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1. 发明授权

US11316473B2 Oscillator circuit, device, and method 有权
公开(公告)号：US11316473B2
公开(公告)日：2022-04-26
申请号：US17173743
申请日：2021-02-11
申请人： TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
发明人： Chi-Hsien Lin , Ho-Hsiang Chen , Hsien-Yuan Liao , Tzu-Jin Yeh , Ying-Ta Lu
IPC分类号： H03B5/12 , H03B1/04 , H03H7/01
摘要： A band-pass filter (BPF) includes a pair of coupled transformers including first through fourth conductive structures. The first conductive structure includes a first terminal and two first extending portions extending from the first terminal and configured as primary windings. The second conductive structure includes a second terminal and two second extending portions extending from the second terminal. A first via connects the third conductive structure to a first one of the two second extending portions, the third conductive structure and the first one of the two second extending portions thereby being configured as a first secondary winding. A second via connects the fourth conductive structure to a second one of the two second extending portions, the fourth conductive structure and the second one of the two second extending portions thereby being configured as a second secondary winding.

2. 发明授权

US11131763B2 Phase preset for fast chirp PLL 有权
公开(公告)号：US11131763B2
公开(公告)日：2021-09-28
申请号：US16426638
申请日：2019-05-30
申请人： NXP USA, INC.
发明人： Jean-Stephane Vigier , Didier Salle , Cristian Pavao-Moreira , Julien Orlando
IPC分类号： G01S13/34 , G01S7/35 , H03B1/04 , H03L7/087 , H03L7/18 , H03C3/09 , G01S7/40
摘要： A fast chirp Phase Locked Loop with a phase preset includes a Voltage Controlled Oscillator, VCO, generating a Frequency Modulated Continuous Waveform, FMCW. The VCO responds to a filtered output voltage of a filter connected to a charge pump. A digital controller modifies the FMCW to generate a chirp phase and a return phase. The chirp phase includes a first linear change of the FMCW from a start frequency to a stop frequency. The return phase includes a second linear change of the FMCW from the stop frequency to the start frequency. A phase preset circuit connects to the digital controller and the filter. The phase preset circuit supplies a phase preset current during a start frequency time preceding the chirp phase. The phase preset current is proportional to a VCO gain of the VCO and inversely proportional to a chirp current during the chirp phase.

3. 发明授权

US10663559B2 Radar transceiver with phase noise cancellation 有权
公开(公告)号：US10663559B2
公开(公告)日：2020-05-26
申请号：US15726433
申请日：2017-10-06
申请人： Infineon Technologies AG
发明人： Mario Huemer , Alexander Melzer , Alexander Onic , Rainer Stuhlberger
IPC分类号： G01S7/28 , G01S13/34 , G01S7/03 , G01S7/35 , G01S7/40 , H03B1/04 , G01S13/931 , G01S7/02
摘要： A method for cancelling phase noise in a radar signal is described herein. In accordance with one embodiment, the method includes transmitting an RF oscillator signal, which represents a local oscillator signal including phase noise, to a radar channel and receiving a respective first RF radar signal from the radar channel. The first RF radar signal included at least one radar echo of the transmitted RF oscillator signal. Further, the method includes applying the RF oscillator signal to an artificial radar target composed of circuitry, which applies a delay and a gain to the RF oscillator signal, to generate a second RF radar signal. The second RF radar signal is modulated by a modulation signal thus generating a frequency-shifted RF radar signal. Further, the method includes subtracting the frequency-shifted RF radar signal from the first RF radar signal.

4. 发明申请

US20190305724A1 SENSOR COMMUNICATION CONTROL CONSIDERING EMC COMPLIANCE FOR RESTRAINT CONTROL MODULE 审中-公开
公开(公告)号：US20190305724A1
公开(公告)日：2019-10-03
申请号：US15940547
申请日：2018-03-29
申请人： Autoliv ASP, Inc.
发明人： Vincent Colarossi , Peter Kowalczyk
IPC分类号： H03B1/04 , B60R16/023 , H04W56/00
摘要： A restraint control module is configured to communicate a sync pulse to a sensor. The control module includes a first sync pulse driver and a second sync pulse driver. The first sync pulse driver is connected to a first signal line and the second sync pulse driver connected to a second signal line. The first and second sync pulse drivers being configured to generate a differential sync pulse signal across the first signal line and second signal line using a first signal on the first signal line and a second signal on the second signal line.

5. 发明授权

US10270388B2 Voltage-controlled oscillator and phase locked loop circuit with such voltage-controlled oscillator 有权
公开(公告)号：US10270388B2
公开(公告)日：2019-04-23
申请号：US15700599
申请日：2017-09-11
申请人： Kabushiki Kaisha Toshiba
发明人： Hiroaki Hoshino
IPC分类号： H03L7/00 , H03B5/08 , H03B1/04 , H03L7/099 , H03L7/089 , H03B5/04 , H03B5/12 , H03L7/093 , H03L7/18
摘要： According to an embodiment, a voltage-controlled oscillator has a variable capacitive element with a capacitance that is changed by a voltage to be applied thereto. One electrode of the variable capacitive element is connected to a control input terminal where a control voltage that controls an oscillation frequency is applied thereto. It has a compensation voltage generation circuit that generates a voltage that changes with a temperature thereof. It has a resistive element with one end that is directly connected to another electrode of the variable capacitive element and another end that is supplied with an output voltage of the compensation voltage generation circuit.

6. 发明申请

US20180175792A1 RADIO FREQUENCY (RF) DEVICES WITH RESONANT CIRCUITS TO REDUCE COUPLING 审中-公开
公开(公告)号：US20180175792A1
公开(公告)日：2018-06-21
申请号：US15383775
申请日：2016-12-19
申请人： NXP USA, INC.
发明人： NICK YANG
IPC分类号： H03B1/04 , H03F3/19 , H03F3/21 , H03F1/02 , H01L23/498 , H03B5/08 , H01L23/66
CPC分类号： H01L23/66 , H01L23/49838 , H01L2223/6666 , H03B5/08 , H03F1/0288 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/114 , H03F2200/451
摘要： The embodiments described herein use resonant circuits to provide isolation between closely proximate conductors. For example, these resonant circuits can be used to reduce unwanted electromagnetic coupling and minimize crosstalk energy between package leads, bonding wires, and circuit board traces on radio frequency (RF) electronic devices, including RF power amplifiers. To facilitate a reduction in electromagnetic coupling, the resonant circuit is configured resonate with the closely proximate conductors at a selected frequency f0, and when resonating at the selected frequency f0 the resonant circuit provides a path to ground for the crosstalk energy. This path to ground reduces the crosstalk energy that would otherwise be shared between the two closely proximate conductors, and thus provides the electromagnetic isolation between the conductors.

7. 发明申请

US20180097475A1 METHOD AND APPARATUS FOR RECONFIGURABLE MULTICORE OSCILLATOR 审中-公开
公开(公告)号：US20180097475A1
公开(公告)日：2018-04-05
申请号：US15718460
申请日：2017-09-28
申请人： MICROSEMI STORAGE SOLUTIONS, INC.
发明人： Hormoz DJAHANSHAHI , Srinivasa Rao MADALA
IPC分类号： H03B1/04 , H03B5/12 , H03B27/00
CPC分类号： H03B1/04 , H03B5/12 , H03B5/1215 , H03B27/00 , H03B2200/0076 , H03B2200/009 , H03B2202/04
摘要： The present disclosure relates to a reconfigurable multicore inductor capacitor (LC) oscillator comprising a plurality of oscillator cores. The oscillator may be configured at run-time, at manufacturing, or at production, which may allow for the tailoring of operating characteristics of the oscillator, such as phase noise, electromagnetic interference, or power consumption, for a specific application after production. The cores are coupled through an interconnect network to a common electrical signal output. A subset of the cores may be selectively enabled while the remainder of the cores is disabled. The ability to enable only a subset of the cores allows the total number of enabled cores to be reconfigurable. Furthermore, the direction in which oscillation current flows through the inductor of the cores may be configured. Reconfiguring the number of enabled cores and/or the oscillation current direction in the cores allow operating characteristics of the oscillator to be tailored after production.

8. 发明申请

US20180091095A1 PULLABLE CLOCK OSCILLATOR 审中-公开
公开(公告)号：US20180091095A1
公开(公告)日：2018-03-29
申请号：US15719540
申请日：2017-09-28
申请人： TEXAS INSTRUMENTS INCORPORATED
发明人： Ben-yong Zhang , Seong-Ryong Ryu , Ali Kiaei , Ting-Ta Yen , Kai Yiu Tam
IPC分类号： H03B1/04 , H03B5/32 , H03B1/02
CPC分类号： H03B1/04 , H03B1/02 , H03B5/326 , H03B5/368 , H03B2200/004 , H03B2200/009 , H03L7/0891 , H03L7/093 , H03L7/099
摘要： A clock oscillator includes with a pullable BAW oscillator to generate an output signal with a target frequency. The BAW oscillator is based on a BAW resonator and voltage-controlled variable load capacitance, responsive to a capacitance control signal to provide a selectable load capacitance. An oscillator driver (such as a differential negative gm transconductance amplifier), is coupled to the BAW oscillator to provide an oscillation drive signal. The BAW oscillator is responsive to the oscillation drive signal to generate the output signal with a frequency based on the selectable load capacitance. The oscillator driver can include a bandpass filter network with a resonance frequency substantially at the target frequency.

9. 发明申请

US20170070192A1 APPARATUS AND METHODS FOR REDUCING SUPPLY NOISE CONVERSION TO PHASE NOISE 审中-公开
标题翻译：用于减少供应噪声转换为相位噪声的装置和方法
公开(公告)号：US20170070192A1
公开(公告)日：2017-03-09
申请号：US15143951
申请日：2016-05-02
申请人： Analog Devices, Inc.
发明人： Andrey Martchovsky , Roger Van Brunt
IPC分类号： H03B1/04 , H03L7/18 , H03L7/099 , H03L7/089 , H03B5/04 , H03B5/12
CPC分类号： H03B1/04 , H03B5/04 , H03B5/1212 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B2200/009 , H03L7/0891 , H03L7/093 , H03L7/099 , H03L7/18
摘要： Provided herein are apparatus and methods for reducing supply noise conversion to phase noise. In certain configurations, voltage controlled elements such as varactors are used to control a VCO output frequency. A VCO transfer function relating supply voltage noise to a common node of a varactor gives rise to a transfer function of value a representing a push coefficient. An intentional amount of supply noise can be added to a tuning voltage by injecting it at a tuning port of the VCO. By splitting an integration capacitance in a loop filter, an integration capacitance can be divided among a capacitor divider to create a transfer function of value β representing a compensating coefficient. The injected noise from the capacitor divider can reduce VCO pushing by canceling the value α. When the value β is set equal to the value α, the VCO pushing can be reduced to within the estimation or measurement accuracy of the value α.
摘要翻译：本文提供了用于将电源噪声转换降为相位噪声的装置和方法。在某些配置中，使用诸如变容二极管的电压控制元件来控制VCO输出频率。将电源电压噪声与变容二极管的公共节点相关联的VCO传递函数产生表示推力系数的值a的传递函数。可以通过将其注入VCO的调谐端口将有意量的电源噪声添加到调谐电压。通过在环路滤波器中分离积分电容，积分电容可以分为电容分压器，以产生表示补偿系数的值β的传递函数。来自电容分压器的注入噪声可以通过消除值α来减小VCO推送。当将值β设定为等于值α时，可以将VCO按压减小到值α的估计或测量精度。

10. 发明授权

US09490830B2 Method and apparatus for synthesis of wideband low phase noise radio frequency signals 有权
标题翻译：用于合成宽带低相位噪声射频信号的方法和装置
公开(公告)号：US09490830B2
公开(公告)日：2016-11-08
申请号：US14147723
申请日：2014-01-06
申请人： Star Dynamics Corporation
发明人： Paul Douglas Stoner
IPC分类号： H03B21/00 , H03L7/18 , H03B1/04
CPC分类号： H03L7/18 , H03B1/04 , H03L7/0812 , H03L7/0818 , H03L7/16
摘要： An apparatus for synthesizing wideband radio frequency signals in the microwave region has mostly digital components. The apparatus processes and converts a signal from a stable single-frequency electrical oscillator into a lower or higher frequency electrical signal without using analog multiplier or mixer circuits. An apparatus for synthesizing a fixed phase-stable RF reference signal for use in a radar transceiver includes a phase-stable electrical oscillator which produces a single frequency sinusoidal reference signal. The apparatus converts the reference signal to an arbitrary higher or lower fixed frequency using digital logic and signal delays. The apparatus comprises low-jitter comparator, an impulse former, a gearbox retiming circuit and a recirculator circuit. An apparatus for providing wideband FM modulation of an RF signal includes circuitry for synthesizing a radio frequency signal having arbitrary tuning of center frequency and dynamic command of wideband FM and retaining low phase noise performance of the synthesized signal.
摘要翻译：用于在微波区域中合成宽带射频信号的装置主要是数字分量。该装置在不使用模拟乘法器或混频器电路的情况下处理和将来自稳定单频电振荡器的信号转换成较低或更高频率的电信号。用于合成用于雷达收发器的固定相位稳定RF参考信号的装置包括产生单频正弦参考信号的相位稳定电振荡器。该装置使用数字逻辑和信号延迟将参考信号转换成任意更高或更低的固定频率。该装置包括低抖动比较器，脉冲成形器，齿轮箱重新定时电路和再循环电路。用于提供RF信号的宽带FM调制的装置包括用于合成具有中心频率的任意调谐和宽带FM的动态命令的射频信号并保持合成信号的低相位噪声性能的电路。

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