公开(公告)号：US09001942B2

公开(公告)日：2015-04-07

申请号：US13924760

申请日：2013-06-24

Applicant: Starkey Laboratories, Inc.

Inventor： Jeffrey Paul Solum

IPC: H04L27/08 ,  H04B1/10 ,  H03G3/30 ,  H04L27/38

CPC classification number: H04B1/1027 ,  H03G3/3052 ,  H03G2201/202 ,  H03G2201/206 ,  H04B1/109 ,  H04L27/3809

Abstract: One embodiment of the present subject matter includes a method of receiving an input signal. The method, in various embodiments, includes detecting a peak of the input signal and detecting an envelope of the input signal. In various embodiments, the peak and envelope are used to identify out-of-band blocking signals and to adjust gain control. The method also includes comparing the peak to a first threshold Tp and comparing the envelope to a second threshold Te. In the method, if the peak is above the first threshold and the envelope is below the second threshold, then ignoring the input signal. If the envelope is above the second threshold, the method includes applying automatic gain control to decode information encoded in the input signal.

Abstract translation: 本主题的一个实施例包括接收输入信号的方法。 在各种实施例中，该方法包括检测输入信号的峰值并检测输入信号的包络。 在各种实施例中，峰值和包络用于识别带外阻塞信号并调整增益控制。 该方法还包括将峰值与第一阈值Tp进行比较并将包络与第二阈值Te进行比较。 在该方法中，如果峰值高于第一阈值并且包络低于第二阈值，则忽略输入信号。 如果信封高于第二阈值，则该方法包括应用自动增益控制来对输入信号中编码的信息进行解码。

公开(公告)号：US08559903B2

公开(公告)日：2013-10-15

申请号：US13299581

申请日：2011-11-18

Applicant: Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

Inventor： Henk Ten Pierick ,  Gertjan Groot Hulze ,  Erik Keukens

IPC: H04B1/06 ,  H04B7/00

CPC classification number: H03G3/3052 ,  H03G3/301 ,  H03G2201/202 ,  H03G2201/302 ,  H03G2201/606

Abstract: An automatic gain control circuit is provided for an input signal in the form of a dc reference level and a superposed amplitude modulated ac data signal. A feedforward AGC loop has a low pass filter for deriving the level of attenuation from the attenuated dc reference level. A multiplier value (G) is based on the reciprocal of the level of attenuation (α) and this multiplier enables an output signal to be generated comprising a constant multiple (DG) of the input signal.

Abstract translation: 为直流基准电平和重叠幅度调制交流数据信号形式的输入信号提供自动增益控制电路。 前馈AGC环路具有用于从衰减的直流参考电平导出衰减电平的低通滤波器。 乘数值（G）基于衰减电平（α）的倒数，并且该乘法器使得能够产生包括输入信号的恒定倍数（DG）的输出信号。

公开(公告)号：US08244193B2

公开(公告)日：2012-08-14

申请号：US12348450

申请日：2009-01-05

Applicant: Meng-An Pan

Inventor： Meng-An Pan

IPC: H01Q11/12 ,  H04K3/00

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：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：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：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。

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。