公开(公告)号：US20060017602A1

公开(公告)日：2006-01-26

申请号：US11186482

申请日：2005-07-21

Applicant: Giuseppe Puma ,  Duyen Pham-Stabner ,  Dietolf Seippel

Inventor： Giuseppe Puma ,  Duyen Pham-Stabner ,  Dietolf Seippel

IPC: H03M1/34

CPC classification number: H03M1/187 ,  H03G1/0088 ,  H03G3/3052 ,  H03G2201/103 ,  H03G2201/202 ,  H03G2201/307

Abstract: The mobile radio receiver comprises a variable amplifier (3), a first means (9, 10) for comparison of a signal, which is characteristic of the amplitude of a received signal, with at least one analogue comparison value (PDTHR), a second means (13, 14, 17) for comparison of a signal, which is characteristic of the amplitude of a received signal, with at least one digital comparison value (RSSITHR), and a third means (17, 11) for setting the gain, which is driven by the first means (9, 10) and by the second means (13, 14, 17).

Abstract translation: 移动无线电接收机包括可变放大器（3），用于将接收信号幅度特性的信号与至少一个模拟比较值（PDTHR）进行比较的第一装置（9,10），第二装置 用于将接收信号的振幅特性的信号与至少一个数字比较值（RSSITHR）和用于设置增益的第三装置（17,11）进行比较的装置（13,14,17） 其由第一装置（9,10）和第二装置（13,14,17）驱动。

公开(公告)号：US20050200406A1

公开(公告)日：2005-09-15

申请号：US11118336

申请日：2005-05-02

Applicant: Leonard Dauphinee ,  Lawrence Burns

Inventor： Leonard Dauphinee ,  Lawrence Burns

IPC: G01R31/26 ,  G01R31/30 ,  G01R31/317 ,  H01L21/66 ,  H03F3/21 ,  H03G3/30 ,  H04N5/44 ,  H04N5/52 ,  H04N7/10 ,  H03G3/20

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。

公开(公告)号：US20040192237A1

公开(公告)日：2004-09-30

申请号：US10765871

申请日：2004-01-29

Applicant: KABUSHIKI KAISHA TOSHIBA

Inventor： Hiroyuki Kayano ,  Yuta Araki ,  Yuuji Ohtsuka

IPC: H04B001/04

CPC classification number: H03G3/3042 ,  H03F1/0211 ,  H03F1/0277 ,  H03F1/3229 ,  H03F3/72 ,  H03G1/0088 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307

Abstract: An amplifier comprises a first amplifier circuit which amplifies a first signal to output an amplified first signal, a circuit which outputs a second signal corresponding to a difference between the first signal and the amplified first signal, a second amplifier circuit which amplifies the second signal to output an amplified second signal, a combine circuit which outputs an amplified signal by combining the amplified second signal with the amplified first signal, and a controller which controls a supply of a power to the first amplifier circuit and the second amplifier circuit and has a first mode to supply the power to the second amplifier circuit without supplying the power to the first amplifier circuit.

Abstract translation: 放大器包括放大第一信号以输出放大的第一信号的第一放大器电路，输出对应于第一信号和放大的第一信号之间的差的第二信号的电路，将第二信号放大到 输出放大的第二信号，组合电路，其通过将放大的第二信号与放大的第一信号组合来输出放大信号，以及控制器，其控制向第一放大器电路和第二放大器电路供电，并具有第一 模式，以向第二放大器电路供电，而不向第一放大器电路供电。

公开(公告)号：US20040174219A1

公开(公告)日：2004-09-09

申请号：US10799673

申请日：2004-03-15

Applicant: Renesas Technology Corp.

Inventor： Masashi Suzuki ,  Hitoshi Akamine ,  Tetsuaki Adachi ,  Takahiro Sato ,  Masashi Maruyama ,  Susumu Takada

IPC: H03G003/10

CPC classification number: H01L27/0629 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49111 ,  H01L2224/49175 ,  H03F1/301 ,  H03F3/193 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40 ,  H01L2924/00014

Abstract: The number of components of a high frequency power amplifier is reduced. A bias resistance ratio is adjusted in accordance with a change in the threshold voltage Vth of a transistor. There is provided a high frequency power amplifier having a plurality of amplifying systems, characterized in that each of the amplifying systems comprises an input terminal to which a signal to be amplified is supplied, an output terminal, a bias terminal, a plurality of amplifying stages which are sequentially cascaded between the input terminal and output terminal, and a bias circuit connected to the bias terminal and each of the amplifying stages to apply a bias potential to the amplifying stage, in that the amplifying stage includes a control terminal for receiving an input signal and the bias potential supplied to the stage and a first terminal for transmitting an output signal of the stage, and in that a first amplifying stage and a second amplifying stage of each of the amplifying systems are monolithically formed on a single semiconductor chip, and a part of bias resistors that constitute bias circuits of the first amplifying stage and second amplifying stage are monolithically formed on the semiconductor chip.

Abstract translation: 高频功率放大器的组件数量减少。 根据晶体管的阈值电压Vth的变化来调整偏置电阻比。 提供了一种具有多个放大系统的高频功率放大器，其特征在于，每个放大系统包括一个输入端，供给放大信号的输入端，输出端，偏置端，多个放大级 它们在输入端子和输出端子之间顺序级联，以及连接到偏置端子和每个放大级的偏置电路，以向放大级施加偏置电位，因为放大级包括用于接收输入端的控制端子 信号和提供给该级的偏置电位和用于发送该级的输出信号的第一端子，并且每个放大系统的第一放大级和第二放大级单片地形成在单个半导体芯片上，以及 构成第一放大级和第二放大级的偏置电路的偏置电阻的一部分是整体式的 y形成在半导体芯片上。

公开(公告)号：US06560446B2

公开(公告)日：2003-05-06

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。

公开(公告)号：US20020044017A1

公开(公告)日：2002-04-18

申请号：US09961250

申请日：2001-09-25

Inventor： Masashi Suzuki ,  Hitoshi Akamine ,  Tetsuaki Adachi ,  Takahiro Sato ,  Masashi Maruyama ,  Susumu Takada

IPC: H03G003/20

CPC classification number: H01L27/0629 ,  H01L2224/48091 ,  H01L2224/48227 ,  H01L2224/49111 ,  H01L2224/49175 ,  H03F1/301 ,  H03F3/193 ,  H03F2200/294 ,  H03F2200/372 ,  H03G3/3042 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40 ,  H01L2924/00014

Abstract: The number of components of a high frequency power amplifier is reduced. A bias resistance ratio is adjusted in accordance with a change in the threshold voltage Vth of a transistor. There is provided a high frequency power amplifier having a plurality of amplifying systems, characterized in that each of the amplifying systems comprises an input terminal to which a signal to be amplified is supplied, an output terminal, a bias terminal, a plurality of amplifying stages which are sequentially cascaded between the input terminal and output terminal, and a bias circuit connected to the bias terminal and each of the amplifying stages to apply a bias potential to the amplifying stage, in that the amplifying stage includes a control terminal for receiving an input signal and the bias potential supplied to the stage and a first terminal for transmitting an output signal of the stage, and in that a first amplifying stage and a second amplifying stage of each of the amplifying systems are monolithically formed on a single semiconductor chip, and a part of bias resistors that constitute bias circuits of the first amplifying stage and second amplifying stage are monolithically formed on the semiconductor chip.

Abstract translation: 高频功率放大器的组件数量减少。 根据晶体管的阈值电压Vth的变化来调整偏置电阻比。 提供了一种具有多个放大系统的高频功率放大器，其特征在于，每个放大系统包括一个输入端，供给放大信号的输入端，输出端，偏置端，多个放大级 它们在输入端子和输出端子之间顺序级联，以及连接到偏置端子和每个放大级的偏置电路，以向放大级施加偏置电位，因为放大级包括用于接收输入端的控制端子 信号和提供给该级的偏置电位和用于发送该级的输出信号的第一端子，并且每个放大系统的第一放大级和第二放大级单片地形成在单个半导体芯片上，以及 构成第一放大级和第二放大级的偏置电路的偏置电阻的一部分是整体式的 y形成在半导体芯片上。