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公开(公告)号：US20250007769A1
公开(公告)日：2025-01-02
申请号：US18217015
申请日：2023-06-30
Applicant: Silicon Laboratories Inc.
Inventor： Wentao Li , Yan Zhou , Terry Lee Dickey
IPC: H04L27/26 , H04L5/00 , H04L25/497
Abstract: A receiver includes a demodulator having a configurable correlator bank that helps with fast and robust signal detection. The demodulator detects arrival of a first preamble symbol using a first correlator bank configuration. The demodulator makes a course frequency offset estimation after detection of the first preamble signal and the receiver adjusts a frequency used by a mixer based on the coarse frequency offset estimation. The demodulator confirms signal arrival detection with detection of a second preamble symbol. A coarse timing estimation is generated using a second correlator bank configuration using a multi-symbol observation period. A fine frequency offset estimation is made using a third correlation bank configuration. A fine timing estimation is made using a fourth correlation bank configuration. The demodulator then despreads received symbols using a fifth correlator bank configuration.
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公开(公告)号：US20220416440A1
公开(公告)日：2022-12-29
申请号：US17830548
申请日：2022-06-02
Applicant: Silicon Laboratories Inc.
Inventor： Ádám Süle , Attila Zólomy , Szabolcs Lõrincz , Terry Lee Dickey
Abstract: A printed circuit board having an AoX antenna array and a feeding circuit is disclosed. The AoX antenna array has patch antenna disposed on a top layer of the printed circuit board, while the feeding circuit is disposed on the bottom layer. The signal traces that connect the ports of the antenna unit cells to the antenna selection switches are routed so that all are roughly equal in length with a minimal length of parallel sections between signal traces. Thus, the signal traces in the feeding circuit are created so as to minimize phase difference between signal traces and to minimize coupling. Coplanar waveguides, which utilize blind vias are used to further reduce coupling.
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公开(公告)号：US20220416436A1
公开(公告)日：2022-12-29
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
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.
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4.发明授权公开(公告)号：US10587295B1
公开(公告)日：2020-03-10
申请号：US16217494
申请日：2018-12-12
Applicant: SILICON LABORATORIES INC.
Inventor： Terry Lee Dickey , Yan Zhou , Praveen Vangala
Abstract: A wireless receiver including multiple amplifiers coupled in series for amplifying a signal being received, at least one detector that provides a strength indication of the signal being received, multiple AGC schedules each determining a gain reduction schedule for the amplifiers, an AGC schedule selector that selects one of the AGC schedules based on a schedule select input, and an AGC controller that adjusts a gain of at least one of the amplifiers according to a selected AGC schedule based on the strength indication of the signal being received. The AGC schedules may include a first AGC schedule configured for improved SNR performance and a second AGC schedule configured for improved distortion performance. The second AGC schedule may be selected for improved distortion performance when a strong distorting blocker signal is present, and otherwise the first AGC schedule may be selected for better SNR performance.
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公开(公告)号：US09980277B2
公开(公告)日：2018-05-22
申请号：US15084125
申请日：2016-03-29
Applicant: Silicon Laboratories, Inc.
Inventor： Terry Lee Dickey , Christopher L. McCrank , Jesse Ira Masters , Donald Miner Markuson , Micah Solomon Evans
CPC classification number: H04W72/1215 , H04L1/1685 , H04W72/14 , H04W88/06 , Y02D70/00 , Y02D70/142 , Y02D70/144 , Y02D70/162
Abstract: A system and method of minimizing interference and retries in an environment where two or more network protocols utilize the same frequency spectrum is disclosed. A lower-power network controller is co-located with a WIFI controller. The lower-power network controller parses incoming packets as they are received and generates a request signal once it is determined that the incoming packet is destined for this device. This maximizes the likelihood that no WIFI traffic will occur while the incoming packet is being received.
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Patent Agency Ranking
公开(公告)号：US20250007770A1
公开(公告)日：2025-01-02
申请号：US18217019
申请日：2023-06-30
Applicant: Silicon Laboratories Inc.
Inventor： Wentao Li , Yan Zhou , Terry Lee Dickey
IPC: H04L27/26 , H04L5/00 , H04L25/497
Abstract: A demodulator has a correlator bank with multiple correlators. The correlator bank has multiple configurations, including a signal arrival configuration, a coarse timing configuration, and a despreading configuration. The various configurations are used to correlate function transformations of received symbols to template signals. Each correlator has elements with a number of delay blocks corresponding to a number of chips in a symbol. The output of each delay block is multiplied by a bit of a template signal by negating or not negating the output and the multiplications results are summed. A function transformations block receives phase information to generate the function transformations, which are supplied to the correlators. The function transformations include a transformation with a one chip differential, transformations with multi-chip differentials, an average transformation that includes an average of a one-chip phase difference between two adjacent samples, and a second order phase differentiation used for frequency deviation correlation.
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公开(公告)号：US11973481B2
公开(公告)日：2024-04-30
申请号：US17537075
申请日：2021-11-29
Applicant: Silicon Laboratories Inc.
Inventor： Vitor Pereira , Jeffrey A. Tindle , Mustafa H. Koroglu , Terry Lee Dickey
CPC classification number: H03H7/0115 , H03H7/0153 , H04B1/0458 , H04B1/18 , H04B1/40 , H03H2007/013
Abstract: A wireless transceiver including a receiver circuit coupled to an RF transceiver node, a tunable notch filter coupled between the RF transceiver node and a reference node, and a controller that programs the tunable notch filter with a selected blocker frequency and that selectively enables the tunable notch filter to attenuate at least one blocker signal. The tunable notch filter may include a variable capacitor and an inductor coupled in series between the RF transceiver node and ground. The inductor of the tunable notch filter may include a bondwire coupled between a semiconductor die and a semiconductor package. The inductance may include a physical inductor mounted on the package or a printed circuit board. The tunable notch filter may be enabled by a switch selectively coupling the filter to either the RF transceiver node or ground. The variable capacitor may be digitally programmed with digital values stored in a memory.
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公开(公告)号：US10342028B2
公开(公告)日：2019-07-02
申请号：US15658942
申请日：2017-07-25
Applicant: Silicon Laboratories Inc.
Inventor： Terry Lee Dickey , Hendricus DeRuijter
Abstract: A system and method of minimizing interference and retries in an environment where two or more network protocols utilize the same frequency spectrum is disclosed. A lower-power network controller is co-located with a WIFI controller. The lower-power network controller parses incoming packets as they are received and generates a request signal once it is determined that the incoming packet is destined for this device. This maximizes the likelihood that no WIFI traffic will occur while the incoming packet is being received.
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公开(公告)号：US10333213B2
公开(公告)日：2019-06-25
申请号：US15370724
申请日：2016-12-06
Applicant: Silicon Laboratories Inc.
Inventor： Attila Zolomy , Tamas Bodi , Tibor Herman , Terry Lee Dickey
Abstract: An apparatus includes a first antenna coupled to a first radio frequency (RF) circuit to receive or transmit RF signals, and a second antenna coupled to a second RF circuit to receive or transmit RF signals. The apparatus further includes a first RF current blocker disposed between the first and second antennas, and a second RF current blocker disposed between the first and second antennas. The first and second RF current blockers increase isolation between the first and second antennas.
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公开(公告)号：US10278200B2
公开(公告)日：2019-04-30
申请号：US15591594
申请日：2017-05-10
Applicant: Silicon Laboratories Inc.
Inventor： Terry Lee Dickey , Ramin Khoini-Poorfard , Jason Christopher Rock
Abstract: A system and method of minimizing interference and retries in an environment where two or more network protocols utilize the same frequency spectrum is disclosed. A lower-power network controller is co-located with a WIFI controller. The lower-power network controller parses incoming packets as they are received and generates a request signal once it is determined that the incoming packet is destined for this device. This maximizes the likelihood that no WIFI traffic will occur while the incoming packet is being received.
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