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1. 发明授权

US11374553B2 Signal processing device and signal processing method 有权
公开(公告)号：US11374553B2
公开(公告)日：2022-06-28
申请号：US16905941
申请日：2020-06-19
申请人： Realtek Semiconductor Corp.
发明人： Chih-Hao Liu
IPC分类号： H03H17/08 , G06F17/16
摘要： A signal processing method performed by a processor of a signal processing device and includes: generating a fundamental matrix according to at least one set of fundamental coefficients; generating a phase-shifted matrix according to a predetermined phase shift and the fundamental matrix; and generating an output sequence according to an input sequence and the phase-shifted matrix. The set of fundamental coefficients is used to generate at least one bit of a code sequence, the output sequence is a phase-shifted version of the input sequence being shifted by k cycle(s), and k is the predetermined phase shift.

2. 发明申请

US20220069856A1 METHOD AND APPARATUS FOR REDUCED SIZE RF FILTER 有权
公开(公告)号：US20220069856A1
公开(公告)日：2022-03-03
申请号：US17139947
申请日：2020-12-31
申请人： Samsung Electronics Co., Ltd.
发明人： Michael Chen , Khurram Muhammad , Xinguang Xu
IPC分类号： H04B1/12 , H03H17/00 , H03H17/02 , H03H17/08
摘要： A radio frequency (RF) unit and a method for RF isolation. The RF unit includes first and second RF couplers, an RF filter, and an RF canceler connected in parallel with the RF filter. The first RF coupler is configured to receive an input signal. The RF filter is configured to receive a first portion of the input signal from the first RF coupler and attenuate frequencies outside of a passband of the RF filter from the first portion of the input signal. The RF canceler is configured to receive a second portion of the input signal from the first RF coupler and generate a cancellation signal from the second portion of the input signal based on a target frequency band of the RF canceler. The second RF coupler is configured to combine the cancellation signal with an output of the RF filter to generate an output signal.

3. 发明申请

US20210135656A1 Low Loss Reflective Passive Phase Shifter using Time Delay Element with Double Resolution 有权
公开(公告)号：US20210135656A1
公开(公告)日：2021-05-06
申请号：US17094654
申请日：2020-11-10
申请人： pSemi Corporation
发明人： John Birkbeck , Vikas Sharma , Kashish Pal , Mark James O'Leary
IPC分类号： H03H11/20 , H03H11/26 , H03H17/08 , H03H17/00
摘要： A phase shifter for altering the phase of a radio frequency signal is disclosed herein. A Lange coupler is used having reflective ports that are coupled to artificial transmission lines. The artificial transmission lines provide a reflection transmission path, the length of which can be determined by digital control lines. Transistors placed along the length of the central trace provide independent paths to ground that serve to shorten the electrical length of the ATL. Accordingly, by selectively turning the transistors on/off, the electrical length of the ATL can be selected and thus the amount of phase delay introduced by the phase shifter.

4. 发明授权

US10362396B2 Phase control signal generation device, phase control signal generation method, and phase control signal generation program 有权
公开(公告)号：US10362396B2
公开(公告)日：2019-07-23
申请号：US15551752
申请日：2016-02-16
申请人： Clarion Co., Ltd.
发明人： Takeshi Hashimoto , Tetsuo Watanabe , Hideyuki Morita , Takatomi Kumagai , Yasuhiro Fujita , Kazutomo Fukue
IPC分类号： H04R3/00 , H04R3/04 , H04R3/14 , H04S1/00 , H04S3/00 , H04S5/02 , H03H17/00 , H03H17/02 , H03H17/08
摘要： A phase control signal generation device generating a phase control signal for each of frequency bands for an audio signal converted into a frequency domain, the phase control signal generation device comprising: a setting change means that is able to change setting of a propagation delay time for each of predetermined frequency bands; a difference obtaining means that obtains a difference between propagation delay times before and after setting change; an updating means that updates a phase control amount of the frequency band for which the propagation delay time is changed, based on the obtained difference; and a phase control signal generating means that generates a phase control signal of each frequency band by performing a smoothing process for the phase control amount in a frequency domain using the updated phase control amount.

5. 发明授权

US10305675B2 Data phase tracking device, data phase tracking method and communication device 有权
公开(公告)号：US10305675B2
公开(公告)日：2019-05-28
申请号：US15568696
申请日：2017-01-16
申请人： NTT ELECTRONICS CORPORATION , NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Yasuharu Onuma , Masahiro Tachibana , Etsushi Yamazaki , Kazuhito Takei , Yuki Yoshida , Masayuki Ikeda , Yoshiaki Kisaka , Masahito Tomizawa
IPC分类号： H04L7/00 , H04B1/16 , H04L7/033 , H03H17/06 , H03H17/00 , H03H17/08
摘要： An FIR filter convolutes sampled data obtained by sampling a reception signal with tap coefficients. A phase difference detector detects a phase difference between a synchronization timing of a signal waveform estimated from an output signal of the FIR filter and a sampling timing of the output signal. A tap coefficient adjuster adjusts the tap coefficients so as to reduce the phase difference detected by the phase difference detector and causes the sampling timing of the output signal of the FIR filter to track the synchronization timing.

6. 发明授权

US10069482B2 Delay line 有权
公开(公告)号：US10069482B2
公开(公告)日：2018-09-04
申请号：US15275018
申请日：2016-09-23
申请人： Perceptia Devices, Inc.
发明人： Julian Jenkins
IPC分类号： G06F17/10 , G06G7/02 , H03H17/02 , H03H17/00 , H03H17/08
摘要： A delay line is constructed by combining a phase generator and a fabric. The phase generator splits a digital input signal in multiple incrementally delayed versions, which are input to the fabric. The fabric has an array of node filters. Inputs of filters in the first array column are inputs of the fabric. A node filter has a delay element and a cross-coupling element, whose output signals are added or subtracted to form a filter output signal. A node filter in a row is concatenated to the previous filter in the row through its delay element. Inputs of cross-coupling elements are connected to other array rows. Outputs of node filters form the outputs of the fabric. Delay times of delay elements and cross-coupling elements are nominally equal. Drive strengths of cross-coupling elements may be lower than drive strengths of delay elements.

7. 发明授权

US09608599B2 Circuit for detecting phase shift applied to an RF signal 有权
公开(公告)号：US09608599B2
公开(公告)日：2017-03-28
申请号：US14798933
申请日：2015-07-14
申请人： NXP B.V.
发明人： Jean-Robert Tourret
IPC分类号： H03H17/08 , H03D13/00 , H05B6/68 , H05B6/70 , H05B6/72
CPC分类号： H03H17/08 , H03D13/00 , H05B6/686 , H05B6/705 , H05B6/72 , Y02B40/143 , Y02B40/146
摘要： An RF circuit and method for detecting the amount of phase shift applied to an RF signal. An RF heating apparatus including the RF circuit. The RF circuit includes a phase shifter operable to apply a phase shift to a reference signal to produce a phase shifted reference signal. The RF circuit also includes a phase detector operable to detect a phase difference between the phase shifted RF signal and the phase shifted reference signal. The phase detector has a reduced input range at a frequency of the phase shifted RF signal. The RF circuit further includes a controller operable to control the phase shifter to set the phase of the phase shifted reference signal so that the phase difference between the phase shifted RF signal and the phase shifted reference signal falls within the reduced input range of the phase detector.

8. 发明授权

US09344060B2 Signal-alignment circuitry and methods 有权
标题翻译：信号对齐电路和方法
公开(公告)号：US09344060B2
公开(公告)日：2016-05-17
申请号：US14473630
申请日：2014-08-29
申请人： SOCIONEXT INC.
发明人： Ian Juso Dedic , Gavin Lambertus Allen
IPC分类号： H03K5/13 , H03H17/08 , H03M1/06 , G06F1/04 , H03B27/00 , H03K5/15 , H03K5/135 , G06F1/12
CPC分类号： H03H17/08 , G06F1/04 , G06F1/12 , H03B27/00 , H03H2218/04 , H03H2218/12 , H03K5/135 , H03K5/1502 , H03M1/0624
摘要： Signal-alignment circuitry, comprising: phase-rotation circuitry connected to receive one or more input clock signals and operable to generate therefrom one or more output clock signals; and control circuitry operable to control the amount of phase rotation applied by the phase-rotation circuitry to carry out a plurality of alignment operations, the alignment operations comprising: one or more first operations each comprising rotating one or more of said output clock signals relative to one or more of the other said output clock signals, to bring a phase relationship between said output clock signals, or clock signals derived therefrom, towards or into a given phase relationship; and one or more second operations each comprising rotating all of said output clock signals together, to bring a phase relationship between said output or derived clock signals and said input clock signals or an external-reference signal towards or into a given phase relationship.
摘要翻译：信号对准电路，包括：相位旋转电路，被连接以接收一个或多个输入时钟信号并且可操作以从其产生一个或多个输出时钟信号; 以及控制电路，其可操作以控制由所述相位旋转电路施加的相位旋转量以执行多个对准操作，所述对准操作包括：一个或多个第一操作，每个包括使所述输出时钟信号中的一个或多个相对于一个或多个其它所述输出时钟信号，以使所述输出时钟信号之间的相位关系或从其导出的时钟信号朝给定的相位关系; 以及一个或多个第二操作，每个包括将所有所述输出时钟信号全部旋转在一起，以使得所述输出或导出的时钟信号与所述输入时钟信号之间的相位关系或向给定相位关系的外部参考信号。

9. 发明申请

US20150070065A1 SIGNAL-ALIGNMENT CIRCUITRY AND METHODS 有权
标题翻译：信号对准电路和方法
公开(公告)号：US20150070065A1
公开(公告)日：2015-03-12
申请号：US14473630
申请日：2014-08-29
申请人： FUJITSU SEMICONDUCTOR LIMITED
发明人： Ian Juso DEDIC , Gavin Lambertus ALLEN
IPC分类号： H03H17/08 , H03M1/06
CPC分类号： H03H17/08 , G06F1/04 , G06F1/12 , H03B27/00 , H03H2218/04 , H03H2218/12 , H03K5/135 , H03K5/1502 , H03M1/0624
摘要： Signal-alignment circuitry, comprising: phase-rotation circuitry connected to receive one or more input clock signals and operable to generate therefrom one or more output clock signals; and control circuitry operable to control the amount of phase rotation applied by the phase-rotation circuitry to carry out a plurality of alignment operations, the alignment operations comprising: one or more first operations each comprising rotating one or more of said output clock signals relative to one or more of the other said output clock signals, to bring a phase relationship between said output clock signals, or clock signals derived therefrom, towards or into a given phase relationship; and one or more second operations each comprising rotating all of said output clock signals together, to bring a phase relationship between said output or derived clock signals and said input clock signals or an external-reference signal towards or into a given phase relationship.
摘要翻译：信号对准电路，包括：相位旋转电路，被连接以接收一个或多个输入时钟信号并且可操作以从其产生一个或多个输出时钟信号; 以及控制电路，其可操作以控制由所述相位旋转电路施加的相位旋转量以执行多个对准操作，所述对准操作包括：一个或多个第一操作，每个包括使所述输出时钟信号中的一个或多个相对于一个或多个其它所述输出时钟信号，以使所述输出时钟信号之间的相位关系或从其导出的时钟信号朝给定的相位关系; 以及一个或多个第二操作，每个包括将所有所述输出时钟信号全部旋转在一起，以使得所述输出或导出的时钟信号与所述输入时钟信号之间的相位关系或向给定相位关系的外部参考信号。

10. 发明申请

US20110150495A1 VECTOR SUM PHASE SHIFTER, OPTICAL TRANSCEIVER, AND CONTROL CIRCUIT 有权
标题翻译：矢量相移相机，光收发器和控制电路
公开(公告)号：US20110150495A1
公开(公告)日：2011-06-23
申请号：US13059226
申请日：2009-08-12
申请人： Hideyuki Nosaka , Munehiko Nagatani , Shogo Yamanaka , Kimikazu Sano , Koichi Murata , Kiyomitsu Oncodera , Takatomo Enoki
发明人： Hideyuki Nosaka , Munehiko Nagatani , Shogo Yamanaka , Kimikazu Sano , Koichi Murata , Kiyomitsu Oncodera , Takatomo Enoki
IPC分类号： H04B10/00 , H03H17/08
CPC分类号： H03H11/20 , H03H2007/0192 , H03H2011/0494 , H04B10/505 , H04B2210/517
摘要： A vector sum phase shifter includes a 90° phase shifter (1) which generates an in-phase signal (VINI) and a quadrature signal (VINQ) from an input signal (VIN), a four-quadrant multiplier (2I) which changes the amplitude of the in-phase signal (VINI) based on a control signal (CI), a four-quadrant multiplier (2Q) which changes the amplitude of the quadrature signal (VINQ) based on a control signal (CQ), a combiner (3) which combines the in-phase signal (VINI) and the quadrature signal (VINQ), and a control circuit (4). The control circuit (4) includes a voltage generator which generates a reference voltage, and a differential amplifier which outputs the difference signal between a control voltage (VC) and the reference voltage as the control signal (CI, CQ). The differential amplifier performs an analog operation of converting the control voltage (VC) into the control signal (CI, CQ) similar to a sine wave or a cosine wave.
摘要翻译：矢量和移相器包括从输入信号（VIN）产生同相信号（VINI）和正交信号（VINQ）的90°移相器（1），四象限乘法器（2I），其改变基于控制信号（CI）的同相信号（VINI）的幅度，基于控制信号（CQ）改变正交信号（VINQ）的幅度的四象限乘法器（2Q），组合器 3），其组合了同相信号（VINI）和正交信号（VINQ），以及控制电路（4）。控制电路（4）包括产生参考电压的电压发生器和输出控制电压（VC）和基准电压之间的差分信号作为控制信号（CI，CQ）的差分放大器。差分放大器进行与正弦波或余弦波相似的将控制电压（VC）转换为控制信号（CI，CQ）的模拟操作。

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