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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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公开(公告)号：US06360087B1
公开(公告)日：2002-03-19
申请号：US09260919
申请日：1999-03-02
IPC分类号： H04B106
CPC分类号： H04B1/406 , H03D3/006 , H03D7/1408 , H03D7/1433 , H03D7/1458 , H03D7/1491 , H03D2200/0047 , H03D2200/009 , H04B1/30
摘要： A direct conversion receiver system is provided in which a first input signal at a first frequency is applied to a first input port of a multiplier, a second input signal at a second frequency equal to about {fraction (1/n)} times the first frequency, wherein n is an integer, is applied to a second input port of the multiplier. A first filter coupled to the first input port is configured to substantially filter out any leakage at the second frequency which may be present. A second filter coupled to the second input port is configured to substantially filter out any leakage at the first frequency which may be present. The multiplier is configured to produce a signal at an output port thereof which is derived from the product of the first and second signals. In one embodiment, the output is representative of the product of the filtered first signal and a multiplication factor which switches at n times the second frequency. The output of the multiplier is coupled to a third filter. The output signal has a baseband component and another component. The third filter is configured to substantially filter out the other component and substantially maintain the baseband component in the output signal. In one implementation example, the multiplier is a mixer initializing half-frequency injection, such that the LO frequency is about ½ the RF frequency.
摘要翻译： 提供一种直接转换接收机系统，其中以第一频率的第一输入信号被施加到乘法器的第一输入端口，第二频率的第二输入信号等于第一频率的大约{分数（1 / n）}倍） 频率，其中n是整数，被施加到乘法器的第二输入端口。 耦合到第一输入端口的第一滤波器被配置为基本上滤除可能存在的第二频率处的任何泄漏。 耦合到第二输入端口的第二滤波器被配置为基本上滤除可能存在的第一频率处的任何泄漏。 乘法器被配置为在其输出端口处产生从第一和第二信号的乘积导出的信号。 在一个实施例中，输出代表滤波后的第一信号和在第二频率n倍切换的乘法因子的乘积。 乘法器的输出耦合到第三个滤波器。 输出信号具有基带分量和另一分量。 第三滤波器被配置为基本上滤除另一分量并且基本上保持输出信号中的基带分量。 在一个实施例中，乘法器是混频器初始化半频率注入，使得LO频率约为RF频率的1/2。
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3.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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4.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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5.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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6.发明授权Continuous closed-loop power control system including modulation injection in a wireless transceiver power amplifier 有权连续闭环功率控制系统，包括无线收发器功率放大器中的调制注入公开(公告)号：US07218951B2
公开(公告)日：2007-05-15
申请号：US10885162
申请日：2004-07-06
CPC分类号： H04W52/52 , H03F1/0272 , H03F2200/294 , H03F2200/372 , H04B2001/0416
摘要： A single continuous closed-loop power control feedback system provides seamless power control for a power amplifier and also enables an AM signal to be injected into the power amplifier through the power amplifiers' control port. The AM signal is developed by an I/Q modulator and supplied to a comparator located in the power control loop. By using leakage from the power amplifier as feedback to a phase locked loop during initial power amplifier power ramp-up, the single continuous closed-loop power control system provides continuous feedback to the phase locked loop during the entire power amplification ramp-up period and eliminates the need for multiple feedback loops.
摘要翻译： 单个连续闭环功率控制反馈系统为功率放大器提供无缝功率控制，并且还可以通过功率放大器的控制端口将AM信号注入功率放大器。 AM信号由I / Q调制器开发，并提供给位于功率控制回路中的比较器。 在初始功率放大器功率提升期间，通过使用来自功率放大器的泄漏作为对锁相环的反馈，单个连续闭环功率控制系统在整个功率放大加速周期期间向锁相环提供连续反馈，并且 消除了对多个反馈环路的需要。
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7.发明授权System and method 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和方法公开(公告)号：US07369871B2
公开(公告)日：2008-05-06
申请号：US10915186
申请日：2004-08-10
CPC分类号： H03F1/0211 , H03F1/0233 , H03F2200/294 , H03F2200/372 , H03G3/3047
摘要： A method for a closed power control feedback loop 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： 用于闭合功率控制反馈环路的方法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，并且在 其中发射信号仅具有提供给功率放大器的PM分量的系统。 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：US07082169B2
公开(公告)日：2006-07-25
申请号：US10207320
申请日：2002-07-29
IPC分类号： H03K7/06
CPC分类号： H03C3/0983 , H03C3/0966 , H03C5/00 , H04L27/0002 , H04L27/2017
摘要： A mirror translation loop upconverter that is capable of upconverting both constant envelope and non-constant envelope modulation formats is disclosed. Embodiments of the invention provide the ability to upconvert a transmit signal that includes only a phase-modulated component, only an amplitude-modulated component, or both a phase-modulated component and an amplitude-modulated component. If the transmit signal includes both a phase-modulated signal component and an amplitude-modulated signal component, the phase-modulated signal component and the amplitude-modulated signal component are supplied to a pair of phase shifters. The phase shifters alter the phase of the phase-modulated signal by an amount related to the amplitude of the amplitude-modulated signal. The phase shifters oppositely alter the phase of the phase-modulated signal, and therefore supply complementary phase versions of the phase-modulated signal. The phase-altered phase-modulated signals from the phase shifters are then supplied to a pair of translation loops. The translation loops are arranged in mirror architecture so that each translation loop receives the phase-altered phase-modulated signals. Each translation loop upconverts the signals and supplies a vector. The vectors supplied by the two translation loops are constant in magnitude, and have complementary phase. The two vectors are added together to provide a signal to a power amplifier. The signal represents both the phase and amplitude information to be transmitted.
摘要翻译： 公开了能够上变频恒定包络和非恒定包络调制格式的镜像平移环上变频器。 本发明的实施例提供将仅包括相位调制分量，仅调幅分量，或相位调制分量和幅度调制分量两者的发射信号上转换的能力。 如果发送信号包括相位调制信号分量和幅度调制信号分量，则相位调制信号分量和幅度调制信号分量被提供给一对移相器。 移相器将相位调制信号的相位改变与幅度调制信号的振幅相关的量。 移相器相反地改变相位调制信号的相位，并因此提供相位调制信号的互补相位版本。 然后将来自移相器的相位改变的相位调制信号提供给一对平移环路。 平移环路以镜像架构布置，使得每个平移环路接收相位改变的相位调制信号。 每个平移循环将信号上变频并提供向量。 由两个平移环提供的向量在幅度上是恒定的，并且具有互补相位。 将两个矢量相加在一起以向功率放大器提供信号。 信号表示要发送的相位和幅度信息。
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9.发明授权Multiple step switched translation loop for power amplifier feedback control 有权用于功率放大器反馈控制的多步切换平移环路公开(公告)号：US06792282B1
公开(公告)日：2004-09-14
申请号：US09666698
申请日：2000-09-21
IPC分类号： H04B102
CPC分类号： H03G3/3047 , H03G2201/103 , H03G2201/202 , H03G2201/206 , H03G2201/307
摘要： A translation loop modulator and power amplifier in a phase and amplitude modulated transmission environment includes a translation loop having a phase locked loop and that is configured to receive a first modulated signal (PM) and that is also configured to provide a frequency specific modulated signal. The invention also includes a power amplifier configured to receive the frequency specific modulated signal, a variable gain element configured to provide a second modulated signal (AM) to the power amplifier and a switching element configured to receive a portion of an output of the translation loop and a portion of an output power of the power amplifier. The switching element is configured to apply the output portion of the translation loop to an input of the translation loop during a first time period and apply the detected output power portion of the power amplifier to the input of the translation loop during a second time period, thus allowing the phase locked loop in the translation loop to correct for any phase shift caused by the power amplifier.
摘要翻译： 在相位和幅度调制传输环境中的平移环路调制器和功率放大器包括具有锁相环的平移环路，并且被配置为接收第一调制信号（PM），并且还被配置为提供频率特定调制信号。 本发明还包括被配置为接收频率特定调制信号的功率放大器，被配置为向功率放大器提供第二调制信号（AM）的可变增益元件和被配置为接收转换回路的输出的一部分的开关元件 和功率放大器的输出功率的一部分。 开关元件被配置为在第一时间段期间将平移环路的输出部分施加到平移环路的输入端，并且在第二时间周期期间将功率放大器的检测输出功率部分施加到平移环路的输入端， 从而允许平移环路中的锁相环校正由功率放大器引起的任何相移。
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10.发明授权System for closed loop power control using a linear or a non-linear power amplifier 有权使用线性或非线性功率放大器进行闭环功率控制的系统公开(公告)号：US06670849B1
公开(公告)日：2003-12-30
申请号：US09650987
申请日：2000-08-30
IPC分类号： H03G320
CPC分类号： H03G3/3042 , H03F1/02 , H03F2200/294 , H03F2200/372 , H04W52/52
摘要： A system for a closed power control feedback loop allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulated (AM) signal into the feedback loop using a variable gain element. By introducing an inverse version of the desired AM portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the PM portion of the signal, while the AM portion is introduced by the power control feedback loop. In another aspect of the invention, an inverse version of the AM portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired AM signal into the power control feedback loop, the power control feedback loop may not cancel the AM component present at the output of the power amplifier. In yet another aspect of the invention, the desired AM signal is injected into the feedback loop along with the power control reference signal.
摘要翻译： 用于闭合功率控制反馈回路的系统允许使用非线性放大器来放大相位调制（PM）信号，同时使用可变增益将所需幅度调制（AM）信号的逆版本引入反馈环路 元件。 通过将信号的期望的AM部分的逆版本引入功率控制反馈回路中，可以使用非线性和高效的功率放大器来仅放大信号的PM部分，同时引入AM部分 通过功率控制反馈回路。 在本发明的另一方面，将期望的发送信号的AM部分的逆版本引入放大器的功率控制反馈环路，该放大器正在放大相位调制信号和幅度调制信号。 通过将所需AM信号的逆版本引入功率控制反馈回路中，功率控制反馈回路可能不会消除存在于功率放大器输出端的AM分量。 在本发明的另一方面，所需的AM信号与功率控制参考信号一起被注入到反馈回路中。
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