公开(公告)号：US20220416445A1

公开(公告)日：2022-12-29

申请号：US17356766

申请日：2021-06-24

Applicant: Silicon Laboratories Inc.

Inventor： Terry Lee Dickey ,  Attila Zólomy ,  Adám Süle ,  Sauli Lehtimaki ,  Szabolcs Lörincz

IPC: H01Q21/24 ,  H01Q15/24

Abstract: A system and method for selecting a polarization for a particular antenna in an antenna array is disclosed. The system comprises an antenna array, wherein each antenna is adapted to receive and transmit horizontally and vertically polarized signals. The system also includes a switching network that is adapted to select the vertical or horizontal polarized signal for each antenna in the antenna array. The switching network also allows selection of a circular polarized signal from one or more of the antenna elements in the antenna array. This allows the AoX to be more accurate, as it is able to receive horizontally and vertically polarized signals, rather than just circular polarized signals, thereby improving its accuracy. The ability to receive circular polarized signals may be beneficial during reference periods to acquire the proper gain and frequency.

公开(公告)号：US20220376395A1

公开(公告)日：2022-11-24

申请号：US17325548

申请日：2021-05-20

Applicant: Silicon Laboratories Inc.

Inventor： Pasi Rahikkala ,  Tuomas Hänninen ,  Attila Zólomy

IPC: H01Q7/00 ,  H01Q1/48

Abstract: A loop type ground radiating antenna having dual resonance is disclosed. The antenna including a feeding path that traverses the ground clearance, creating a first portion and a second portion. One or more first capacitors are disposed along a first conductive path between the ground clearance and the edge of the ground layer, proximate the first portion, while one or more second capacitors are disposed along a second conductive path between the ground clearance and the edge of the ground layer, proximate the second portion. An input capacitor is used to feed the feeding path. The values of the input capacitor and the first capacitors determine a resonant frequency of the first feeding loop, while the values of the input capacitor and the second capacitors determine a resonant frequency of the second feeding loop. By proper selection of the capacitor values, a wide bandwidth may be created.