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1.发明公开公开(公告)号：US20240244572A1
公开(公告)日：2024-07-18
申请号：US18618458
申请日：2024-03-27
Applicant: Silicon Laboratories Inc.
Inventor： Rangakrishnan Srinivasan , John Khoury
Abstract: A system and method for accurately determining a distance between two network devices using a Channel Sounding application is disclosed. The network devices each guarantee a fixed phase relationship between the transmit circuit and the receive circuit. In one embodiment, this is achieved by disposing the divider outside the phase locked loop and using the output of the divider to create the clocks for both the transmit circuit and receive circuit. In another embodiment, one or more dividers are disposed outside the phase locked loop, each having a reset, such that they can be initialized to a predetermined state. Further, by utilizing a divider with a reset, the quadrature signal generator is guaranteed to output clocks for the transmit circuit and the receive circuit that have a constant phase relationship.
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公开(公告)号：US11444627B1
公开(公告)日：2022-09-13
申请号：US17549314
申请日：2021-12-13
Applicant: Silicon Laboratories Inc.
Inventor： Rangakrishnan Srinivasan , Michael Wu , Francesco Barale , John Khoury , Aslamali A. Rafi
Abstract: A system and method for accurately determining a distance between two network devices using a Channel Sounding application is disclosed. The network devices each guarantee a fixed phase relationship between the transmit circuit and the receive circuit. In one embodiment, this is achieved by incorporating the divider within the phase locked loop. The divider may have a reset, such that it can be initialized to a predetermined state. Further, by utilizing a divider disposed within the phase locked loop with a reset, the quadrature signal generator is guaranteed to output clocks for the transmit circuit and the receive circuit that have a constant phase relationship.
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公开(公告)号：US12192951B2
公开(公告)日：2025-01-07
申请号：US18618458
申请日：2024-03-27
Applicant: Silicon Laboratories Inc.
Inventor： Rangakrishnan Srinivasan , John Khoury
Abstract: A system and method for accurately determining a distance between two network devices using a Channel Sounding application is disclosed. The network devices each guarantee a fixed phase relationship between the transmit circuit and the receive circuit. In one embodiment, this is achieved by disposing the divider outside the phase locked loop and using the output of the divider to create the clocks for both the transmit circuit and receive circuit. In another embodiment, one or more dividers are disposed outside the phase locked loop, each having a reset, such that they can be initialized to a predetermined state. Further, by utilizing a divider with a reset, the quadrature signal generator is guaranteed to output clocks for the transmit circuit and the receive circuit that have a constant phase relationship.
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公开(公告)号：US20240421770A1
公开(公告)日：2024-12-19
申请号：US18337278
申请日：2023-06-19
Applicant: Silicon Laboratories Inc.
Inventor： Mustafa Koroglu , John Khoury , Yan Zhou , Ajmal Vadakkan Kayyil , Vitor Pereira
Abstract: In one embodiment, an apparatus includes: a wake-up radio to issue a trigger signal in response to detection of a wake-up message in a radio frequency (RF) signal; and a second radio coupled to the wake-up radio, the second radio to wake up in response to receipt of the trigger signal. The wake-up radio may be coupled to the second radio without substantial loading, and may be configured with stacked circuits to reuse currents.
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公开(公告)号：US11979846B2
公开(公告)日：2024-05-07
申请号：US17550417
申请日：2021-12-14
Applicant: Silicon Laboratories Inc.
Inventor： Rangakrishnan Srinivasan , John Khoury
Abstract: A system and method for accurately determining a distance between two network devices using a Channel Sounding application is disclosed. The network devices each guarantee a fixed phase relationship between the transmit circuit and the receive circuit. In one embodiment, this is achieved by disposing the divider outside the phase locked loop and using the output of the divider to create the clocks for both the transmit circuit and receive circuit. In another embodiment, one or more dividers are disposed outside the phase locked loop, each having a reset, such that they can be initialized to a predetermined state. Further, by utilizing a divider with a reset, the quadrature signal generator is guaranteed to output clocks for the transmit circuit and the receive circuit that have a constant phase relationship.
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Patent Agency Ranking
公开(公告)号：US09401726B2
公开(公告)日：2016-07-26
申请号：US14554790
申请日：2014-11-26
Applicant: Silicon Laboratories Inc.
Inventor： Kareem A. Ragab , John Khoury
CPC classification number: H03M1/1023 , H03M1/00 , H03M1/0626 , H03M1/0695 , H03M1/1004 , H03M1/1028 , H03M1/12 , H03M1/121 , H03M1/1215 , H03M1/124 , H03M2201/4233
Abstract: A robust and fast background calibration technique for correction of time-interleaved ADC offset, gain, bandwidth, and timing mismatches is proposed. The technique combines the use of a calibration signal and a reference ADC. The calibration signal enhances robustness and makes the technique independent of the input signal's statistics. The reference ADC speeds up convergence and enables the use of a small amplitude calibration signal that does not significantly reduce the input signal dynamic range. The calibration signal can be subtracted or filtered from the ADC output and is therefore invisible to the ADC user.
Abstract translation: 提出了用于校正时间交织的ADC偏移，增益，带宽和时序不匹配的鲁棒且快速的背景校准技术。 该技术结合使用校准信号和参考ADC。 校准信号增强了鲁棒性，使得该技术独立于输入信号的统计。 参考ADC可以加快收敛速度，并且可以使用不会显着降低输入信号动态范围的小幅度校准信号。 校准信号可以从ADC输出中减去或滤波，因此ADC用户不可见。
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公开(公告)号：US10574185B2
公开(公告)日：2020-02-25
申请号：US15639267
申请日：2017-06-30
Applicant: SILICON LABORATORIES INC.
Inventor： Tiago Marques , John Khoury
Abstract: A crystal driver circuit for driving a crystal to oscillate at a resonant frequency including an amplifier having an input coupled to an amplifier input node and having an output coupled to an amplifier output node, a current source that provides a core bias current to the amplifier, a first tune capacitor coupled between the amplifier output node and a reference node, and a second tune capacitor coupled between the amplifier input node and the reference node. The first tune capacitor has a first capacitance that is greater than a second capacitance of the second tune capacitor by a capacitance offset that reduces frequency shift during operation. The first and second capacitances have a combined capacitance that achieves an oscillating signal having a target frequency.
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8.发明授权公开(公告)号：US10256199B2
公开(公告)日：2019-04-09
申请号：US15644451
申请日：2017-07-07
Applicant: Silicon Laboratories Inc.
Inventor： Javier Elenes , Michael Johnson , John Khoury
Abstract: An integrated circuit includes an energy detection circuit, a switching circuit, and a tamper response circuit. The integrated circuit has an input for receiving a radio frequency (RF) signal, a first output for providing a demodulated signal, and a second output for selectively providing a detect signal. The detect signal is provided in response to detecting that an energy of an internal signal exceeds a first threshold when the integrated circuit is in a secure mode. The switching circuit is used to alternatively switch the input of the energy detection circuit to an RF input terminal in a normal mode and to an internal antenna in a secure mode. The tamper response circuit disables a function of the integrated circuit in response to an activation of the detect signal in the secure mode.
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9.发明申请公开(公告)号：US20190013281A1
公开(公告)日：2019-01-10
申请号：US15644451
申请日：2017-07-07
Applicant: Silicon Laboratories Inc.
Inventor： Javier Elenes , Michael Johnson , John Khoury
Abstract: An integrated circuit includes an energy detection circuit, a switching circuit, and a tamper response circuit. The integrated circuit has an input for receiving a radio frequency (RF) signal, a first output for providing a demodulated signal, and a second output for selectively providing a detect signal. The detect signal is provided in response to detecting that an energy of an internal signal exceeds a first threshold when the integrated circuit is in a secure mode. The switching circuit is used to alternatively switch the input of the energy detection circuit to an RF input terminal in a normal mode and to an internal antenna in a secure mode. The tamper response circuit disables a function of the integrated circuit in response to an activation of the detect signal in the secure mode.
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10.发明授权公开(公告)号：US09590630B2
公开(公告)日：2017-03-07
申请号：US14993083
申请日：2016-01-11
Applicant: Silicon Laboratories Inc.
Inventor： Jinwen Xiao , Pavel Konecny , Axel Thomsen , Clayton Daigle , Xiaodong Wang , John Khoury , Alan Westwick , Shahram Tadayon
IPC: G06F15/78 , H03K19/0175 , H01L25/00 , H01L27/24
CPC classification number: H03K19/017581 , H01L25/00 , H01L2924/0002 , H03K19/017509 , H01L2924/00
Abstract: An integrated circuit (IC) includes a plurality of pads adapted to send or receive signals, and a plurality of mixed signal interface blocks, each of which is coupled to a corresponding pad in the plurality of pads. Furthermore, each mixed signal interface block in the plurality of mixed signal interface blocks is adapted to be configurable to provide selected functionality independently of the other mixed signal interface blocks.
Abstract translation: 集成电路（IC）包括适于发送或接收信号的多个焊盘以及多个混合信号接口块，每个混合信号接口块耦合到多个焊盘中的相应焊盘。 此外，多个混合信号接口块中的每个混合信号接口块适于可配置成独立于其它混合信号接口块提供所选功能。
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