公开(公告)号：US08805304B2

公开(公告)日：2014-08-12

申请号：US13343631

申请日：2012-01-04

申请人： Qian Yu ,  Rajeev Krishnamoorthy ,  Olivier Charlon

发明人： Qian Yu ,  Rajeev Krishnamoorthy ,  Olivier Charlon

IPC分类号： H04B1/04

CPC分类号： H03F1/3258 ,  H03F3/195 ,  H03F3/245 ,  H03F3/45376 ,  H03F3/45892 ,  H03F2200/336 ,  H03F2203/45394 ,  H03F2203/45562 ,  H03F2203/45614 ,  H03F2203/45616

摘要： An RF linearizer and an associated method are provided for linearizing a power amplifier. The RF linearizer may include: (a) a quadrature up-converter for up-converting a baseband input signal that is to be transmitted by the power amplifier; (b) an RF analog predistorter controlled by a set of coefficients for predistorting the up-converted input signal; (c) a down-converter for down-converting an output signal of the power amplifier; (d) an error monitor receiving the down-converted output signal and the input signal for providing an error signal; and (e) a signal analyzer receiving the error signal, the signal analyzer using an out-of-band power spectrum of the error signal to optimize the set of coefficients. The input signal may have an in-phase component and a quadrature component.

摘要翻译： 提供RF线性化器和相关联的方法用于线性化功率放大器。 RF线性化器可以包括：（a）用于上变频由功率放大器发送的基带输入信号的正交上变频器; （b）由一组系数控制的RF模拟预失真器，用于预失真上变频的输入信号; （c）用于对功率放大器的输出信号进行下变频的下变频器; （d）误差监视器，接收所述下变频输出信号和所述输入信号以提供误差信号; 以及（e）信号分析仪，其接收误差信号，所述信号分析仪使用所述误差信号的带外功率谱来优化所述系数集合。 输入信号可以具有同相分量和正交分量。

公开(公告)号：US08331487B2

公开(公告)日：2012-12-11

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelope detector for finding the envelope of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelope detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelope voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于携带连接到包络检测器的RF信号的RF输入线，用于找到RF信号的包络，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US20120106600A1

公开(公告)日：2012-05-03

申请号：US12939067

申请日：2010-11-03

申请人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

发明人： Qian Yu ,  Frédéric Roger ,  Adric Q. Broadwell ,  Olivier Charlon

IPC分类号： H04B1/38 ,  H04L25/03 ,  H03F1/26

CPC分类号： H03F1/3241 ,  H03F3/19 ,  H03F2201/3224 ,  H04B2001/0425

摘要： RF predistortion apparatus for making linear the output signal of non-linear components such as RF power amplifiers. The apparatus comprises an RF input line for carrying an RF signal connected to an envelop detector for finding the envelop of the RF signal, a power detector for finding the power of the RF signal and a quadrature modulator. The apparatus also comprises a coefficient vector input line for carrying an input signal that carries one or more coefficients to a digitally controlled analog subsystem (DCAS). The DCAS having circuitry for processing both the output of the envelop detector and the output of the power detector by selecting one or more coefficients from the coefficient vector input line for generating a weighted summation of the power of the RF signal and a weighted summation of the envelop voltage of the RF signal that are output to the quadrature modulator. The quadrature modulator has circuitry for mixing the RF input signal with the output of the DCAS to generate a signal for predistorting the RF input signal feeding the power amplifier.

摘要翻译： 射频预失真装置，用于对诸如RF功率放大器之类的非线性分量的输出信号进行线性化。 该装置包括用于承载连接到包络检测器的RF信号用于找到RF信号的包络的RF输入线，用于找到RF信号的功率的功率检测器和正交调制器。 该装置还包括一个用于承载一个或多个系数到数字控制的模拟子系统（DCAS）的输入信号的系数向量输入线。 DCAS具有用于通过从系数向量输入线中选择一个或多个系数来处理包络检测器的输出和功率检测器的输出的电路，用于产生RF信号的功率的加权求和和 输出到正交调制器的RF信号的包络电压。 正交调制器具有用于将RF输入信号与DCAS的输出混合以产生用于预失真馈送功率放大器的RF输入信号的信号的电路。

公开(公告)号：US07949367B2

公开(公告)日：2011-05-24

申请号：US12625388

申请日：2009-11-24

申请人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

发明人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

IPC分类号： H04M1/00

CPC分类号： H04B1/005 ,  H04B1/0483 ,  H04B1/406

摘要： A current steering mechanism is provided in a radio transmitter (e.g., a multiband radio transmitter) to provide compatibility with a variety of baseband parts. Different proportions of an input signal current (“in”) are steered to a dummy load, a mixer for a first band, and at least one other mixer for a second band. The mechanism is structured to selectively apportion a current input signal between multiple paths of the same polarity having respective load circuits and concurrently steer different proportions of the current input signal to a dummy load path and at least one mixer path.

摘要翻译： 在无线电发射机（例如，多频带无线电发射机）中提供了当前的导向机制，以提供与各种基带部分的兼容性。 将输入信号电流（“in”）的不同比例转向虚拟负载，用于第一频带的混频器，以及用于第二频带的至少一个其它混频器。 该机构被构造成选择性地分配具有相应负载电路的相同极性的多个路径之间的当前输入信号，并且同时引导当前输入信号的不同比例到虚拟负载路径和至少一个混合器路径。

公开(公告)号：US20060205365A1

公开(公告)日：2006-09-14

申请号：US10544888

申请日：2004-02-09

申请人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

发明人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

IPC分类号： H04B1/02

CPC分类号： H04B1/005 ,  H04B1/0483 ,  H04B1/406

摘要： A current steering mechanism is provided in a radio transmitter (e.g., a multiband radio transmitter) to provide compatibility with a variety of baseband parts. Different proportions of an input signal current (“in”) may be steered to a dummy load (103), a mixer for a first band (106), and a mixer for a second band (108). In one example, five different loads are provided, one dummy load (103) and two different loads (105, 107) for each band. Possibilities include: 1. All current steered into dummy load via transistor A; 2. All current steered into Band 1 mixer via transistor B; 3. All current steered into a Band 1 mixer via transistor C, causing 6 dB input signal amplification; 4. All current steered into Band 2 mixer via transistor E; 5. All current steered into a Band 2 mixer via transistor D, causing 6 dB input signal amplification; 6. Like cases 2-5 but with diversion of some portion of current via a dummy load for attenuation of input signal in 1 dB steps.

摘要翻译： 在无线电发射机（例如，多频带无线电发射机）中提供了当前的导向机制，以提供与各种基带部分的兼容性。 可以将输入信号电流（“in”）的不同比例转向虚拟负载（103），用于第一频带（106）的混频器和用于第二频带（108）的混频器。 在一个示例中，为每个带提供五个不同的负载，一个虚拟负载（103）和两个不同的负载（105,107）。 可能性包括：1.所有电流通过晶体管A转向虚拟负载; 所有电流通过晶体管B转向带1混频器; 3.所有电流通过晶体管C转向带1混频器，导致6 dB输入信号放大; 所有电流通过晶体管E转向带2混频器; 5.所有电流通过晶体管D转向带2混频器，从而产生6 dB的输入信号放大; 与情况2-5类似，但通过一个虚拟负载转移一部分电流，以衰减1 dB步长的输入信号。

公开(公告)号：US06914489B2

公开(公告)日：2005-07-05

申请号：US10259012

申请日：2002-09-26

申请人： Olivier Charlon

发明人： Olivier Charlon

IPC分类号： H03L7/189 ,  H03L7/00

CPC分类号： H03L7/189

摘要： A circuit comprises a frequency synthesizing circuit with a voltage-controlled oscillator whose frequency is preset to a preset value. The voltage-controlled oscillator generates an oscillating signal in response to an input voltage. The frequency synthesizing circuit is configured to operate in a locked loop mode under control of an error signal representative of a phase frequency differential between the divided oscillating signal and a reference signal. A digital processing unit can disable the frequency synthesizing circuit to operate in phase locked loop mode. Once the synthesizing circuit is disabled, the digital processing unit determines a first and a second frequency of the oscillating signal in response to respective first and second loop filter input voltage values. The unit further generates a control value from the two frequencies, the frequency divider dividing ratio and the reference signal. The circuit further comprises a digital to analog converter configured to preset the loop filter input voltage to a preset value in response to the control value. Once the voltage controlled oscillator output oscillates at the corresponding input preset value, the digital processing unit disables the digital to analog converter and enables the frequency synthesizing to operate in phase locked loop mode.

摘要翻译： 电路包括具有频率预设为预设值的压控振荡器的频率合成电路。 压控振荡器响应于输入电压产生振荡信号。 频率合成电路被配置为在表示分频振荡信号与参考信号之间的相位差的误差信号的控制下在锁定环路模式下工作。 数字处理单元可以禁止频率合成电路在锁相环模式下工作。 一旦合成电路被禁用，数字处理单元响应于相应的第一和第二环路滤波器输入电压值来确定振荡信号的第一和第二频率。 该单元进一步从两个频率，分频器分频比和参考信号产生控制值。 电路还包括数模转换器，其被配置为响应于控制值将环路滤波器输入电压预设为预设值。 一旦压控振荡器输出以相应的输入预置值振荡，数字处理单元禁用数模转换器，并使频率合成能够在锁相环模式下工作。

公开(公告)号：US20110098007A1

公开(公告)日：2011-04-28

申请号：US11817792

申请日：2006-03-02

申请人： Olivier Charlon

发明人： Olivier Charlon

IPC分类号： H04B1/40

CPC分类号： H03J3/08 ,  H03J1/0008

摘要： Systems and methods according to the present invention address this need and others by providing filter tuning methods and apparatuses which directly measure filter attenuation by transmitting signaling tones through the filter(s). The measured attenuation is compared with the desired frequency response of the filter. The result of the comparison is used to tune the filter(s).

摘要翻译： 根据本发明的系统和方法通过提供通过发送信令音通过滤波器来直接测量滤波器衰减的滤波器调谐方法和装置来满足这种需要和其他需求。 将测量的衰减与滤波器的期望频率响应进行比较。 比较结果用于调整滤波器。

公开(公告)号：US20100069024A1

公开(公告)日：2010-03-18

申请号：US12625388

申请日：2009-11-24

申请人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

发明人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

IPC分类号： H04B1/04 ,  H01P5/12

CPC分类号： H04B1/005 ,  H04B1/0483 ,  H04B1/406

摘要： A current steering mechanism is provided in a radio transmitter (e.g., a multiband radio transmitter) to provide compatibility with a variety of baseband parts. Different proportions of an input signal current (“in”) are steered to a dummy load, a mixer for a first band, and at least one other mixer for a second band. The mechanism is structured to selectively apportion a current input signal between multiple paths of the same polarity having respective load circuits and concurrently steer different proportions of the current input signal to a dummy load path and at least one mixer path.

摘要翻译： 在无线电发射机（例如，多频带无线电发射机）中提供了当前的导向机制，以提供与各种基带部分的兼容性。 将输入信号电流（“in”）的不同比例转向虚拟负载，用于第一频带的混频器，以及用于第二频带的至少一个其它混频器。 该机构被构造成选择性地分配具有相应负载电路的相同极性的多个路径之间的当前输入信号，并且同时引导当前输入信号的不同比例到虚拟负载路径和至少一个混合器路径。

公开(公告)号：US07643847B2

公开(公告)日：2010-01-05

申请号：US10544888

申请日：2004-02-09

申请人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

发明人： Anton Daanen ,  Matthias Locher ,  Olivier Charlon

IPC分类号： H04M1/00

CPC分类号： H04B1/005 ,  H04B1/0483 ,  H04B1/406

摘要： A current steering mechanism is provided in a radio transmitter (e.g., a multiband radio transmitter) to provide compatibility with a variety of baseband parts. Different proportions of an input signal current (“in”) may be steered to a dummy load (103), a mixer for a first band (106), and a mixer for a second band (108). In one example, five different loads are provided, one dummy load (103) and two different loads (105, 107) for each band. Possibilities include: 1. All current steered into dummy load via transistor A; 2. All current steered into Band 1 mixer via transistor B; 3. All current steered into a Band 1 mixer via transistor C, causing 6 dB input signal amplification; 4. All current steered into Band 2 mixer via transistor E; 5. All current steered into a Band 2 mixer via transistor D, causing 6 dB input signal amplification; 6. Like cases 2-5 but with diversion of some portion of current via a dummy load for attenuation of input signal in 1 dB steps.

摘要翻译： 在无线电发射机（例如，多频带无线电发射机）中提供了当前的导向机制，以提供与各种基带部分的兼容性。 可以将输入信号电流（“in”）的不同比例转向虚拟负载（103），用于第一频带（106）的混频器和用于第二频带（108）的混频器。 在一个示例中，为每个带提供五个不同的负载，一个虚拟负载（103）和两个不同的负载（105,107）。 可能性包括：1.所有电流通过晶体管A转向虚拟负载; 所有电流通过晶体管B转向带1混频器; 3.所有电流通过晶体管C转向带1混频器，导致6 dB输入信号放大; 所有电流通过晶体管E转向带2混频器; 5.所有电流通过晶体管D转向带2混频器，从而产生6 dB的输入信号放大; 与情况2-5类似，但通过一个虚拟负载转移一部分电流，以衰减1 dB步长的输入信号。

公开(公告)号：US06998831B2

公开(公告)日：2006-02-14

申请号：US10923275

申请日：2004-08-20

申请人： Olivier Charlon

发明人： Olivier Charlon

IPC分类号： G05F3/16

CPC分类号： G05F3/262

摘要： A current mirror divides an input source voltage dynamically, to provide a controlled voltage that corresponds to an output load voltage. The correspondence between this controlled voltage and the output load voltage determines the correspondence between the output current and the input current. By dynamically adjusting the controlled voltage, the correspondence to the output load voltage can be maintained to very low voltage. Preferably, the output load voltage is also dynamically divided to provide a comparison voltage for comparing to the controlled voltage when the output load voltage is high, thereby providing the appropriate output current at high voltage levels. The combination of these two techniques provides a wide output voltage compliance, and a high output impedance.

摘要翻译： 电流镜动态地分配输入源电压，以提供对应于输出负载电压的受控电压。 该受控电压和输出负载电压之间的对应关系确定输出电流与输入电流之间的对应关系。 通过动态调节受控电压，可以将与输出负载电压的对应关系保持在非常低的电压。 优选地，输出负载电压也被动态分配，以在输出负载电压高时提供用于与受控电压进行比较的比较电压，从而在高电压电平下提供适当的输出电流。 这两种技术的组合提供了宽输出电压一致性和高输出阻抗。