会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 123. 发明专利
    • Transmitter-receiver
    • 发射机接收机
    • JP2000078072A
    • 2000-03-14
    • JP24286398
    • 1998-08-28
    • Hitachi Ltd株式会社日立製作所
    • TAKEI TAKESHI
    • H01Q3/36H01Q1/24H01Q3/26H01Q3/30H01Q21/00H03F1/32H03F3/60H04B1/00H04B1/04H04B7/08H04B7/155H04B7/26H04Q7/22H04Q7/24H04Q7/26H04Q7/30
    • H01Q3/30H01Q1/246H01Q3/26H01Q21/0025H03F1/3223H03F1/3229H03F3/24H03F3/602H03F2200/372H03F2201/3218H04B1/00H04B2001/0441
    • PROBLEM TO BE SOLVED: To reduce the power consumption, size and weight of a transmitter- receiver by comparing the output of a power detector which is connected to the output part of a power amplifier with the control signal of a tilt angle setting circuit which is connected to every transmitting/receiving signal amplifier and controlling the phase shift value of a variable phase shift circuit based on a phase shift value table.
      SOLUTION: The input terminal of a 5th variable phase shift/amplifier 52 is connected to a transmitting signal input terminal 1, a 6th branching filter 61 is connected to a feedforward amplifier input terminal 5, the input terminal of a linear power amplifier 10 is connected to the output terminal of the filter 61 and the output terminal of the amplifier 10 is connected to the input terminal of a 5th branching filter 51 via a feedforward amplifier output terminal 6. Then one of both branches of a branching circuit 64 is connected to the output terminal of the filter 51 via a transmitting filter 63, a 1st antenna is connected to a common branch of the circuit 64 via a transmitting/receiving signal input/ output terminal 2, the input terminal of a 4th amplifier 74 is connected to the other branch of the circuit 64 via a receiving filter 65 and a receiving signal output terminal 4 is connected to the output terminal of the amplifier 74.
      COPYRIGHT: (C)2000,JPO
    • 要解决的问题:通过将连接到功率放大器的输出部分的功率检测器的输出与倾斜角度设置电路的控制信号进行比较来减小发射机 - 接收机的功耗,尺寸和重量, 连接到每个发送/接收信号放大器,并且基于相移值表来控制可变相移电路的相移值。 解决方案:第五可变相移放大器52的输入端连接到发送信号输入端1,第六分波器61连接到前馈放大器输入端5,线性功率放大器10的输入端连接 到滤波器61的输出端子,放大器10的输出端经由前馈放大器输出端子6连接到第5分路滤波器51的输入端子。然后,分支电路64的两个分支中的一个连接到 输出端子经由发送滤波器63,第一天线经由发送/接收信号输入/输出端子2连接到电路64的公共支路,第四放大器74的输入端连接到另一个 通过接收滤波器65和接收信号输出端子4的电路64的分支连接到放大器74的输出端。
    • 125. 发明专利
    • Amplification device and amplification method
    • 放大器件和放大方法
    • JP2012142770A
    • 2012-07-26
    • JP2010293839
    • 2010-12-28
    • Fujitsu Ltd富士通株式会社
    • KAWASAKI TOSHIO
    • H03F1/02H03F1/32H03F3/24H03F3/68
    • H03F1/0294H03F1/3229H03F3/189H03F3/211H03F3/24H03F2201/3215
    • PROBLEM TO BE SOLVED: To suppress a deterioration of an amplified output signal.SOLUTION: A signal separation section 21 separates a first signal and a second signal from an input signal. A first signal generation section 22 generates a first cancellation signal capable of suppressing ringing caused by the processing of the first signal on the basis of the first signal. A first synthesis section 23 synthesizes the first signal and the first cancellation signal. A first amplification section 24 amplifies an output signal of the first synthesis section 23. A second signal generation section 25 generates a second cancellation signal capable of suppressing ringing caused by the processing of the second signal on the basis of the second signal. A second synthesis section 26 synthesizes the second signal and the second cancellation signal. A second amplification section 27 amplifies an output signal of the second synthesis section 26. A third synthesis section 28 synthesizes an output signal of the first amplification section 24 and an output signal of the second amplification section 27.
    • 要解决的问题:抑制放大的输出信号的劣化。 解决方案:信号分离部分21从输入信号中分离第一信号和第二信号。 第一信号生成部22生成能够基于第一信号抑制由第一信号的处理引起的振铃的第一抵消信号。 第一合成部分23合成第一信号和第一消除信号。 第一放大部分24放大第一合成部分23的输出信号。第二信号产生部分25产生能够基于第二信号抑制由第二信号的处理引起的振铃的第二抵消信号。 第二合成部分26合成第二信号和第二消除信号。 第二放大部分27放大第二合成部分26的输出信号。第三合成部分28合成第一放大部分24的输出信号和第二放大部分27的输出信号。(C) 2012年,JPO&INPIT
    • 127. 发明专利
    • Highly efficient feedforward amplifier and control method thereof
    • 高效的前置放大器及其控制方法
    • JP2009200678A
    • 2009-09-03
    • JP2008038418
    • 2008-02-20
    • Ntt Docomo Inc株式会社エヌ・ティ・ティ・ドコモ
    • SUZUKI YASUNORINARAHASHI SHOICHI
    • H03F1/32
    • H03F1/3229H03F1/0261H03F3/24H03F2200/18H03F2200/451
    • PROBLEM TO BE SOLVED: To provide a feedforward amplifier for improving the entire efficiency without generating complicated nonlinear distortion.
      SOLUTION: In the feedforward amplifier comprising a distortion detecting circuit (10) and a distortion eliminating circuit (20), a harmonic reaction amplifier (130) is used as a main amplifier of the distortion detecting circuit. A control unit (43) obtains an adjacent channel leakage power ratio (ACLR) and power efficiency from the output of the feedforward amplifier and controls the gate bias voltages of two microwave transistors (33A and 33B) of the harmonic reaction amplifier to maximize the efficiency under the condition that the ACLR is less than or equal to a reference value.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种用于在不产生复杂的非线性失真的情况下提高整体效率的前馈放大器。 解决方案:在包括失真检测电路(10)和失真消除电路(20)的前馈放大器中,使用谐波反应放大器(130)作为失真检测电路的主放大器。 控制单元(43)从前馈放大器的输出端获得相邻信道泄漏功率比(ACLR)和功率效率,并控制谐波反应放大器的两个微波晶体管(33A和33B)的栅极偏置电压,以使效率最大化 在ACLR小于或等于参考值的条件下。 版权所有(C)2009,JPO&INPIT