公开(公告)号：US20090154597A1

公开(公告)日：2009-06-18

申请号：US12348450

申请日：2009-01-05

Applicant: Meng-An PAN

Inventor： Meng-An PAN

IPC: H04L27/12 ,  H04L27/20 ,  H04B1/04

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：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：US07260374B2

公开(公告)日：2007-08-21

申请号：US10841591

申请日：2004-05-06

Applicant: Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

Inventor： Hyung-Soo Lee ,  Sang-In Cho ,  Kyu-Min Kang ,  Chang-Joo Kim

IPC: H04B1/06

CPC classification number: H04W52/52 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/502 ,  H03G2201/702 ,  H04B1/71637

Abstract: Disclosed is a method for controlling power level of received signal in an ultra wide band transmission system which uses multi frequency bands, and includes a pre-gain controller (PGC) and a voltage gain amplifier (VGA). The method for controlling a power level of a received signal includes the steps of: a) at the PGCs, detecting which multi frequency band is used in a transmitter of the transmission system; b) at the PGCs, obtaining the voltage gain owing to the discrepancy in the power levels of the received signals; and c) at the PGCs, compensating for the power loss based on the voltage gain.

Abstract translation: 公开了一种在使用多频带的超宽带传输系统中控制接收信号的功率电平的方法，包括预增益控制器（PGC）和电压增益放大器（VGA）。 用于控制接收信号的功率电平的方法包括以下步骤：a）在PGC检测在传输系统的发射机中使用哪个多频带; b）在PGC处，由于接收到的信号的功率电平的差异而获得电压增益; 和c）在PGC处，基于电压增益来补偿功率损耗。

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：US20050258896A1

公开(公告)日：2005-11-24

申请号：US11096854

申请日：2005-04-01

Applicant: Thomas Bardsley ,  Matthew Cordrey-Gale ,  James Mason ,  Philip Murfet ,  Gareth Nicholls

Inventor： Thomas Bardsley ,  Matthew Cordrey-Gale ,  James Mason ,  Philip Murfet ,  Gareth Nicholls

IPC: H03F1/02 ,  H03F1/14 ,  H03F3/21 ,  H03F3/45 ,  H03F3/68 ,  H03F3/72 ,  H03G1/00 ,  H03G3/00 ,  H03G3/20

CPC classification number: H03F3/45475 ,  H03F1/0277 ,  H03F3/211 ,  H03F3/45179 ,  H03F3/72 ,  H03F2203/45138 ,  H03G1/0029 ,  H03G1/0088 ,  H03G3/001 ,  H03G2201/103 ,  H03G2201/504

Abstract: A method of varying the gain of an amplifier and an amplifier array are provided. The amplifier array includes two or more amplifier stages (201, 202) connected in parallel with each amplifier stage having a gain control means. Input signal means (203, 204) are provided for each amplifier stage with the input signals of the amplifier stages being of different amplitude. Means for enabling and disabling an amplifier stage (216) are provided and means for summing the outputs of the enabled amplifier stages obtain an output signal (212). The gain of the amplifier array has a range from a low gain setting with a first amplifier stage (202) enabled, through increasing gain settings as the gain of the first amplifier stage is increased from a minimum to a maximum gain, a second amplifier stage (201) can then be enabled in addition to the first amplifier stage and the gain of the second amplifier stage increased from a minimum to a maximum gain, further amplifier stages are enabled as available up to a maximum gain setting for the amplifier array. Each amplifier stage that is enabled has a decreasingly attenuated input signal and a final amplifier stage to be enabled has a full input signal (203).

Abstract translation: 提供了改变放大器和放大器阵列的增益的方法。 放大器阵列包括与具有增益控制装置的每个放大器级并联连接的两个或更多个放大器级（201,202）。 为每个放大器级提供输入信号装置（203,204），放大器级的输入信号具有不同的幅度。 提供了用于启用和禁用放大器级（216）的装置，用于对使能的放大器级的输出进行求和以获得输出信号（212）的装置。 放大器阵列的增益具有从具有第一放大级（202）使能的低增益设置的范围，通过当第一放大器级的增益从最小增益增加到最大增益时增加增益设置，第二放大器级 （201）除了第一放大器级以及第二放大器级的增益从最小增益增加到最大增益之外，还可以使能另外的放大器级，直至达到放大器阵列的最大增益设置。 启用的每个放大器级具有递减衰减的输入信号，并且待使能的最终放大器级具有完整输入信号（203）。

公开(公告)号：US20050143942A1

公开(公告)日：2005-06-30

申请号：US11040354

申请日：2005-01-21

Applicant: Kumen Blake ,  James Nolan

Inventor： Kumen Blake ,  James Nolan

IPC: G06F19/00 ,  H03F3/00 ,  H03G3/00 ,  H03G3/30

CPC classification number: H03G3/001 ,  H03G3/3026 ,  H03G2201/103 ,  H03G2201/502

Abstract: An amplifier having programmable operational characteristics and a serial communications interface are fabricated on an integrated circuit (IC). The serial communications interface controls the operational characteristics, e.g., gain, frequency response, etc., of the amplifier. A multiplexer (MUX) may also be included on the IC and may be controlled by the serial communications interface. Status of the amplifier may also be obtained through the serial communications interface. The pin count of the IC package may be kept to a minimum by using the serial communications interface.

Abstract translation: 在集成电路（IC）上制造具有可编程操作特性的放大器和串行通信接口。 串行通信接口控制放大器的操作特性，例如增益，频率响应等。 多路复用器（MUX）也可以被包括在IC上并且可以由串行通信接口来控制。 也可以通过串行通信接口获得放大器的状态。 使用串行通信接口可以将IC封装的引脚数保持在最小值。

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：US06906584B1

公开(公告)日：2005-06-14

申请号：US10732106

申请日：2003-12-10

Applicant: Mark Moffat ,  Marcus Granger-Jones

Inventor： Mark Moffat ,  Marcus Granger-Jones

IPC: H03G1/00 ,  H03G3/20 ,  H03G3/30 ,  H03F3/45

CPC classification number: H03G3/3078 ,  H03F2203/7215 ,  H03F2203/7218 ,  H03G1/0088 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/305 ,  H03G2201/502

Abstract: The present invention provides a switchable gain amplifier comprising a high-pass filter pole. The switchable gain amplifier comprises first and second input nodes for receiving first and second components of a differential input signal. A first input terminal of a first differential amplifier is coupled to the first input node, and a first input terminal of a second differential amplifier is coupled to the second input node. A first variable resistance is coupled between the first input terminal of the first differential amplifier and a second input terminal of the first differential amplifier. A second variable resistance is coupled between the first input terminal of the second differential amplifier and a second input terminal of the second differential amplifier. A differential capacitor is coupled between the second input terminal of the first differential amplifier and the second input terminal of the second differential amplifier.

Abstract translation: 本发明提供一种包括高通滤波器极的可切换增益放大器。 可切换增益放大器包括用于接收差分输入信号的第一和第二分量的第一和第二输入节点。 第一差分放大器的第一输入端耦合到第一输入节点，第二差分放大器的第一输入端耦合到第二输入节点。 第一可变电阻耦合在第一差分放大器的第一输入端和第一差分放大器的第二输入端之间。 第二可变电阻耦合在第二差分放大器的第一输入端和第二差分放大器的第二输入端之间。 差分电容器耦合在第一差分放大器的第二输入端和第二差分放大器的第二输入端之间。