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公开(公告)号：US08705654B1
公开(公告)日：2014-04-22
申请号：US12901109
申请日：2010-10-08
CPC分类号： H03F3/195 , H03F1/3247 , H03F1/3282 , H03F3/24 , H04L27/0002
摘要： The present disclosure relates to RF circuitry having delay locked loop (DLL) circuitry that may be used to measure amplitude modulation-to-phase modulation (AMPM) distortion of an RF power amplifier during factory calibration or during real time operation of the RF circuitry. During a calibration mode, the DLL circuitry may be calibrated using a reference clock signal. During a phase measurement mode, the DLL circuitry may use the reference clock signal, which is representative of an RF input signal to the RF power amplifier, and a feedback signal, which is representative of an RF output signal from the RF power amplifier, to measure a phase difference between the RF input signal and the RF output signal. By measuring the phase difference at different amplitudes of the RF output signal, the AMPM distortion of the RF power amplifier may be determined and used to correct for the AMPM distortion.
摘要翻译： 本公开涉及具有延迟锁定环（DLL）电路的RF电路，其可以用于在工厂校准期间或在RF电路的实时操作期间测量RF功率放大器的幅度调制 - 相位调制（AMPM）失真。 在校准模式期间，可以使用参考时钟信号来校准DLL电路。 在相位测量模式期间，DLL电路可以使用表示到RF功率放大器的RF输入信号的参考时钟信号，以及代表来自RF功率放大器的RF输出信号的反馈信号， 测量RF输入信号和RF输出信号之间的相位差。 通过测量RF输出信号的不同幅度的相位差，可以确定RF功率放大器的AMPM失真并用于校正AMPM失真。
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公开(公告)号：US08536837B1
公开(公告)日：2013-09-17
申请号：US13156518
申请日：2011-06-09
IPC分类号： H02J7/00
CPC分类号： H04B1/06 , H04B2001/0416
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The resistance of the battery is thereafter used to compensate for battery droop during over-voltage detection and correction for one or more subsequent transmit bursts.
摘要翻译： 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常，在第一发射突发的斜坡上升之前，测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后，在满负载时测量电池的电压，并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压，满载时电池的测量电压和满载时提供给功率放大器的检测电流，确定电池的电阻。 此后，电池的电阻用于补偿过电压检测期间的电池下降和针对一个或多个后续发射脉冲串的校正。
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公开(公告)号：US08509351B1
公开(公告)日：2013-08-13
申请号：US12895223
申请日：2010-09-30
IPC分类号： H03C3/00
CPC分类号： H03C5/00 , H03C2200/0058
摘要： The present disclosure relates to multi-mode RF circuitry using a single IQ modulator topology that may support different communication standards, including enhanced data rates for global system for mobile communications evolution (EDGE) and EDGE evolution by dividing certain modulation functions between a frequency synthesizer and an IQ modulator. Specifically, during a standard modulation mode, which may be used to support many communications standards, the frequency synthesizer provides an un-modulated RF carrier signal to the IQ modulator, which either phase modulates or phase and amplitude modulates the un-modulated RF carrier signal to provide a standard modulated RF signal. During a small signal polar modulation mode, which may be used to support the EDGE and EDGE evolution protocols, the frequency synthesizer provides a phase-modulated RF carrier signal to the IQ modulator, which may or may not amplitude modulate the phase-modulated RF carrier signal to provide a small signal polar modulated RF signal.
摘要翻译： 本公开涉及使用可以支持不同通信标准的单个IQ调制器拓扑的多模式RF电路，包括用于移动通信演进（EDGE）的全球系统的增强的数据速率和通过在频率合成器和 一个IQ调制器。 具体地说，在可用于支持许多通信标准的标准调制模式中，频率合成器向IQ调制器提供未调制的RF载波信号，IQ调制器可以对未调制的RF载波信号进行相位调制或相位和幅度调制 以提供标准的调制RF信号。 在可以用于支持EDGE和EDGE演进协议的小信号极化调制模式中，频率合成器向IQ调制器提供相位调制的RF载波信号，IQ调制器可以或可以不对相位调制的RF载波进行幅度调制 信号提供小信号极调调制RF信号。
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公开(公告)号：US08489042B1
公开(公告)日：2013-07-16
申请号：US12900880
申请日：2010-10-08
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/3282 , H03F1/34 , H03F3/189 , H03F3/24 , H03F2200/78 , H03F2201/3212 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04B2001/0433
摘要： A system and method for providing a polarization feedback linearization to correct a non-linear amplitude error of an amplitude and phase detector or polar detector is disclosed. The method involves correcting a non-linear phase error of an amplitude detector via a look up table (LUT) that is driven by a radio frequency (RF) signal. The LUT provides values that are usable to correct an RF output that is a function of the RF output signal and is not a function of a device that incorporates the open loop modulation system of the present disclosure. Specifically, a detection of the corrected RF output amplitude is usable to drive a phase correction so that the RF output with corrected phase is a function of the RF output alone and not a function of a system or circuit that generates the RF output signal.
摘要翻译： 公开了一种用于提供偏振反馈线性化以校正幅度和相位检测器或极性检测器的非线性幅度误差的系统和方法。 该方法包括通过由射频（RF）信号驱动的查找表（LUT）校正振幅检测器的非线性相位误差。 LUT提供可用于校正作为RF输出信号的函数的RF输出的值，并且不是包含本公开的开环调制系统的装置的功能。 具体地说，校正的RF输出幅度的检测可用于驱动相位校正，使得具有校正相位的RF输出是单独的RF输出的函数，而不是产生RF输出信号的系统或电路的功能。
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公开(公告)号：US08200181B1
公开(公告)日：2012-06-12
申请号：US12201116
申请日：2008-08-29
CPC分类号： H04B1/30 , H04B1/0057
摘要： The present invention relates to a dual radio frequency (RF) receiver circuit that includes a first RF mixer and a second RF mixer. The first and second RF mixers may be fed from a common local oscillator or from two separate local oscillators. When fed from two separate local oscillators and when the first and second RF mixers are receiving the same or nearly the same RF channel, the frequency of the RF channel is less than the frequency of one local oscillator and is greater than the frequency of the other local oscillator. This arrangement separates the frequencies of the local oscillators, thereby reducing noise, instability, or both, which may otherwise de-sensitize the dual RF receiver circuit.
摘要翻译： 本发明涉及一种包括第一RF混频器和第二RF混频器的双射频（RF）接收机电路。 第一和第二RF混频器可以从公共本地振荡器或两个单独的本地振荡器馈送。 当从两个独立的本地振荡器馈送时，并且当第一和第二RF混频器正在接收相同或几乎相同的RF信道时，RF信道的频率小于一个本地振荡器的频率并且大于另一个本地振荡器的频率 本地振荡器。 这种布置分离本地振荡器的频率，从而降低噪声，不稳定性或两者，否则可以使双RF接收器电路去敏化。
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公开(公告)号：US08102943B1
公开(公告)日：2012-01-24
申请号：US11740036
申请日：2007-04-25
CPC分类号： H04B1/0007
摘要： The present invention is a radio frequency (RF) receiver that uses an RF mixer for tuning to desired frequency bands. The RF receiver down converts a received RF signal into a very low intermediate frequency (VLIF) signal. When receiving a desired RF signal, the frequency of the resulting VLIF signal is called the desired VLIF frequency, and is based on the signal strength of the received RF signal. In one embodiment of the present invention, the desired VLIF frequency is selected to be one of two VLIF frequencies, and is inversely related to the signal strength of the received RF signal. For example, a higher desired VLIF frequency is selected when receiving lower signal strength RF signals to increase effective receiver sensitivity. A lower desired VLIF frequency is selected when receiving higher signal strength RF signals to improve image rejection.
摘要翻译： 本发明是一种使用RF混频器调谐到期望频带的射频（RF）接收机。 RF接收机将接收到的RF信号转换成非常低的中频（VLIF）信号。 当接收到所需的RF信号时，产生的VLIF信号的频率被称为期望的VLIF频率，并且基于所接收的RF信号的信号强度。 在本发明的一个实施例中，期望的VLIF频率被选择为两个VLIF频率之一，并且与所接收的RF信号的信号强度成反比。 例如，当接收较低信号强度RF信号以增加有效的接收机灵敏度时，选择更高的期望VLIF频率。 当接收到更高信号强度的RF信号以改善图像抑制时，选择较低的期望的VLIF频率。
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47.发明授权Utilizing computed battery resistance as a battery-life indicator in a mobile terminal 有权利用计算的电池电阻作为移动终端中的电池寿命指示器公开(公告)号：US08035397B1
公开(公告)日：2011-10-11
申请号：US12873968
申请日：2010-09-01
IPC分类号： G01N27/416 , H04M1/00 , H04B1/04
CPC分类号： G01R31/3662 , G01R31/3624 , G01R31/3679
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The battery resistance is thereafter updated as desired and used as an indicator of remaining battery-life or power of the battery of the mobile terminal.
摘要翻译： 提供了一种用于在发送突发期间考虑电池下降的移动终端的发射机的过电压检测和校正系统。 通常，在第一发射突发的斜坡上升之前，测量移动终端的电池在空载状态下的电压。 在发送突发的斜坡上升之后，在满负载时测量电池的电压，并检测在满载时提供给发射机的功率放大器的电流。 基于空载电池的测量电压，满载时电池的测量电压和满载时提供给功率放大器的检测电流，确定电池的电阻。 然后根据需要更新电池电阻，并将其用作移动终端的电池的剩余电池寿命或电力的指标。
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公开(公告)号：US07962108B1
公开(公告)日：2011-06-14
申请号：US11392053
申请日：2006-03-29
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/3241
摘要： A system and method for calibrating Amplitude Modulation to Phase Modulation (AM/PM) compensation circuitry in a mobile terminal operating according to a polar modulation scheme are provided. In general, during ramp-up for a transmit burst, measurements of a phase error between an input and output of power amplifier circuitry in the transmit chain are obtained. Using the phase error measurements, the AM/PM compensation circuitry is calibrated and used to provide AM/PM compensation for the same transmit burst. By calibrating the AM/PM compensation circuitry using the phase error measurements obtained during ramp-up, the AM/PM compensation circuitry is calibrated for the desired frequency band, sub-band, and power control level setting as well as for the current load conditions at the antenna and ambient temperature.
摘要翻译： 提供了一种用于校准根据极性调制方案操作的移动终端中的幅度调制到相位调制（AM / PM）补偿电路的系统和方法。 通常，在发射突发的斜坡上升期间，获得发射链中的功率放大器电路的输入和输出之间的相位误差的测量。 使用相位误差测量，AM / PM补偿电路被校准并用于为相同的发射脉冲串提供AM / PM补偿。 通过使用在斜坡上升期间获得的相位误差测量来校准AM / PM补偿电路，AM / PM补偿电路根据期望的频带，子频带和功率控制电平设置以及当前负载条件进行校准 在天线和环境温度。
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公开(公告)号：US07956615B1
公开(公告)日：2011-06-07
申请号：US11679199
申请日：2007-02-27
IPC分类号： G01N27/416
CPC分类号： G01R31/3662 , G01R31/3624 , G01R31/3679
摘要： An over-voltage detection and correction system for a transmitter of a mobile terminal that accounts for battery droop during a transmit burst is provided. In general, prior to ramp-up for a first transmit burst, a voltage of the battery of the mobile terminal at a no-load condition is measured. After ramp-up for the transmit burst, the voltage of the battery is measured at full-load, and a current provided to a power amplifier of the transmitter at full-load is detected. Based on the measured voltage of the battery at no-load, the measured voltage of the battery at full-load, and the detected current provided to the power amplifier at full-load, a resistance of the battery is determined. The battery resistance is thereafter updated as desired and used as an indicator of remaining battery-life or power of the battery of the mobile terminal.
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公开(公告)号：US07801244B2
公开(公告)日：2010-09-21
申请号：US10147579
申请日：2002-05-16
IPC分类号： H04L25/49
CPC分类号： H03C5/00 , H04L27/361 , H04L27/367
摘要： A transmitter includes a polar converter to generate an amplitude signal and a phase signal, which in turn is converted to a frequency signal. The amplitude signal is directed to a compensator and a compensation signal is generated. The compensation signal is combined with the amplitude signal and the combined signal is presented to the power amplifier. The AM to AM conversion is reduced such that the output signal of the power amplifier contains substantially no spurious components.
摘要翻译： 发射机包括极化转换器，用于产生振幅信号和相位信号，相位信号又被转换成频率信号。 幅度信号被引导到补偿器并产生补偿信号。 补偿信号与振幅信号组合，组合信号被呈现给功率放大器。 降低AM到AM转换，使得功率放大器的输出信号基本上不含杂散分量。
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