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公开(公告)号：US10419008B2
公开(公告)日：2019-09-17
申请号：US15470375
申请日：2017-03-27
IPC分类号： H03L7/099 , H03B1/00 , H03L1/02 , H03B5/12 , H03B5/08 , H03B5/04 , H03L7/087 , H03L7/113 , H03L7/18
摘要： Methods and systems are provided for calibrating voltage-controlled oscillators (VCOs). frequency control information, relating to output frequency of a VCO, which varies based on changes in operational conditions, may be determined. The frequency control information enables indicating the output frequency within a range of allowable values for control inputs and a range of expected values based on the operational conditions. For each control input setting, calibration control information for a calibration voltage associated with a control input, may be determined, based on the frequency control information, with respect to the operational conditions, to generate a constant output frequency. The operational conditions may be assessed, and a calibration voltage corresponding to the assessed operational conditions may be determined. The calibration voltage may be applied, and based on applying the calibration voltage, a tuning control input for tuning the constant output frequency may be determined and applied to the VCO.
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公开(公告)号：US10284207B2
公开(公告)日：2019-05-07
申请号：US15812221
申请日：2017-11-14
摘要： Methods and systems are provided for adaptively configuring voltage-controlled oscillator (VCO) arrays, such as to reduce mismatches among the VCOs. A plurality of voltage-controlled oscillators (VCOs), connected in parallel to a common control input, and with each VCO outputting an oscillating signal based on the common control input and an adjustment input, may be configured to reduce mismatches among the VCOs. The plurality of VCO may be configured by adjusting at least one operational parameter applicable to interconnection paths connecting outputs of the plurality of VCOs; measuring a mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter; and adjusting a first operational parameter applicable to one or more of the plurality of VCOs to reduce mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter.
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公开(公告)号：US20170331482A1
公开(公告)日：2017-11-16
申请号：US15470375
申请日：2017-03-27
IPC分类号： H03L7/099 , H03L7/091 , H03L7/089 , H03L3/00 , H03L1/02 , H03B5/12 , H03B1/00 , H03B5/08 , H03B5/04 , 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 ail 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.
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公开(公告)号：US09787251B2
公开(公告)日：2017-10-10
申请号：US15231188
申请日：2016-08-08
发明人： Hormoz Djahanshahi , Su-Tarn Lim
CPC分类号： H03B5/326 , H03B5/06 , H03B5/30 , H03B5/36 , H03B5/364 , H03B2200/0034 , H03B2200/0046 , H03B2200/009 , H03B2200/0094 , H03L3/00
摘要： An oscillator and method for generating a signal are provided. The oscillator comprises an electro-mechanical resonator and a reconfigurable oscillator driver. The reconfigurable oscillator driver starts the oscillator in single-ended mode to avoid latching and transitions the oscillator to differential mode in such a manner as to sustain oscillations therein. The reconfigurable oscillator driver may comprise two back-to-back banks of inverters and an adjustable feedback resistor. In single-ended mode, one bank is disabled and the other bank is enabled. To transition to differential mode and improve the quality of the signal, the number of enabled inverters is equalized in both banks.
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公开(公告)号：US20190103837A1
公开(公告)日：2019-04-04
申请号：US16148588
申请日：2018-10-01
IPC分类号： H03B5/36
摘要： Method and systems are provided for voltage-controlling and tuning of oscillators. An example system may include a signal source that provides an input signal for generating oscillations and a frequency tuning network for tuning frequency of the oscillations. The frequency tuning network may include one or more input circuits configured for receiving the input signal from the signal source, and a plurality of capacitors. The frequency tuning network may be configured to tune the frequency of the oscillations by adjusting at least one parameter or function applicable to capacitance within the frequency tuning network and/or within other components of the system. The frequency tuning network may be configured to tune the frequency of the oscillations by adjusting amplifying of capacitance. Adjusting amplifying of capacitance in the system may include inhibiting amplifying of at least one capacitor within at least one other component of the system.
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公开(公告)号：US10090805B2
公开(公告)日：2018-10-02
申请号：US15346420
申请日：2016-11-08
IPC分类号： H03B5/36
摘要： Method and systems are provided for voltage-controlling and tuning of oscillators. An oscillator may comprise comprises an oscillator core configured for contributing gain to oscillations generated in the oscillator and a frequency tuning network connected between the oscillator core and a signal source that provides an input signal for creating the oscillations in the oscillator. The frequency tuning network may be configured for tuning frequency of the oscillations, to inhibit amplifying a first capacitance from the oscillator core and to amplify a second capacitance from the frequency tuning network. The frequency of oscillations may be tuned by varying a capacitance, and isolating one or more of noise sources or parasitic capacitances from the tuning network.
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公开(公告)号：US09608647B1
公开(公告)日：2017-03-28
申请号：US15234743
申请日：2016-08-11
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.
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公开(公告)号：US09490746B1
公开(公告)日：2016-11-08
申请号：US14838022
申请日：2015-08-27
IPC分类号： H03B5/36
CPC分类号： H03B5/366 , H03B5/364 , H03B2201/011 , H03B2201/0266
摘要： A voltage-controlled oscillator and a method for tuning oscillations. The oscillator comprises a resonator input connected to an oscillator core and a frequency tuning network. The oscillator core and resonator input are isolated from the frequency tuning network by inductors. The method comprises generating oscillations, tuning the frequency of the oscillations by varying a capacitance, and isolating one or more of noise sources or parasitic capacitances from the tuning network.
摘要翻译： 压控振荡器和调谐振荡的方法。 振荡器包括连接到振荡器核心和频率调谐网络的谐振器输入端。 振荡器芯和谐振器输入通过电感器与频率调谐网络隔离。 该方法包括产生振荡，通过改变电容来调谐振荡的频率，以及从调谐网络隔离噪声源或寄生电容中的一个或多个。
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9.发明申请公开(公告)号：US20180138912A1
公开(公告)日：2018-05-17
申请号：US15812221
申请日：2017-11-14
CPC分类号： H03L7/07 , H03B5/1212 , H03B5/124 , H03B5/1256 , H03B2200/0076
摘要： Methods and systems are provided for adaptively configuring voltage-controlled oscillator (VCO) arrays, such as to reduce mismatches among the VCOs. A plurality of voltage-controlled oscillators (VCOs), connected in parallel to a common control input, and with each VCO outputting an oscillating signal based on the common control input and an adjustment input, may be configured to reduce mismatches among the VCOs. The plurality of VCO may be configured by adjusting at least one operational parameter applicable to interconnection paths connecting outputs of the plurality of VCOs; measuring a mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter; and adjusting a first operational parameter applicable to one or more of the plurality of VCOs to reduce mismatch between signals at the outputs of the plurality of VCOs with respect to a first signal parameter.
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公开(公告)号：US09819349B2
公开(公告)日：2017-11-14
申请号：US15166894
申请日：2016-05-27
CPC分类号： H03L7/07 , H03B5/1212 , H03B5/124 , H03B5/1256 , H03B2200/0076
摘要： A method and system are provided for reducing mismatch between oscillators in an LC VCO array. In an implementation, a method comprises measuring the mismatch between the driver strengths, by measuring the corresponding oscillation amplitudes, and a mismatch between the resonance frequency of each LC VCO in the array of VCOs, and adjusting each LC VCO to reduce the measured amplitude and frequency mismatches. In an implementation, the measuring and adjusting is performed once to calibrate the array of VCOs. In another implementation, the system measures and adjusts the array of VCOs repeatedly. In another implementation, the LC VCO array has a master VCO and a plurality of slave VCOs connected to the master VCO by slave PLLs to reduce phase noise caused by mismatches.
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