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公开(公告)号：US12119555B2
公开(公告)日：2024-10-15
申请号：US17535214
申请日：2021-11-24
CPC分类号： H01Q21/24 , G01S3/043 , H01Q1/48 , H01Q9/0421
摘要： An angle-of-arrival antenna system uses two orthogonal arrays of patch antenna elements to measure the angle of arrival of a wireless signal irrespective of its polarization. Each antenna element has an antenna patch located over a corresponding ground patch. A shorting wall directly electrically connects one edge of the antenna patch to a corresponding edge of the underlying ground patch. The edge of the ground patch is also directly connected to a system ground plane. No other edges of the ground patch are connected to the system ground plane. The shorting wall acts as an impedance that isolates the ground patch from the system ground plane, and therefore improves isolation between the antenna elements. The antenna system may be constructed using conventional circuit-board fabrication techniques by implementing each shorting wall as an array of plated through-holes or slots.
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公开(公告)号：US20230125795A1
公开(公告)日：2023-04-27
申请号：US17535214
申请日：2021-11-24
摘要： An angle-of-arrival antenna system uses two orthogonal arrays of patch antenna elements to measure the angle of arrival of a wireless signal irrespective of its polarization. Each antenna element has an antenna patch located over a corresponding ground patch. A shorting wall directly electrically connects one edge of the antenna patch to a corresponding edge of the underlying ground patch. The edge of the ground patch is also directly connected to a system ground plane. No other edges of the ground patch are connected to the system ground plane. The shorting wall acts as an impedance that isolates the ground patch from the system ground plane, and therefore improves isolation between the antenna elements. The antenna system may be constructed using conventional circuit-board fabrication techniques by implementing each shorting wall as an array of plated through-holes or slots.
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公开(公告)号：US20230170852A1
公开(公告)日：2023-06-01
申请号：US17987985
申请日：2022-11-16
发明人： Ariel Leonardo Vera Villarroel , Ronald F. Talaga, JR. , Abdelrahman Hesham Elsayed Ahmed , Jianwei Wang
CPC分类号： H03F1/42 , H03F1/18 , H03F3/2175 , H03F2203/45101
摘要： Various embodiments of the invention provide for an AC-coupling method and systems that utilize a nested loop circuit to generate a differential mode output that facilitates an offset compensation and a common mode output that facilitates DC-biasing of an active circuit. In embodiments, the nested loop circuit comprises a differential amplifier and a differential mode loop that generates a differential mode output and a common mode loop that uses a common mode voltage and a reference voltage to generate the common mode output.
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