公开(公告)号：EP1705800A2

公开(公告)日：2006-09-27

申请号：EP05026024.9

申请日：2005-11-29

Applicant: Broadcom Corporation

Inventor： Pan, Meng-An

IPC: H04B1/04 ,  H03F1/32

CPC classification number: H04B1/0003 ,  H03F1/0261 ,  H03F3/45188 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307 ,  H03G2201/40 ,  H04B1/0475

Abstract: A transmitter includes a dual mode modulator and an amplifier coupled to the dual mode modulator. The dual mode modulator implements a linear modulation scheme during a first mode of the modulator to produce a variable envelope modulated signal. The dual mode modulator implements a non-linear modulation scheme during a second mode of the modulator to produce a constant envelope modulated signal. The amplifier is biased as a linear amplifier during the first mode of the modulator and is biased as a non-linear amplifier during the second mode of the modulator. A feed-forward connection between the dual mode modulator and the amplifier is used to indicate a change in modulation mode and to adjust the bias of the amplifier. A power of the constant envelope modulated signal is increased such that an operating point of the amplifier remains substantially constant during the first and second modes of the modulator.

Abstract translation: 发射机包括耦合到双模调制器的双模调制器和放大器。 双模式调制器在调制器的第一模式期间实现线性调制方案，以产生可变包络调制信号。 双模调制器在调制器的第二模式期间实现非线性调制方案，以产生恒定的包络调制信号。 放大器在调制器的第一模式期间被偏置为线性放大器，并且在调制器的第二模式期间被偏置为非线性放大器。 双模式调制器和放大器之间的前馈连接用于指示调制模式的变化并调整放大器的偏置。 恒定包络调制信号的功率增加，使得放大器的工作点在调制器的第一和第二模式期间保持基本恒定。

公开(公告)号：EP1382171A4

公开(公告)日：2006-06-07

申请号：EP02715157

申请日：2002-03-18

Applicant: SKYWORKS SOLUTIONS INC

Inventor： RAMACHANDRAN BALASUBRAMANIAN

IPC: H03G3/00 ,  H03G3/30 ,  H04B1/10 ,  H04B7/005 ,  H04L1/00 ,  H04W52/08 ,  H04W52/26 ,  H04L27/30 ,  H04B7/26 ,  H04L7/00

CPC classification number: H04W52/267 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H03G2201/508 ,  H04B1/109 ,  H04L1/0001 ,  H04W52/08 ,  H04W52/38

Abstract: A dynamically varying linearity system 'DVLS' (102) capable of varying the linearity of a radio frequency (RF) front-end (112) of a communication device (100) responsive to receiving a condition signal indicating a desired mode of operation of a transmitter (112). The DVLS may include a condition signal indicative of the desired mode of operation and a controller (110) that adjusts the linearity of the transmitter responsive to the condition signal. The condition signal may be responsive to a user interface (106). The controller, responsive to the condition signal, may dynamically adjust the operating current of the transmitter.

公开(公告)号：EP1568192A1

公开(公告)日：2005-08-31

申请号：EP03783365.4

申请日：2003-11-14

Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

Inventor： OZLUTURK, Fatih ,  KAZAKEVICH, Leonid ,  HAQUE, Tanbir ,  DEMIR, Alpaslan ,  NARAYAN, Geetha, Lakshmi ,  KEARNEY, Kenneth

IPC: H04M1/00

CPC classification number: H03G3/001 ,  H03D3/008 ,  H03D3/009 ,  H03G3/3068 ,  H03G3/3089 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307 ,  H03G2201/508 ,  H04B1/30 ,  H04L2027/0016 ,  H04L2027/0024

Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.

公开(公告)号：EP1548949A1

公开(公告)日：2005-06-29

申请号：EP03753987.1

申请日：2003-10-02

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： TAKABAYASHI, Shinichiro ,  UKENA, Masato ,  ORIHASHI, Masayuki ,  MATSUO, Michiaki

IPC: H04B1/04 ,  H03G3/20

CPC classification number: H03G3/3042 ,  H03F1/0211 ,  H03F1/025 ,  H03F1/0255 ,  H03F1/32 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/24 ,  H03F2200/102 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/0433

Abstract: A transmitting method and a transmitter apparatus, which need no manual adjustment, are disclosed. A delay amount of a delay means is automatically adjusted such that an out-of-band distortion component of a transmission signal is minimized, and a correct timing is produced by the method and the apparatus. In this transmitter apparatus, a first delay means adjusts a control timing over a voltage that controls a power amplifying means, and a distributor distributes an output from the power amplifying means in order to feedback parts of the output. A distortion adjusting means calculates a distortion component of the transmission signal by using the signal fed back by the distributor, and adjusts automatically a delay amount of the first delay means so as to minimize the distortion component. This structure allows eliminating manual adjustment, and obtaining high power-efficiency with fewer distortions.

Abstract translation: 公开了不需要手动调整的发送方法和发送装置。 自动调整延迟装置的延迟量，使得发送信号的带外失真分量最小化，并且通过该方法和装置产生正确的定时。 在该发射机装置中，第一延迟装置调节控制功率放大装置的电压的控制定时，分配器分配来自功率放大装置的输出，以反馈输出部分。 失真调整装置通过使用由分配器反馈的信号来计算发送信号的失真分量，并且自动调整第一延迟装置的延迟量，以使失真分量最小化。 这种结构允许消除手动调整，并且以较少的失真获得高功率效率。

公开(公告)号：EP1523094A1

公开(公告)日：2005-04-13

申请号：EP03292472.2

申请日：2003-10-07

Applicant: TEXAS INSTRUMENTS INCORPORATED ,  TEXAS INSTRUMENTS FRANCE

Inventor： Carpineto, Lorenzo, Les jardins de Beauvert ,  Duvivier, Eric, Résidence le Bosquet ,  Cipriani, Stéfane

IPC: H03F3/45 ,  H03F1/02 ,  H03G3/20 ,  H03G3/30

CPC classification number: H03F1/0272 ,  H03F3/45188 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/45048 ,  H03F2203/45396 ,  H03G3/3036 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: A low noise amplifier circuit (10) includes an attenuator (12) for receiving a calibration signal and generating an attenuated calibration signal. A low noise amplifier (14) amplifies the attenuated calibration signal in calibration mode or amplifies a functional signal in functional mode. In calibration mode, a envelope detector/comparator (16) compares the calibration signal with the output of the low noise amplifier and generates a compensation signal indicating a deviation between the two signals. The gain of the low noise amplifier is adjusted responsive to the compensation signal.

Abstract translation: 低噪声放大器电路（10）包括用于接收校准信号并产生衰减的校准信号的衰减器（12）。 低噪声放大器（14）在校准模式下放大衰减的校准信号，或者在功能模式下放大功能信号。 在校准模式中，包络检测器/比较器（16）将校准信号与低噪声放大器的输出进行比较，并产生指示两个信号之间的偏差的补偿信号。 响应于补偿信号调整低噪声放大器的增益。

公开(公告)号：EP1679792B1

公开(公告)日：2014-11-12

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Zoran Corporation

Inventor： Hennig, Andreas G.

IPC: H03G3/30

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

公开(公告)号：EP1548949A4

公开(公告)日：2009-06-24

申请号：EP03753987

申请日：2003-10-02

Applicant: PANASONIC CORP

Inventor： TAKABAYASHI SHINICHIRO ,  UKENA MASATO ,  ORIHASHI MASAYUKI ,  MATSUO MICHIAKI

IPC: H03F1/02 ,  H03F1/32 ,  H03G3/30 ,  H04B1/04 ,  H03G3/20

CPC classification number: H03G3/3042 ,  H03F1/0211 ,  H03F1/025 ,  H03F1/0255 ,  H03F1/32 ,  H03F1/3247 ,  H03F1/3282 ,  H03F1/34 ,  H03F3/24 ,  H03F2200/102 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/0433

Abstract: A transmitting method and a transmitter apparatus wherein no manual adjustments are required, the delay amount of delay means is automatically so adjusted as to minimize distortion components outside the band of signals to be transmitted, and wherein correct timing is realized. In this transmitter apparatus, first delay means adjusts the control timing of a voltage that controls power-amplifying means. A distributor feeds back a part of an output from the power-amplifying means. Distortion-adjusting means uses a signal fed back by the distributor to calculate the distortion components of a transmitted signal, and automatically so adjusts the delay amount of the first delay means as to minimize the distortion components. This eliminates the necessity of manual adjustments, reduces the distortion, and provides a high efficiency of power supply.

公开(公告)号：EP1583232A3

公开(公告)日：2007-07-18

申请号：EP05090077.8

申请日：2005-03-29

Applicant: NEC CORPORATION

Inventor： Ishihara, Takeshi, c/o NEC Corporation

IPC: H03G3/30 ,  H04B7/005

CPC classification number: H04W52/22 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/702 ,  H03M1/122 ,  H03M1/18 ,  H03M1/183

Abstract: An automatic gain control device includes an amplifier for a reception signal, a signal processing unit, a memory, and a control unit. The amplifier can set a gain. The signal processing unit extracts control data from an output from the amplifier and performs information processing for the data. The memory stores the gain setting value of the amplifier. The control unit controls the gain of the amplifier in accordance with a preset control algorithm. On the basis of the result obtained when the control unit computes a gain setting value stored in the memory in accordance with a preset algorithm, the control unit controls the gain of the amplifier in correspondence with operation of switching the frequency of a reception signal, which is accompanied by different frequency monitoring in the compressed mode by the signal processing unit. A radio communication terminal, a control method for an automatic gain control device, a control program for an automatic gain control device, an automatic gain control method, a radio communication system, and a radio communication method are also disclosed.

Abstract translation: 一种自动增益控制装置，包括用于接收信号的放大器，信号处理单元，存储器和控制单元。 放大器可以设置增益。 信号处理单元从放大器的输出提取控制数据，并执行数据的信息处理。 存储器存储放大器的增益设定值。 控制单元根据预设的控制算法控制放大器的增益。 基于当控制单元根据预设算法计算存储在存储器中的增益设定值时获得的结果，控制单元根据接收信号的频率切换的操作来控制放大器的增益，其中 伴随着信号处理单元在压缩模式下的不同频率监视。 还公开了无线电通信终端，自动增益控制装置的控制方法，自动增益控制装置的控制程序，自动增益控制方法，无线电通信系统和无线电通信方法。

公开(公告)号：EP1679792A3

公开(公告)日：2006-11-22

申请号：EP05251659.8

申请日：2005-03-18

Applicant: Microtune (Texas) L.P.

Inventor： Hennig, Andreas G.

IPC: H03G3/30

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307 ,  H03G2201/706

Abstract: A receiver for processing a signal comprises a first amplifier circuit and a second amplifier circuit. The first amplifier circuit is operated in association with a first gain profile. The second amplifier circuit is operated in association with a second gain profile. The receiver further comprises a gain control circuit that determines a quality indicator associated with a modulated signal. The gain control circuit adjusts the first gain profile and the second gain profile based at least in part upon the determined quality indicator.

Abstract translation: 用于处理信号的接收器包括第一放大器电路和第二放大器电路。 第一放大器电路与第一增益分布相关联地操作。 第二放大器电路与第二增益分布相关联地操作。 接收器还包括确定与调制信号相关联的质量指示符的增益控制电路。 增益控制电路至少部分地基于所确定的质量指标来调整第一增益曲线和第二增益曲线。

公开(公告)号：EP1584169A4

公开(公告)日：2006-08-02

申请号：EP04703677

申请日：2004-01-20

Applicant: THOMSON LICENSING

Inventor： BOUILLET AARON ,  MAYER MATTHEW

IPC: H03G3/30 ,  H04L27/08

CPC classification number: H03G3/3068 ,  H03G2201/103 ,  H03G2201/204 ,  H03G2201/305 ,  H03G2201/307

Abstract: A method and apparatus for generating the adaptive gain control signals in a communications receiver is disclosed. The present invention can be used with existing two-stage gain architectures, and overcomes many undesirable characteristics of the previous mechanism. An apparatus is presented wherein each of a plurality of RF AGC gain controllable amplifiers (140 and 150) are individually controlled by individual AGC control signals generated by an AGC controller (105) so that the level of the output signal from each of the RF AGC gain controllable amplifiers is individually optimized for tuner performance (170 and 190).