Butler matrix for 3D integrated RF front-ends
AssigneeToyota Motor Engineering & Manufacturing North America, Inc.
InventorsAlexandros Margomenos, Ruihua Ding
Life of this patent
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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.
Claims20
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.
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 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.
Dependencies are inferred from the claim text.