公开(公告)号：US11611152B2

公开(公告)日：2023-03-21

申请号：US17356853

申请日：2021-06-24

Applicant: Silicon Laboratories Inc.

Inventor： Attila Zólomy ,  Adám Süle ,  Andrea Nagy ,  Jeffrey Tindle ,  Pasi Rahikkala ,  Terry Lee Dickey

IPC: H01Q15/00 ,  H01Q21/00 ,  H01Q1/48 ,  H01Q9/04

Abstract: An antenna array that utilizes ground guard rings and metamaterial structures is disclosed. In certain embodiments, the antenna array is constructed from a plurality of antenna unit cells, wherein each antenna unit cell is identical. The antenna unit cell comprises a top surface, that contains a patch antenna and a ground guard ring. A reactive impedance surface (RIS) layer is disposed beneath the top surface and contains the metamaterial structures. The metamaterial structures are configured to present an inductance to the patch antennas, thereby allowing the patch antennas to be smaller than would otherwise be possible. In some embodiments, the metamaterial structures comprise hollow square frames. An antenna array constructed using this antenna unit cell has less coupling than conventional antenna arrays, which results in better performance. Furthermore, this new antenna array also requires less space than conventional antenna arrays.

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.

公开(公告)号：US20220216608A1

公开(公告)日：2022-07-07

申请号：US17705254

申请日：2022-03-25

Applicant: Silicon Laboratories Inc.

Inventor： Attila Zolomy ,  Pasi Rahikkala ,  Thomas E. Voor

IPC: H01Q7/00 ,  H01Q1/50 ,  H01Q9/14 ,  H01Q1/22

Abstract: An apparatus includes a radio frequency (RF) circuit to transmit or receive RF signals. The apparatus further includes a loop antenna to transmit or receive the RF signals. The apparatus further includes an impedance matching circuit coupled to the RF circuit and to the loop antenna. The impedance matching circuit includes lumped reactive components.

公开(公告)号：US20210148973A1

公开(公告)日：2021-05-20

申请号：US16685450

申请日：2019-11-15

Applicant: Silicon Laboratories Inc.

Inventor： Yuwono Kurnia Rahman ,  Pasi Rahikkala ,  Kian Jin Chua ,  Zhiyuan Guan ,  Wei Jue Lim

IPC: G01R31/304 ,  G01R31/303 ,  G01R27/06

Abstract: A test system for testing RF PCBs including an RF probe for interfacing an intermediate node of each RF PCB, an RF source providing an RF test signal, a reflectometer, and a test measurement system that makes a pass/fail determination of each RF PCB using a measured reflection coefficient. Each RF PCB includes an IC matching circuit and an antenna matching circuit coupled between an RFIC and an antenna, in which the intermediate RF node is between the matching circuits. The reflectometer outputs a measured reflection coefficient indicative of a comparison between a reflected RF signal and the RF test signal. The measured reflection coefficient may be corrected using error values based on a calibration procedure using a calibration kit with modified RF PCBs with known loads. The modified RF PCBs are measured with a network analyzer and the test system to calculate the error values used for production testing.

公开(公告)号：US10374300B2

公开(公告)日：2019-08-06

申请号：US15250719

申请日：2016-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Pasi Rahikkala ,  Attila Zolomy

IPC: H01Q9/04 ,  H01Q1/24 ,  H01Q1/38

Abstract: An apparatus includes a radio frequency (RF) circuit to transmit or receive RF signals, and a partitioned antenna structure. The partitioned antenna structure includes a first portion of a resonator and a first portion of a radiator. The first portion of the resonator comprises less than an entire resonator. The first portion of the radiator comprises less than an entire radiator.

公开(公告)号：US20190140352A1

公开(公告)日：2019-05-09

申请号：US16237583

申请日：2018-12-31

Applicant: Silicon Laboratories Inc.

Inventor： Attila Zolomy ,  Pasi Rahikkala ,  Thomas E. Voor

IPC: H01Q7/00 ,  H01Q1/50

Abstract: An apparatus includes a radio frequency (RF) circuit to transmit or receive RF signals. The apparatus further includes a loop antenna to transmit or receive the RF signals. The apparatus further includes an impedance matching circuit coupled to the RF circuit and to the loop antenna. The impedance matching circuit includes lumped reactive components.

公开(公告)号：US20180062254A1

公开(公告)日：2018-03-01

申请号：US15250719

申请日：2016-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Pasi Rahikkala ,  Attila Zolomy

IPC: H01Q1/38 ,  H01Q9/04 ,  H01Q1/24

CPC classification number: H01Q1/38 ,  H01Q1/24 ,  H01Q1/241 ,  H01Q9/0485 ,  H01Q9/14

Abstract: An apparatus includes a radio frequency (RF) circuit to transmit or receive RF signals, and a partitioned antenna structure. The partitioned antenna structure includes a first portion of a resonator and a first portion of a radiator. The first portion of the resonator comprises less than an entire resonator. The first portion of the radiator comprises less than an entire radiator.