix being electrically connected with a group of antenna elements; and
input connections configured to allow electrical communication with the input ports of the Butler matrix.
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Abstract
A radar apparatus comprises a substrate having first and second sides, an antenna including radiative elements disposed on the first side of the substrate, a Butler matrix supported by the substrate having input and output ports, where each output port of the Butler matrix is electrically connected to a group of radiative elements, and input connections between a radio-frequency (RF) circuit and the input ports of the Butler matrix. The RF circuit may be supported by the second side of the substrate.
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Citations
20 Claims
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1. An apparatus, the apparatus being a radar apparatus comprising:
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a substrate, having a first side and a second side; an antenna disposed on the first side of the substrate, the antenna comprising antenna elements; a Butler matrix supported by the substrate, the Butler matrix having input ports and output ports, each output port of the Butler matrix being electrically connected with a group of antenna elements; and input connections configured to allow electrical communication with the input ports of the Butler matrix. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus, the apparatus being a radar apparatus comprising:
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a substrate, having a first side and a second side; an antenna disposed on the first side of the substrate, the antenna comprising radiative elements; a Butler matrix supported by the substrate, the Butler matrix having input ports and output ports, each output port of the Butler matrix being electrical connected with a group of radiative elements; a radio-frequency circuit (RF circuit) supported on the second side of the substrate; and input connections between the RF circuit and the input ports of the Butler matrix. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification