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1. 发明授权

US09742352B2 Voltage-controlled oscillator 有权
公开(公告)号：US09742352B2
公开(公告)日：2017-08-22
申请号：US15340558
申请日：2016-11-01
申请人： National Chi Nan University
发明人： Yo-Sheng Lin , Wei-Cheng Wen
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/124 , H03B5/1243 , H03B5/1293 , H03B2200/0034
摘要： A voltage-controlled oscillator includes two first inductors having a common node, two varactors respectively coupled to the first inductors, a cross-connected pair coupled to the first inductors, and a reversely tunable source degeneration module coupled to the cross-connected pair. The reversely tunable source degeneration module cooperates with the cross-connected pair to form a negative equivalent capacitance seen into the cross-connected pair from the common node of cross-connected pair and each first inductor. An oscillatory signal pair is provided at the first terminals of the first and second transistors.

2. 发明授权

US09660578B2 Electronic device with capacitor bank linearization and a linearization method 有权
公开(公告)号：US09660578B2
公开(公告)日：2017-05-23
申请号：US14991043
申请日：2016-01-08
申请人： FREESCALE SEMICONDUCTOR, INC.
发明人： Cristian Pavao-Moreira , Olivier Vincent Doare , Birama Goumballa , Didier Salle
IPC分类号： H03B5/08 , H03B5/12 , H03L7/099 , H01G15/00
CPC分类号： H03B5/1265 , H01G15/00 , H03B5/1212 , H03B5/1215 , H03B5/1228 , H03B5/1293 , H03L7/099
摘要： An electronic device comprises a controllable capacitor bank and a capacitive divider arranged in parallel with the capacitor bank and configured to linearize the capacitor bank in a linearization frequency range of a frequency characteristic of the electronic device. The capacitive divider comprises a series arrangement of a first series capacitance, and a main capacitor bank. A control circuit coupled to one or more control inputs of the capacitive divider and controllable capacitor bank is configured to modify the equivalent capacitance of the capacitive divider and the controllable capacitor bank for providing capacitance steps, each capacitance step being variable over frequency such that for each step a frequency change Δf of the frequency characteristic is maintained constant in the linearization frequency range.

3. 发明申请

US20170093409A1 SYSTEM AND METHOD FOR VOLTAGE-CONTROLLED OSCILLATOR CALIBRATION 有权
公开(公告)号：US20170093409A1
公开(公告)日：2017-03-30
申请号：US15234743
申请日：2016-08-11
申请人： MAXLINEAR ASIA SINGAPORE PTE LTD.
发明人： Hormoz DJAHANSHAHI , Masoud GHOREISHI MADISEH
IPC分类号： H03L7/099 , H03L7/091 , H03L3/00 , H03L7/089 , H03L7/093
CPC分类号： H03L7/099 , H03B1/00 , H03B5/04 , H03B5/08 , H03B5/1212 , H03B5/124 , H03B5/1243 , H03B5/1265 , H03B5/1293 , H03L1/026 , H03L7/087 , H03L7/113 , H03L7/18
摘要： A system and method for calibrating a Voltage-Controlled Oscillator (VCO) having both fine-tuning control and coarse-tuning control. The VCO frequency can vary monotonically with changes in each of one or more operational conditions. The calibration method determines the coarse-tuning control setting for the VCO at system start-up. The method comprises generating frequency characterization data, generating a polynomial function from the characterization data, calculating the fine-tuning control voltage based on the polynomial function and a measurement of the operational conditions, and sweeping through all the coarse-tuning control settings to determine the coarse-tuning control setting that generates the closest VCO frequency to a target frequency when using the calculated fine-tuning control voltage.

4. 发明授权

US09608647B1 System and method for voltage-controlled oscillator calibration 有权
公开(公告)号：US09608647B1
公开(公告)日：2017-03-28
申请号：US15234743
申请日：2016-08-11
申请人： MAXLINEAR ASIA SINGAPORE PTE LTD.
发明人： Hormoz Djahanshahi , Masoud Ghoreishi Madiseh
IPC分类号： H03L1/00 , H03L7/099 , H03L7/089 , H03L7/093 , H03L3/00 , H03L7/091 , H03B1/00 , H03L1/02 , H03B5/12 , H03B5/08
CPC分类号： H03L7/099 , H03B1/00 , H03B5/04 , H03B5/08 , H03B5/1212 , H03B5/124 , H03B5/1243 , H03B5/1265 , H03B5/1293 , H03L1/026 , H03L7/087 , H03L7/113 , H03L7/18
摘要： A system and method for calibrating a Voltage-Controlled Oscillator (VCO) having both fine-tuning control and coarse-tuning control. The VCO frequency can vary monotonically with changes in each of one or more operational conditions. The calibration method determines the coarse-tuning control setting for the VCO at system start-up. The method comprises generating frequency characterization data, generating a polynomial function from the characterization data, calculating the fine-tuning control voltage based on the polynomial function and a measurement of the operational conditions, and sweeping through all the coarse-tuning control settings to determine the coarse-tuning control setting that generates the closest VCO frequency to a target frequency when using the calculated fine-tuning control voltage.

5. 发明申请

US20160099679A1 Switching Current Source Radio Frequency Oscillator 有权
标题翻译：开关电流源射频振荡器
公开(公告)号：US20160099679A1
公开(公告)日：2016-04-07
申请号：US14874401
申请日：2015-10-03
申请人： Masoud Babaie , Robert Bogdan Staszewski
发明人： Masoud Babaie , Robert Bogdan Staszewski
IPC分类号： H03B5/12
CPC分类号： H03B5/1212 , H03B5/1215 , H03B5/1218 , H03B5/1228 , H03B5/124 , H03B5/1265 , H03B5/1281 , H03B5/1293 , H03B5/1296 , H03J2200/10 , H03L7/081 , H03L7/0991 , H03L7/1976
摘要： A novel and useful RF oscillator suitable for use in applications requiring ultra-low voltage and power. The oscillator structure, employing alternating current source transistors, combines the benefits of low supply voltage operation of conventional NMOS cross-coupled oscillators together with high current efficiency of the complementary push-pull oscillators. In addition, the 1/f noise upconversion is also reduced. The oscillator can be incorporated within a wide range of circuit applications, including for example a conventional phase locked loop (PLL), all-digital phase-locked loop (ADPLL), wireline transceiver circuits and mobile devices.
摘要翻译：一种新颖有用的RF振荡器，适用于需要超低电压和功率的应用。采用交流电源晶体管的振荡器结构将常规NMOS交叉耦合振荡器的低电源电压工作的优点与互补推挽式振荡器的高电流效率相结合。此外，1 / f噪声上变频也降低。振荡器可以并入广泛的电路应用中，包括例如常规的锁相环（PLL），全数字锁相环（ADPLL），有线收发器电路和移动设备。

6. 发明授权

US08169270B2 Overlapping, two-segment capacitor bank for VCO frequency tuning 有权
标题翻译：重叠，两段电容器组用于VCO频率调谐
公开(公告)号：US08169270B2
公开(公告)日：2012-05-01
申请号：US12437462
申请日：2009-05-07
申请人： Yi Zeng , Tzu-wang Pan , I-Hsiang Lin
发明人： Yi Zeng , Tzu-wang Pan , I-Hsiang Lin
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1212 , H03B5/1253 , H03B5/1265 , H03B5/1293
摘要： A VCO (for example, in an FM receiver) includes an LC resonant tank. The LC resonant tank includes a coarse tuning capacitor bank and a fine tuning capacitor bank. The coarse tuning capacitor bank contains a plurality of digitally controlled coarse tuning capacitor elements, each providing a first capacitance value when active. The fine tuning capacitor bank contains a plurality of digitally controlled fine tuning capacitor elements, each providing a second capacitance value when active. To address the practical problem of capacitor mismatch, capacitance overlap throughout the VCO tuning range is created by selecting the first and second capacitance values such that the capacitance value of the fine capacitor bank is greater than the first capacitance value when all of the digitally controlled fine tuning capacitor elements of the fine capacitor bank are active.
摘要翻译： VCO（例如，在FM接收机中）包括LC谐振回路。 LC谐振槽包括一个粗调谐电容器组和一个微调电容器组。粗调谐电容器组包含多个数字控制的粗调电容器元件，每个主调制电容器元件在有源时提供第一电容值。微调电容器组包含多个数字控制的微调电容器元件，每个微调电容器元件在有源时提供第二电容值。为了解决电容器失配的实际问题，通过选择第一和第二电容值来创建整个VCO调谐范围内的电容重叠，使得当全部数字控制的精细时，精细电容器组的电容值大于第一电容值精细电容器组的调谐电容器元件是有效的。

7. 发明申请

US20110128080A1 VOLTAGE CONTROLLED OSCILLATOR (VCO) CIRCUIT WITH INTEGRATED COMPENSATION OF THERMALLY CAUSED FREQUENCY DRIFT 有权
标题翻译：电压控制振荡器（VCO）电路，具有综合补偿热引起的频率DRIFT
公开(公告)号：US20110128080A1
公开(公告)日：2011-06-02
申请号：US12997102
申请日：2008-06-26
申请人： Peter Wennekers , Hao Li , Yi Yin
发明人： Peter Wennekers , Hao Li , Yi Yin
IPC分类号： H03L7/00
CPC分类号： H03B5/04 , H03B5/1218 , H03B5/1231 , H03B5/1243 , H03B5/1293 , H03L1/023 , H03L7/099 , H03L7/18
摘要： A voltage controlled oscillator circuit comprises a VCO resonator circuit having a first plurality of varactors for varying a frequency of the VCO resonator circuit the VCO resonator circuit being symmetrical with respect to VCO circuit ground and providing a signal having a frequency, the frequency depending on a tuning voltage applied to the first plurality of varactors, and a second plurality of varactors for compensating a drift of the frequency depending on a compensation voltage, a temperature sensor circuit sensing an ambient temperature of the VCO resonator circuit and providing a temperature dependent signal, and a temperature compensation circuit providing the compensation voltage depending on the temperature dependent signal. Furthermore, a phase locked loop (PLL) circuit, an automotive radar device and a method for compensating a frequency drift of a VCO resonator circuit are presented.
摘要翻译：压控振荡器电路包括具有第一多个变容二极管的VCO谐振电路，所述变容二极管用于改变所述VCO谐振器电路的频率，所述VCO谐振器电路相对于VCO电路接地是对称的，并提供具有频率的信号，所述频率取决于施加到第一组多个变容二极管的调谐电压，以及第二组多个变容二极管，用于根据补偿电压补偿频率的漂移;感测VCO谐振电路的环境温度并提供与温度相关的信号的温度传感器电路;以及温度补偿电路，其根据温度依赖信号提供补偿电压。此外，提出了锁相环（PLL）电路，汽车雷达装置和用于补偿VCO谐振电路的频率漂移的方法。

8. 发明授权

US07915968B2 Digitally controlled oscillator (DCO) 有权
标题翻译：数字控制振荡器（DCO）
公开(公告)号：US07915968B2
公开(公告)日：2011-03-29
申请号：US12104494
申请日：2008-04-17
申请人： Tae-wook Kim , Choong-yul Cha , Jae-sup Lee , Kang-yoon Lee
发明人： Tae-wook Kim , Choong-yul Cha , Jae-sup Lee , Kang-yoon Lee
IPC分类号： H03B5/12
CPC分类号： H03B5/1228 , H03B5/1215 , H03B5/1253 , H03B5/1259 , H03B5/1271 , H03B5/1293
摘要： A digitally controlled oscillator (DCO) includes a current generator which generates an electric current having a magnitude corresponding to an input signal, and a digitally controlled oscillating unit which generates an oscillating frequency based on an inductance which varies according to the magnitude of the electric current generated by the current generator.
摘要翻译：数字控制振荡器（DCO）包括产生具有对应于输入信号的幅度的电流的电流发生器，以及数字控制的振荡单元，其基于根据电流的大小而变化的电感产生振荡频率由当前发电机产生。

9. 发明申请

US20100215123A1 WIDEBAND DIGITALLY-CONTROLLED OSCILLATOR (DCO) AND DIGITAL BROADCASTING RECEIVER HAVING THE SAME 有权
标题翻译：宽带数字控制振荡器（DCO）和数字广播接收机
公开(公告)号：US20100215123A1
公开(公告)日：2010-08-26
申请号：US12711414
申请日：2010-02-24
申请人： Li YANG , Hyun-koo KANG , Dae-yeon KIM , LuoSheng LI
发明人： Li YANG , Hyun-koo KANG , Dae-yeon KIM , LuoSheng LI
IPC分类号： H04L27/00 , H03B5/12
CPC分类号： H04L27/0014 , H03B5/1215 , H03B5/1225 , H03B5/1231 , H03B5/1265 , H03B5/1271 , H03B5/1278 , H03B5/129 , H03B5/1293 , H03L7/099 , H03L7/10 , H03L2207/06 , H04L2027/0016
摘要： A wideband digitally-controlled oscillator (DCO) is provided. The wideband DCO includes an active element which is driven by a first digital control signal; a single inductor which is connected to the active element in parallel, and comprises fixed inductance; and a plurality of capacitors which are connected to the single inductor in parallel, and vary operating frequency by being selectively turned on or off by a second digital control signal. Accordingly, the wideband DCO capable of operating in a wideband frequency range using a single inductor is provided, and if the wideband DCO is implemented using a single integrated circuit (IC) chip, the size of chip is reduced as the single inductor is used.
摘要翻译：提供宽带数字控制振荡器（DCO）。宽带DCO包括由第一数字控制信号驱动的有源元件; 单个电感器并联连接到有源元件，并包括固定电感; 以及并联连接到单个电感器的多个电容器，并且通过由第二数字控制信号选择性地导通或关断来改变工作频率。因此，提供能够使用单个电感器在宽带频率范围内工作的宽带DCO，并且如果使用单个集成电路（IC）芯片实现宽带DCO，则使用单个电感器来减小芯片的尺寸。

10. 发明授权

US07675376B2 Voltage-controlled oscillator 有权
标题翻译：压控振荡器
公开(公告)号：US07675376B2
公开(公告)日：2010-03-09
申请号：US11629531
申请日：2005-03-07
申请人： Masaomi Tsuru , Kenji Kawakami , Kenichi Tajima , Moriyasu Miyazaki , Kazuhiro Miyamoto , Masafumi Nakane
发明人： Masaomi Tsuru , Kenji Kawakami , Kenichi Tajima , Moriyasu Miyazaki , Kazuhiro Miyamoto , Masafumi Nakane
IPC分类号： H03B5/18
CPC分类号： H03H11/44 , H03B5/1203 , H03B5/1228 , H03B5/1231 , H03B5/1243 , H03B5/1293 , H03B2200/0042 , H03H11/28 , H03H11/481
摘要： A voltage-controlled oscillator has a tuned circuit for controlling the oscillation frequency. The tuned circuit has a variable-capacitance element whose capacitance varies in response to a control voltage and a negative capacitance circuit whose impedance frequency characteristics have opposite characteristics to those of a normal capacitance, and which is connected to the variable-capacitance element. The configuration enables increasing the variation ratio corresponding to the control voltage of the combined capacitance composed of the variable-capacitance element and negative capacitance circuit, thereby broadening the oscillation frequency band.
摘要翻译：压控振荡器具有用于控制振荡频率的调谐电路。调谐电路具有可变电容元件，其电容响应于阻抗频率特性与正常电容具有相反特性的控制电压和负电容电路而变化，并且连接到可变电容元件。该配置能够增加与由可变电容元件和负电容电路组成的组合电容的控制电压相对应的变化率，从而使振荡频带变宽。

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