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    Linear and Non-Linear Dual Mode Transmitter
    21.
    发明申请
    Linear and Non-Linear Dual Mode Transmitter 有权
    线性和非线性双模发射机

    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。

    Linear and non-linear dual mode transmitter
    22.
    发明授权
    Linear and non-linear dual mode transmitter 有权
    线性和非线性双模发射机

    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。

    Communication semiconductor integrated circuit device and wireless communication system
    23.
    发明申请
    Communication semiconductor integrated circuit device and wireless communication system 失效
    通信半导体集成电路器件和无线通信系统

    公开(公告)号：US20080024227A1

    公开(公告)日：2008-01-31

    申请号：US11902968

    申请日：2007-09-27

    Applicant: Kenji Toyota ,  Kazuaki Hori ,  Kazuhiko Hikasa

    Inventor： Kenji Toyota ,  Kazuaki Hori ,  Kazuhiko Hikasa

    IPC: H03G3/10

    CPC classification number: H03F1/0261 ,  H03F3/245 ,  H03F3/45085 ,  H03G1/00 ,  H03G1/0023 ,  H03G3/3042 ,  H03G2201/40

    Abstract: The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.

    Abstract translation: 本发明提供了一种配备有包括增益控制放大器和偏置电路的高频功率放大器电路的通信半导体集成电路装置，该偏置电路提供这样的偏置电流以线性地改变增益控制放大器的增益，以及无线通信 系统使用相同。 向构成通信高频功率放大器电路的线性放大器提供偏置电流的偏置电流产生电路包括分别与电流值和起始电平不同的多个可变电流源。 这些可变电流源根据输入控制电压进行控制，从而将它们的电流组合成偏置电流。 组合的偏置电流相对于输入控制电压呈指数变化。

    Electronic amplifier with signal gain dependent bias
    24.
    发明授权
    Electronic amplifier with signal gain dependent bias 有权
    具有信号增益相关偏置的电子放大器

    公开(公告)号：US07282996B2

    公开(公告)日：2007-10-16

    申请号：US11105752

    申请日：2005-04-14

    Applicant: Frank J. DeMonte

    Inventor： Frank J. DeMonte

    IPC: H03G3/10 ,  H03G3/30

    CPC classification number: H03G1/0023 ,  H03G3/3036 ,  H03G2201/40

    Abstract: An apparatus having an electronic amplifier with signal gain dependent bias. The electronic apparatus includes the amplifier and a bias state control circuit. The electronic amplifier has a signal gain and a bias state. The signal gain is adjustable to either of at least two different signal gain settings, and the bias state is adjustable to either of at least two different bias state settings. The bias state control circuit has capability of adjusting the bias state setting of the amplifier based upon the signal gain setting to which the amplifier is adjusted.

    Abstract translation: 一种具有信号增益相关偏置的电子放大器的装置。 电子设备包括放大器和偏置状态控制电路。 电子放大器具有信号增益和偏置状态。 信号增益可调节至少两个不同的信号增益设置，偏置状态可调整至至少两个不同的偏置状态设置。 偏置状态控制电路具有根据调整放大器的信号增益设定来调整放大器的偏置状态设定的能力。

    Transmission device, transmission output control method, and radio communication device
    25.
    发明申请
    Transmission device, transmission output control method, and radio communication device 有权
    传输设备，传输输出控制方法和无线电通信设备

    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。

    Dynamically varying linearity system for an RF front-end of a communication device
    27.
    发明授权
    Dynamically varying linearity system for an RF front-end of a communication device 失效
    用于通信设备的RF前端的动态变化的线性系统

    公开(公告)号：US06674999B2

    公开(公告)日：2004-01-06

    申请号：US09811082

    申请日：2001-03-16

    Applicant: Balasubramanian Ramachandran

    Inventor： Balasubramanian Ramachandran

    IPC: H04Q720

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

    Abstract translation: 一种动态变化的线性系统“DVLS”，其能够响应于接收到指示发射机的所需操作模式的条件信号而改变通信设备的射频（RF）前端的线性度。 DVLS可以包括指示期望的操作模式的条件信号和响应于条件信号来调整发射机的线性度的控制器。 条件信号可以响应于用户界面。 控制器响应于条件信号，可以动态地调整发射机的工作电流。

    Communication semiconductor integrated circuit device and wireless communication system
    28.
    发明申请
    Communication semiconductor integrated circuit device and wireless communication system 失效
    通信半导体集成电路器件和无线通信系统

    公开(公告)号：US20030141932A1

    公开(公告)日：2003-07-31

    申请号：US10323819

    申请日：2002-12-20

    Inventor： Kenji Toyota ,  Kazuaki Hori ,  Kazuhiko Hikasa

    IPC: H03G003/10

    CPC classification number: H03F1/0261 ,  H03F3/245 ,  H03F3/45085 ,  H03G1/00 ,  H03G1/0023 ,  H03G3/3042 ,  H03G2201/40

    Abstract: The present invention provides a communication semiconductor integrated circuit device equipped with a high-frequency power amplifier circuit including a gain control amplifier and a bias circuit which supplies such a bias current as to linearly change the gain of the gain control amplifier, and a wireless communication system using the same. A bias current generating circuit which supplies a bias current to a linear amplifier that constitutes the communication high-frequency power amplifier circuit, comprises a plurality of variable current sources respectively different in current value and start level. These variable current sources are controlled according to an input control voltage and thereby combine their currents into a bias current. The combined bias current changes exponentially with respect to the input control voltage.

    Abstract translation: 本发明提供了一种配备有包括增益控制放大器和偏置电路的高频功率放大器电路的通信半导体集成电路装置，该偏置电路提供这种偏置电流以线性地改变增益控制放大器的增益，以及无线通信 系统使用相同。 向构成通信高频功率放大器电路的线性放大器提供偏置电流的偏置电流产生电路包括分别与电流值和起始电平不同的多个可变电流源。 这些可变电流源根据输入控制电压进行控制，从而将它们的电流组合成偏置电流。 组合的偏置电流相对于输入控制电压呈指数变化。

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