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公开(公告)号：US08451960B2
公开(公告)日：2013-05-28
申请号：US12771559
申请日：2010-04-30
IPC分类号： H04L27/08
CPC分类号： H04W52/12 , H03G3/001 , H03G3/3089 , H04B2001/0416
摘要： Embodiments provide improved systems and methods of gain control and calibration for wireless transmitters. In particular, embodiments allow linear gain control over the entire transmitter gain control range, independent of temperature/process variations. Embodiments require very low power consumption compared to existing approaches. Embodiments may also be used for gain control calibration during production time, thereby substantially reducing production calibration time and cost.
摘要翻译： 实施例提供了用于无线发射机的增强控制和校准的改进的系统和方法。 特别地，实施例允许在整个发射机增益控制范围内的线性增益控制，与温度/过程变化无关。 与现有方法相比，实施例需要非常低的功耗。 实施例也可用于在生产时间期间的增益控制校准，从而大大减少生产校准时间和成本。
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公开(公告)号：US08768273B2
公开(公告)日：2014-07-01
申请号：US13328518
申请日：2011-12-16
申请人： Dmitriy Rozenblit , Masoud Kahrizi
发明人： Dmitriy Rozenblit , Masoud Kahrizi
IPC分类号： H04B1/04
CPC分类号： H04W52/52 , H04B17/101 , H04B17/102 , H04B17/103
摘要： Systems and methods are provided for detecting forward power sent to an antenna and reflected power reflected back from the antenna. Embodiments of the present invention provide systems and methods for measuring forward and reflected power and controlling the amount of power supplied to the antenna responsive to these measurements. Embodiments of the present invention enable the power sent to the antenna to be dynamically altered when antenna impendence changes (e.g., when the antenna gets too close to another object).
摘要翻译： 提供了用于检测发送到天线的正向功率和从天线反射回的反射功率的系统和方法。 本发明的实施例提供了用于测量前向和反射功率并根据这些测量来控制提供给天线的功率量的系统和方法。 当天线阻抗改变时（例如，当天线太靠近另一个物体时），本发明的实施例使能发送到天线的功率被动态地改变。
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3.发明申请Transmitter architecture enabling efficient preamplification gain control and related method 审中-公开发射机架构，可实现高效的前置放大增益控制和相关方法公开(公告)号：US20110306391A1
公开(公告)日：2011-12-15
申请号：US12802603
申请日：2010-06-09
IPC分类号： H04W52/04
CPC分类号： H03G3/3042
摘要： According to one embodiment, a radio frequency (RF) transceiver includes a transmitter enabling efficient preamplification gain control. The RF transceiver comprises a receiver and a power amplifier (PA) for amplifying a transmit signal of the transmitter. The transmitter is configured to provide pre-PA gain control for preamplifying the transmit signal before amplification by the PA, wherein substantially all of the pre-PA gain control is provided when the transmit signal is at a transmit frequency of the transmitter. In one embodiment, the transmitter includes a PA driver comprising in combination: a transconductance amplifier, a current steering block, and an output transformer. Each of the transconductance amplifier, current steering block, and output transformer is configured to contribute a respective variable gain control to the pre-PA gain control provided by the PA driver.
摘要翻译： 根据一个实施例，射频（RF）收发器包括能够进行有效的前置放大增益控制的发射器。 RF收发器包括用于放大发射机的发射信号的接收机和功率放大器（PA）。 发射器被配置为提供预PA增益控制，用于在PA放大之前对发射信号进行前置放大，其中当发射信号处于发射机的发射频率时，提供基本上所有的预PA增益控制。 在一个实施例中，发射机包括PA驱动器，其包括：跨导放大器，电流转向块和输出变压器。 跨导放大器，电流控制块和输出变压器中的每一个被配置为对由PA驱动器提供的前PA增益控制贡献相应的可变增益控制。
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4.发明授权Systems and methods for power control in a multiple standard mobile transmitter 有权多标准移动发射机功率控制系统和方法公开(公告)号：US08874051B2
公开(公告)日：2014-10-28
申请号：US13310434
申请日：2011-12-02
CPC分类号： H04L1/0033 , H03F1/0211 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/245 , H03F2200/451 , H03F2200/465 , H03G3/3042
摘要： A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.
摘要翻译： 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。
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5.发明申请SYSTEMS AND METHODS FOR POWER CONTROL IN A MULTIPLE STANDARD MOBILE TRANSMITTER 有权多标准移动发射机功率控制系统与方法公开(公告)号：US20120170624A1
公开(公告)日：2012-07-05
申请号：US13310434
申请日：2011-12-02
CPC分类号： H04L1/0033 , H03F1/0211 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/245 , H03F2200/451 , H03F2200/465 , H03G3/3042
摘要： A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.
摘要翻译： 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。
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6.发明授权Power amplifier control driver having over-current protection and linear control 有权功率放大器控制驱动器具有过流保护和线性控制公开(公告)号：US06950636B2
公开(公告)日：2005-09-27
申请号：US10313611
申请日：2002-12-06
CPC分类号： H03G3/3042 , H03G3/004 , H04B1/0466 , H04B2001/0416
摘要： A linear power control loop for a power amplifier is disclosed. Embodiments of the invention linearly control the power amplifier output, prevent the power amplifier from failure induced by excessive supply current by reducing power amplifier bias current, and provide a mechanism to detect whether the power amplifier is operating in a saturation condition.
摘要翻译： 公开了一种用于功率放大器的线性功率控制回路。 本发明的实施例线性地控制功率放大器输出，通过降低功率放大器偏置电流来防止功率放大器由过大的电源电流引起的故障，并提供检测功率放大器是否工作在饱和状态的机制。
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7.发明授权System for allowing a TDMA/CDMA portable transceiver to operate with closed loop power control 有权用于允许TDMA / CDMA便携式收发器在闭环功率控制下操作的系统公开(公告)号：US06795712B1
公开(公告)日：2004-09-21
申请号：US09665820
申请日：2000-09-20
IPC分类号： H04B7216
CPC分类号： H03F1/0211 , H03F1/0233 , H03F2200/294 , H03F2200/372 , H03G3/3047
摘要： A closed power control feedback loop system allows a single portable transceiver architecture to be used for systems in which a transmit signal including both a phase modulated (PM) component and an amplitude modulated (AM) component are supplied to a power amplifier and in systems in which the transmit signal has only a PM component supplied to a power amplifier. By injecting the inverse of the AM portion of the desired transmit signal into the closed power control feedback loop, the feedback loop will not cancel the AM portion of the signal, thus allowing a system where both a PM component and an AM component of the transmit signal are present at the output of the power amplifier to function using a closed power control feedback loop.
摘要翻译： 闭合的功率控制反馈回路系统允许单个便携式收发器架构用于其中包括相位调制（PM）分量和调幅（AM）分量两者的发射信号被提供给功率放大器的系统中， 其中发送信号仅具有提供给功率放大器的PM分量。 通过将期望的发射信号的AM部分的反相注入到闭合功率控制反馈环路中，反馈回路将不会消除信号的AM部分，从而允许其中PM分量和发射的AM分量两者的系统 信号存在于功率放大器的输出端，以使用闭合功率控制反馈回路工作。
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公开(公告)号：US06658237B1
公开(公告)日：2003-12-02
申请号：US09386865
申请日：1999-08-31
IPC分类号： H04B144
CPC分类号： H04B1/406 , H03D3/006 , H03D7/1408 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/165 , H03D2200/009 , H04B1/30
摘要： A multi-band transceiver having a receiver portion and a transmitter portion, wherein the receiver portion includes a direct conversion receiver system for directly downconverting a signal to baseband frequencies. The direct conversion receiver system includes a frequency translator having first and second inputs and an output. A first signal at a first frequency is applied to the first input. A second signal having a second frequency is applied to the second input. The first frequency is preferably an nth order subharmonic of the second frequency, wherein n is an integer greater than 1. A low pass filter is integral with or inherent to the first input, and a high pass filter is integral with or inherent to the second input. The corner frequencies of both the low pass and high pass filters is above the first frequency and below the second frequency.
摘要翻译： 一种具有接收机部分和发射机部分的多频带收发机，其中所述接收机部分包括用于将信号直接下变频到基带频率的直接转换接收机系统。 直接转换接收机系统包括具有第一和第二输入和输出的频率转换器。 将第一频率的第一信号施加到第一输入端。 具有第二频率的第二信号被施加到第二输入端。 第一频率优选地是第二频率的第n次次谐波，其中n是大于1的整数。低通滤波器与第一输入一体或固有，并且高通滤波器与第二频率成一体或固有的 输入。 低通滤波器和高通滤波器的转角频率高于第一频率并低于第二频率。
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9.发明授权System for a dual feedback translation loop for power amplifier feedback control 有权用于功率放大器反馈控制的双反馈平移环路系统公开(公告)号：US06633751B1
公开(公告)日：2003-10-14
申请号：US09666577
申请日：2000-09-21
IPC分类号： H01Q1112
CPC分类号： H03F1/3247 , H03F1/02 , H03F1/34 , H03F3/24 , H03F2200/294 , H03F2200/372 , H03G3/3047 , H04B2001/0416 , H04B2001/0433
摘要： A system for controlling a power amplifier using a dual feedback translation loop uses the output of the translation loop during a first time period where a power amplifier has insufficient power to lock the loop and uses the output of the power amplifier to lock the translation loop only after the power amplifier provides sufficient power. By using a first feedback loop taken from the output of the translation loop and a second feedback loop taken from the output of the power amplifier, the translation loop can lock to the output of the translation loop until the power output of the power amplifier is sufficient to lock the translation loop. A pair of phase detectors and corresponding charge pumps associated with each of the feedback loops provides a smooth switching function while transitioning from the first loop to the second loop.
摘要翻译： 用于使用双反馈平移环控制功率放大器的系统在第一时间段期间使用平移环路的输出，其中功率放大器的功率不足以锁定环路并且仅使用功率放大器的输出来仅锁定转换环路 功率放大器提供足够的功率后。 通过使用从平移环路的输出获得的第一反馈回路和从功率放大器的输出获得的第二反馈回路，转换环路可以锁定到转换环路的输出，直到功率放大器的功率输出足够 锁定翻译循环。 与每个反馈回路相关联的一对相位检测器和相应的电荷泵在从第一回路转换到第二回路时提供平滑的开关功能。
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10.发明授权Polar transmitter having a dynamically controlled voltage regulator and method for operating same 有权具有动态控制的电压调节器的极性发射器及其操作方法公开(公告)号：US07764055B2
公开(公告)日：2010-07-27
申请号：US11483687
申请日：2006-07-10
IPC分类号： G05F1/00
CPC分类号： H04B1/04 , H03F1/0227 , H03G3/3047 , H04B2001/0416 , H04W52/367 , H04W52/52
摘要： A supply voltage controlled power amplifier includes a power amplifier, a closed power control loop configured to generate a power control signal, and a voltage regulator coupled to the power control loop, the voltage regulator including a first regulator stage, a second regulator stage, and a peak detector, wherein an output of the second regulator stage is applied as a feedback signal to the first regulator stage and wherein an output of the first regulator stage is decreased to a level consistent with an output of the power amplifier and an additional operating buffer amount.
摘要翻译： 电源电压控制功率放大器包括功率放大器，被配置为产生功率控制信号的闭合功率控制回路和耦合到功率控制回路的电压调节器，所述电压调节器包括第一调节器级，第二调节器级和 峰值检测器，其中将第二调节器级的输出作为反馈信号施加到第一调节器级，并且其中第一调节器级的输出减小到与功率放大器的输出和附加操作缓冲器一致的电平 量。
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