公开(公告)号：US07474880B2

公开(公告)日：2009-01-06

申请号：US11087704

申请日：2005-03-24

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H01Q11/12 ,  H04B1/02

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。 双模式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：US07392027B2

公开(公告)日：2008-06-24

申请号：US11087574

申请日：2005-03-24

Applicant: Takeshi Ishihara

Inventor： Takeshi Ishihara

IPC: H04B7/00

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: 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中提取控制数据，并执行数据的信息处理。 存储器存储放大器的增益设置值。 控制单元根据预设的控制算法来控制放大器的增益。 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频率的切换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：US20060091957A1

公开(公告)日：2006-05-04

申请号：US10977798

申请日：2004-10-29

Applicant: Hooman Darabi ,  Janice Chiu

Inventor： Hooman Darabi ,  Janice Chiu

IPC: H03G3/10

CPC classification number: H03G1/007 ,  H03G3/3063 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307

Abstract: Methods and systems for processing signals are disclosed herein. In one aspect of the invention a circuit for processing signals may comprise a triple well (TW) NMOS transistor coupled to an amplifier core. The TW NMOS transistor may track process and temperature variations (PVT) of at least one NMOS transistor within the amplifier core. A drain of the TW NMOS transistor may be coupled to a first inductor and the first inductor may be coupled to a first voltage source. The first voltage source may generate a standard voltage of about 1.2V. A source of the TW NMOS transistor may be coupled to a second inductor and the second inductor may be coupled to the first voltage source. A gate of the TW NMOS transistor may be coupled to a second voltage source, where the second voltage source may generate a standard voltage of about 2.5V.

Abstract translation: 本文公开了用于处理信号的方法和系统。 在本发明的一个方面，用于处理信号的电路可以包括耦合到放大器芯的三阱（TW）NMOS晶体管。 TW NMOS晶体管可跟踪放大器核心内的至少一个NMOS晶体管的工艺和温度变化（PVT）。 TW NMOS晶体管的漏极可以耦合到第一电感器，并且第一电感器可以耦合到第一电压源。 第一电压源可产生约1.2V的标准电压。 TW NMOS晶体管的源极可以耦合到第二电感器，并且第二电感器可以耦合到第一电压源。 TW NMOS晶体管的栅极可以耦合到第二电压源，其中第二电压源可以产生约2.5V的标准电压。

公开(公告)号：US20060046666A1

公开(公告)日：2006-03-02

申请号：US10529538

申请日：2004-08-10

Applicant: Yoshihiro Hara ,  Mamoru Arayashiki

Inventor： Yoshihiro Hara ,  Mamoru Arayashiki

IPC: H04B1/04 ,  H01Q11/12

CPC classification number: H03F1/0222 ,  H03F1/02 ,  H03F3/189 ,  H03F3/24 ,  H03G3/004 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/307 ,  H03G2201/40 ,  H04B2001/045

Abstract: An object of the invention is to provide a transmitter high in efficiency, good in linearity and capable of covering an output level in a wide range. Either linear operating mode or saturation operating mode is set as the operating mode of a high-frequency power amplifier (15) on the basis of an operating mode set signal (107). The gain of a variable gain amplifier (14) provided in front of the high-frequency power amplifier (15) and values of output voltage (109) and bias current supplied from a supply voltage/bias current control circuit (17) to the high-frequency power amplifier (15) are switched. The gain of the variable gain amplifier (14) in the saturation operating mode is formed so as to be higher by a predetermined value than that in the linear operating mode. Accordingly, the high-frequency power amplifier 15 operates in the designated operating mode, so that the output transmission power range can be widened.

Abstract translation: 本发明的目的是提供一种效率高，线性好并且能够在宽范围内覆盖输出电平的发射器。 基于操作模式设定信号（107），将线性运行模式或饱和运行模式设置为高频功率放大器（15）的运行模式。 设置在高频功率放大器（15）前面的可变增益放大器（14）的增益和从电源电压/偏置电流控制电路（17）提供给高电平的输出电压（109）和偏置电流的值 频率功率放大器（15）被切换。 饱和运行模式中的可变增益放大器（14）的增益形成为比线性运行模式中的预定值高。 因此，高频功率放大器15在指定的工作模式下工作，从而可以扩大输出传输功率范围。

公开(公告)号：US20050129150A1

公开(公告)日：2005-06-16

申请号：US11007159

申请日：2004-12-09

Applicant: Kenji Terao

Inventor： Kenji Terao

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B1/30 ,  H04B1/707 ,  H04B1/7097 ,  H03D1/00

CPC classification number: H03G3/3078 ,  H03G3/3068 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/307

Abstract: In a slot format of a received signal, AGC gain update timings (t1 to t4) are shifted every time to disperse and reduce an influence of a noise attributable to a direct current component specific to direct conversion which is accompanied by AGC gain update. In particular, in the case where each of slots in the received signal includes an information portion (data) having a larger code correcting capability and an information portion having a smaller code correcting capability (TPC (transmission power control), TFCI (transport format combination indicator), PILOT), the AGC gain update timing is generated while being shifted in the former information portion, thereby reduce the influence of the noise. When the amount of shift of the AGC gain update timing is set to be larger than that of one symbol of the received signal, the influence of the noise accompanied by the AGC gain update is further reduced.

Abstract translation: 在接收信号的时隙格式中，AGC增益更新定时（t 1至t 4）每次都被移位以分散并减小归因于直接转换的特定于直流转换的直流分量的噪声的影响，伴随着AGC增益更新 。 特别地，在接收信号中的每个时隙包括具有较大代码校正能力的信息部分（数据）和具有较小代码校正能力的信息部分（TPC（传输功率控制）），TFCI（传输格式组合 指示器），PILOT）时，在前一个信息部分中移动时产生AGC增益更新定时，从而减少噪声的影响。 当AGC增益更新定时的移位量被设置为大于接收信号的一个符号的移位量时，进一步降低伴随AGC增益更新的噪声的影响。

公开(公告)号：US20050083129A1

公开(公告)日：2005-04-21

申请号：US10960097

申请日：2004-10-08

Applicant: Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

Inventor： Hirokazu Tsurumaki ,  Hiroyuki Nagai ,  Tomio Furuya ,  Makoto Ishikawa

IPC: H03F1/30 ,  H03G1/00 ,  H03G3/10

CPC classification number: H03G1/0005 ,  H03F1/301 ,  H03F2200/294 ,  H03F2200/372 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: In a high frequency power amplifier circuit that supplies a bias to an amplifying FET by a current mirror method, scattering of a threshold voltage Vth due to the scattering of the channel impurity concentration of the FET, and a shift of a bias point caused by the scattering of the threshold voltage Vth and a channel length modulation coefficient λ due to a short channel effect are corrected automatically. The scattering of a high frequency power amplifying characteristic can be reduced as a result.

Abstract translation: 在通过电流镜法向放大FET提供偏置的高频功率放大器电路中，由于FET的沟道杂质浓度的散射引起的阈值电压Vth的散射和由 自动校正阈值电压Vth的散射和由于短通道效应引起的通道长度调制系数λ。 结果可以降低高频功率放大特性的散射。

公开(公告)号：US20050079835A1

公开(公告)日：2005-04-14

申请号：US10505084

申请日：2003-10-02

Applicant: Shinichiro Takabayashi ,  Masato Ukena ,  Masayuki Orihashi ,  Michiaki Matsuo

Inventor： Shinichiro Takabayashi ,  Masato Ukena ,  Masayuki Orihashi ,  Michiaki Matsuo

IPC: H03F1/02 ,  H03F1/32 ,  H03G3/30 ,  H04B1/04 ,  H01Q11/12 ,  H03C1/62 ,  H04B17/00

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，并且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：US06798286B2

公开(公告)日：2004-09-28

申请号：US10353939

申请日：2003-01-30

Applicant: Leonard Dauphinee ,  Lawrence M. Burns

Inventor： Leonard Dauphinee ,  Lawrence M. Burns

IPC: H03G320

CPC classification number: H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L2924/0002 ,  H03F3/211 ,  H03G3/3036 ,  H03G3/3052 ,  H03G2201/307 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

Abstract: A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

Abstract translation: 可变增益放大器（VGA）根据增益放大输入信号，以产生放大信号。 检测器模块检测指示放大信号的功率的功率。 比较器模块将检测到的功率与高阈值和低阈值中间的高阈值，低阈值和目标阈值进行比较。 当比较器模块指示检测到的功率不在高阈值和低阈值之间时，控制器模块改变VGA的增益以驱动检测到的功率朝向中间阈值的方向。

公开(公告)号：US20040162104A1

公开(公告)日：2004-08-19

申请号：US10713613

申请日：2003-11-14

Applicant: InterDigital Technology Corporation

Inventor： Fatih Ozluturk ,  Leonid Kazakevich ,  Kenneth P. Kearney ,  Geetha Lakshmi Narayan ,  Alpaslan Demir ,  Tanbir Haque

IPC: H04B001/40 ,  H04B017/00 ,  H04B001/06 ,  H04B007/00

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 tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.

Abstract translation: 为了补偿由模拟无线电的低成本模拟无线电组件公差引起的性能下降，未来的系统架构（FSA）无线通信收发器采用多种数字信号处理（DSP）技术来补偿这种模拟组件的缺陷， 现代规格可能放宽。 在数字域中提供自动增益控制（AGC）功能，以提供增强的相位和幅度补偿以及许多其他射频（RF）参数。

公开(公告)号：US20040104771A1

公开(公告)日：2004-06-03

申请号：US10353939

申请日：2003-01-30

Applicant: Broadcom Corporation

Inventor： Leonard Dauphinee ,  Lawrence M. Burns

IPC: H03G003/20

CPC classification number: H01L22/20 ,  G01R31/2607 ,  G01R31/30 ,  G01R31/31723 ,  H01L2924/0002 ,  H03F3/211 ,  H03G3/3036 ,  H03G3/3052 ,  H03G2201/307 ,  H04N5/4446 ,  H04N5/52 ,  H04N7/102 ,  H01L2924/00

Abstract: A Variable Gain Amplifier (VGA) amplifies an input signal according to a gain, to produce an amplified signal. A detector module detects a power indicative of a power of the amplified signal. A comparator module compares the detected power to a high threshold, a low threshold and a target threshold intermediate the high and low thresholds. A controller module changes the gain of the VGA so as to drive the detected power in a direction toward the middle threshold when the comparator module indicates the detected power is not between the high and low thresholds.

Abstract translation: 可变增益放大器（VGA）根据增益放大输入信号，以产生放大信号。 检测器模块检测指示放大信号的功率的功率。 比较器模块将检测到的功率与高阈值和低阈值中间的高阈值，低阈值和目标阈值进行比较。 当比较器模块指示检测到的功率不在高阈值和低阈值之间时，控制器模块改变VGA的增益以驱动检测到的功率朝向中间阈值的方向。