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1. 发明申请

US20170366385A1 HIGH SPEED PULSE MODULATION SYSTEM 有权
公开(公告)号：US20170366385A1
公开(公告)日：2017-12-21
申请号：US15184114
申请日：2016-06-16
申请人： Infineon Technologies AG
发明人： Andre Roger , Romain Ygnace , Juergen Schaefer , Matthias Marquardt , Ljudmil Anastasov
IPC分类号： H04L27/26 , H04L27/10 , H04L27/02
CPC分类号： H04L27/2697 , H04L27/0014 , H04L27/02 , H04L27/10 , H04L2027/0016 , H04L2027/0018 , H04L2027/0055
摘要： A modulator operable to control an oscillator is described. The modulator can include a memory that stores oscillator control values and a bit streaming block. The bit streaming block can generate a bit stream based on the oscillator control values and transmit the bit stream to the oscillator to control an oscillation frequency of the oscillator. The modulator can also include a bit streaming loader (BSL). The BSL can receive one or more of the oscillator control values from the memory, generate one or more corresponding bit values based on the one or more of the oscillator control values, and provide the one or more bit values to the bit streaming block. The bit streaming block can then generate the bit stream based the one or more bit values generated by the BSL.

2. 发明授权

US09628308B2 Circuit, communication unit and method for VCO frequency adjustment 有权
公开(公告)号：US09628308B2
公开(公告)日：2017-04-18
申请号：US14920887
申请日：2015-10-23
申请人： MEDIATEK INC.
发明人： Khurram Muhammad , Dennis Mahoney
IPC分类号： H04L27/28 , H04L27/00 , H03L7/197
CPC分类号： H04L27/0014 , H03L7/1976 , H04L2027/0018 , H04L2027/0055 , H04L2027/0069
摘要： A circuit includes a frequency generation circuit having a phase locked loop, PLL, arranged to generate a carrier frequency; and a controller operably coupled to the frequency generation circuit and arranged to determine a frequency location of one or more signals output by the frequency generation circuit and provide a control signal thereto to adjust the carrier frequency generated by the frequency generation circuit. The controller is arranged to: cooperate with the PLL to introduce a frequency offset in the generated carrier frequency in a first frequency direction; and introduce a compensating frequency offset in a baseband transmit signal in a second frequency direction opposite to the first frequency direction.

3. 发明申请

US20170005737A1 MISMATCH COMPENSATING DEVICE AND METHOD, AND MISMATCH DETECTING DEVICE 有权
标题翻译：误差补偿装置和方法以及误码检测装置
公开(公告)号：US20170005737A1
公开(公告)日：2017-01-05
申请号：US15173973
申请日：2016-06-06
申请人： MStar Semiconductor, Inc.
发明人： Tzu-Yi Yang , Tai-Lai Tung
IPC分类号： H04B17/11
CPC分类号： H04B17/11 , H04L5/0007 , H04L27/0014 , H04L27/364 , H04L27/367 , H04L2027/0018
摘要： A mismatch compensating device includes: a signal generator, synchronously outputting first and second signal; a gain and phase compensator, processing the first and second signals according to a gain parameter and a phase parameter to generate compensated first and second signals; a DAC, performing a digital-to-analog conversion on the compensated first and second signals to generate first and second analog signals; an analog front-end circuit, processing the first and second analog signals to output a joint signal; a mismatch detecting circuit, detecting the power of the joint signal to generate a detection result; a frequency-dependent mismatch compensator, compensating at least one of the first and second signals; and a control circuit, setting the gain and phase parameters and a parameter of the frequency-dependent mismatch compensator according to the detection result to compensate frequency-independent gain and phase mismatch and a frequency-dependent mismatch response.
摘要翻译：不对称补偿装置包括：信号发生器，同步输出第一和第二信号; 增益和相位补偿器，根据增益参数和相位参数处理第一和第二信号以产生补偿的第一和第二信号; DAC，对经补偿的第一和第二信号执行数模转换以产生第一和第二模拟信号; 模拟前端电路，处理第一和第二模拟信号以输出联合信号; 不匹配检测电路，检测联合信号的功率以产生检测结果; 频率相关失配补偿器，补偿第一和第二信号中的至少一个; 以及控制电路，根据检测结果设置增益和相位参数以及频率相关失配补偿器的参数，以补偿频率无关的增益和相位失配以及频率相关的不匹配响应。

4. 发明授权

US09490858B2 Transmitter capable of reducing local oscillation leakage and in-phase/quadrature-phase (I/Q) mismatch and adjusting methods thereof 有权
标题翻译：能够减少本地振荡泄漏和同相/正交相位（I / Q）失配的发射器及其调整方法
公开(公告)号：US09490858B2
公开(公告)日：2016-11-08
申请号：US12237827
申请日：2008-09-25
申请人： Hong-Ta Hsu , Ying-Hsi Lin
发明人： Hong-Ta Hsu , Ying-Hsi Lin
IPC分类号： H04B1/16 , H04B1/04 , H04B1/30 , H04L27/00
CPC分类号： H04B1/16 , H04B1/0475 , H04B1/30 , H04L27/0002 , H04L27/0014 , H04L2027/0018
摘要： An adjusting method for reducing local oscillation leakage or I/Q mismatch in a transmitter includes the steps of: (a) detecting a current extent of local oscillation leakage or I/Q mismatch; (b) determining if an adjusting direction is correct with reference to the current extent of local oscillation leakage or I/Q mismatch thus detected, maintaining the adjusting direction if correct, and reversing the adjusting direction upon determining that the adjusting direction is incorrect; and (c) adjusting a control signal according to the adjusting direction.
摘要翻译：用于减少发射机中本地振荡泄漏或I / Q失配的调节方法包括以下步骤：（a）检测当前振荡泄漏或I / Q失配的程度; （b）参照当前的本地振荡泄漏程度或如此检测到的I / Q失配来确定调整方向是否正确，如果正确则保持调节方向，并在确定调节方向不正确时反转调节方向; 和（c）根据调整方向调整控制信号。

5. 发明申请

US20160156489A1 MILLIMETER-WAVE MODULATION DEVICE 有权
标题翻译：毫米波调制装置
公开(公告)号：US20160156489A1
公开(公告)日：2016-06-02
申请号：US14956587
申请日：2015-12-02
申请人： KOREA ELECTRONICS TECHNOLOGY INSTITUTE
发明人： Ki Jin KIM , Kwang Ho AHAN , Sang Hoon PARK
IPC分类号： H04L27/12 , H04B1/04 , H04L7/033
CPC分类号： H04B1/04 , H04L7/0331 , H04L27/2014 , H04L27/2039 , H04L2027/0016 , H04L2027/0018 , H04L2027/0055 , H04L2027/0091
摘要： Provided is a lower power and high efficiency millimeter-wave modulation apparatus capable of modulating digital data into transmitting signals in a millimeter frequency band, the millimeter-wave modulation apparatus including; a modulation part, which carries out a modulation of a constant envelope attribute, and to which a first local oscillation signal is fixed according to a rate of input data; a phase shifter adopted to shift a phase of an output of the modulation part; a power amplifier adopted to amplify an output of the phase shifter; and an antenna connected to an output of the power amplifier.
摘要翻译：提供了一种能够将数字数据调制成毫米波段的发送信号的低功率，高效率的毫米波调制装置，该毫米波调制装置包括：调制部分，其执行恒定包络属性的调制，并且根据输入数据的速率固定第一本地振荡信号; 移相器，用于移位调制部分的输出相位; 用于放大移相器的输出的功率放大器; 以及连接到功率放大器的输出的天线。

6. 发明申请

US20160127160A1 CIRCUIT, COMMUNICATION UNIT AND METHOD FOR VCO FREQUENCY ADJUSTMENT 审中-公开
标题翻译：电路，通信单元和VCO频率调整方法
公开(公告)号：US20160127160A1
公开(公告)日：2016-05-05
申请号：US14920887
申请日：2015-10-23
申请人： MEDIATEK INC.
发明人： Khurram Muhammad , Dennis Mahoney
IPC分类号： H04L27/00
CPC分类号： H04L27/0014 , H03L7/1976 , H04L2027/0018 , H04L2027/0055 , H04L2027/0069
摘要： A circuit includes a frequency generation circuit having a phase locked loop, PLL, arranged to generate a carrier frequency; and a controller operably coupled to the frequency generation circuit and arranged to determine a frequency location of one or more signals output by the frequency generation circuit and provide a control signal thereto to adjust the carrier frequency generated by the frequency generation circuit. The controller is arranged to: cooperate with the PLL to introduce a frequency offset in the generated carrier frequency in a first frequency direction; and introduce a compensating frequency offset in a baseband transmit signal in a second frequency direction opposite to the first frequency direction.
摘要翻译：电路包括频率产生电路，其具有被配置为产生载波频率的锁相环PLL; 以及控制器，其可操作地耦合到所述频率发生电路，并且被布置为确定由所述频率发生电路输出的一个或多个信号的频率位置，并提供其控制信号以调整由所述频率产生电路产生的载波频率。所述控制器被配置为：与所述PLL配合以在所述生成的载波频率中在第一频率方向上引入频率偏移; 并且在与第一频率方向相反的第二频率方向上的基带发送信号中引入补偿频率偏移。

7. 发明授权

US08995569B2 Quadrature digital-IF transmitter without inter-stage SAW filter and devices using same 有权
标题翻译：具有阶跃式SAW滤波器的正交数字中频发射机和使用其的器件
公开(公告)号：US08995569B2
公开(公告)日：2015-03-31
申请号：US13341495
申请日：2011-12-30
申请人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
发明人： Lup Meng Loh , Imtinan Elahi , Naveen Yanduru , Michael L. Brobston
IPC分类号： H04L25/49 , H04L25/03 , H04L27/20 , H04L27/00
CPC分类号： H04L25/03343 , H04L27/20 , H04L2027/0018
摘要： An RF transmitter comprises a digital-to-IF circuit block configured to receive a digital in-phase baseband signal and a digital quadrature baseband signal and to up-convert the digital in-phase and quadrature baseband signals to a digital in-phase IF signal and to a digital quadrature IF signal. The wireless RF transmitter further comprises an IF-to-RF circuit block configured to convert the digital in-phase and quadrature IF signals to analog signals and to up-convert the analog in-phase and quadrature IF signals to an RF output signal. The digital-to-IF circuit block comprises pre-compensation circuitry configured to reduce analog impairments associated with the IF-to-RF circuit block.
摘要翻译： RF发射机包括被配置为接收数字同相基带信号和数字正交基带信号的数/中频电路块，并且将数字同相和正交基带信号上变频到数字同相IF信号和数字正交IF信号。无线RF发射机还包括被配置为将数字同相和正交IF信号转换为模拟信号并将模拟同相和正交IF信号上变频为RF输出信号的IF至RF电路块。数字到中频电路块包括被配置为减少与IF到RF电路块相关联的模拟损伤的预补偿电路。

8. 发明授权

US08923461B2 Method and faculty to measure and compensate DCO frequency distortions using a DPLL 有权
公开(公告)号：US08923461B2
公开(公告)日：2014-12-30
申请号：US14105849
申请日：2013-12-13
申请人： Intel Mobile Communications GmbH
发明人： Giuseppe Li Puma , Bruno Jechoux
IPC分类号： H04B1/10 , H04L27/233 , H04L27/36 , H03C5/00 , H04L27/00
CPC分类号： H04L27/2334 , H03C5/00 , H04L27/0014 , H04L27/361 , H04L27/367 , H04L2027/0018 , H04L2027/0055 , H04L2027/0069 , H04L2027/0093
摘要： One embodiment of the present invention relates to a communication system having a digital to analog converter, a first input, a summation component, a compensation filter, and a compensation unit. The converter is configured to receive a first signal. The first input is configured to receive a phase modulation signal. The compensation filter generates a filtered frequency deviation signal to mitigate frequency distortions, such as those from a digital controlled oscillator. The compensation unit includes one or more inputs and is configured to generate a correction signal according to the filtered frequency deviation signal and the first signal. The correction signal at least partially accounts for estimated distortions of the phase modulation signal from the amplitude modulation path and mitigates frequency induced distortions. The summation component is configured to receive the phase modulation signal and the correction signal and to generate a corrected phase modulation signal as a result.

9. 发明授权

US08615205B2 I-Q mismatch calibration and method 失效
标题翻译： I-Q不匹配校准和方法
公开(公告)号：US08615205B2
公开(公告)日：2013-12-24
申请号：US12259178
申请日：2008-10-27
申请人： Ojas M. Choksi , Frederic Bossu
发明人： Ojas M. Choksi , Frederic Bossu
IPC分类号： H03C1/62
CPC分类号： H04L5/1461 , H03D3/009 , H03M1/1019 , H03M1/66 , H04L27/0014 , H04L2027/0016 , H04L2027/0018 , H04L2027/0024
摘要： Techniques are provided for reducing mismatch between the in-phase (I) and quadrature (Q) channels of a communications transmitter or receiver. In an exemplary embodiment, separate voltages are applied to bias the gates or bulks of the transistors in a mixer of the I channel versus a mixer of the Q channel. In another exemplary embodiment, separate voltages are applied to bias the common-mode reference voltage of a transimpedance amplifier associated with each channel. Techniques are further provided for deriving bias voltages to minimize a measured residual sideband in a received or transmitted signal, or to optimize other parameters of the received or transmitted signal. Techniques for generating separate bias voltages using a bidirectional and unidirectional current digital-to-analog converter (DAC) are also disclosed.
摘要翻译：提供了用于减少通信发射机或接收机的同相（I）和正交（Q）信道之间的失配的技术。在示例性实施例中，施加单独的电压以在I通道的混频器中与Q通道的混频器偏置晶体管的栅极或体积。在另一个示例性实施例中，施加单独的电压以偏置与每个通道相关联的跨阻抗放大器的共模参考电压。还提供了用于导出偏置电压以最小化接收或发射信号中测量的残留边带或者优化接收或发射信号的其它参数的技术。还公开了使用双向和单向电流数模转换器（DAC）产生单独偏置电压的技术。

10. 发明申请

US20130303100A1 RECEIVER CAPABLE OF REDUCING LOCAL OSCILLATION LEAKAGE AND IN-PHASE/QUADRATURE-PHASE (I/Q) MISMATCH AND AN ADJUSTING METHOD THEREOF 有权
标题翻译：可减少本地振荡泄漏和相/相位（I / Q）误差的接收器及其调整方法
公开(公告)号：US20130303100A1
公开(公告)日：2013-11-14
申请号：US13942887
申请日：2013-07-16
申请人： Realtek Semiconductor Corp.
发明人： Hong-Ta Hsu , Ying-Hsi Lin
IPC分类号： H04B1/16
CPC分类号： H04B1/16 , H04B1/0475 , H04B1/30 , H04L27/0002 , H04L27/0014 , H04L2027/0018
摘要： A receiver having a mixer for mixing a radio frequency signal and a local oscillator signal so as to generate a base band signal, a detecting unit for generating from the base band signal a detection signal that represents an extent of local oscillation leakage, and an adjusting unit coupled electrically to said mixer for outputting a control signal thereto to control a current operating state of said mixer, said adjusting unit being further coupled electrically to said detecting unit, and determining whether there is a reduction in the extent of local oscillation leakage based on the detection signal from said detecting unit. In operation, the adjusting unit maintains an adjusting direction for the control signal upon determining that the extent of local oscillation leakage is reduced, reverses the adjusting direction upon determining that the extent of local oscillation leakage is not reduced, and adjusts the control signal according to the adjusting direction.
摘要翻译：一种具有用于混合射频信号和本地振荡器信号以便产生基带信号的混频器的接收机，用于从基带信号产生表示局部振荡泄漏程度的检测信号的检测单元和调整单元，电耦合到所述混频器，用于输出控制信号以控制所述混频器的当前工作状态，所述调整单元进一步电耦合到所述检测单元，并且基于以下步骤确定是否存在局部振荡泄漏程度的降低来自所述检测单元的检测信号。在操作中，当确定局部振荡泄漏的程度减小时，调节单元维持控制信号的调节方向，在确定局部振荡泄漏的程度没有减小时反转调节方向，并且根据调整方向。

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