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
    • 1. 发明授权
    • Dual band transmitter having filtering coupler
    • 具有滤波耦合器的双频带发射机
    • US07505743B2
    • 2009-03-17
    • US10849230
    • 2004-05-20
    • Young Hoon KimKi Joong KimDae Hun HurWoo Jin Byun
    • Young Hoon KimKi Joong KimDae Hun HurWoo Jin Byun
    • H04B1/02
    • H04B1/0458H04B1/006
    • The invention provides a dual band transmitter available for a mobile communication terminal such as mobile phone, in which a first RF amplifier 111 amplifies the power of a high band signal BS1 at a first amplification factor that is determined according to a first bias voltage. A second RF amplifier 121 amplifies the power of a low band signal BS2 at a second amplification factor determined according to a second bias voltage. A first coupling capacitor C11 couples an output signal from the first RF amplifier 111. A second coupling capacitor C21 couples an output signal from the second RF amplifier 121. A filtering coupler 140 has a high pass filter FT1 for a first coupled signal from the first coupling capacitor C11 and a low pass filter FT2 for a second coupled signal from the second coupling capacitor C21. A power amplifier controller 150 compares the magnitudes of filtered signals from the filtering coupler 140 with preset reference values to obtain difference values, and adjusts the bias voltages of the first and second RF amplifiers 111 and 121 based upon the difference values to control the first and second amplification factors.
    • 本发明提供一种可用于诸如移动电话的移动通信终端的双频带发射机,其中第一RF放大器111以根据第一偏置电压确定的第一放大因子放大高频带信号BS1的功率。 第二RF放大器121以根据第二偏置电压确定的第二放大因数放大低频信号BS2的功率。 第一耦合电容器C11耦合来自第一RF放大器111的输出信号。第二耦合电容器C21耦合来自第二RF放大器121的输出信号。滤波耦合器140具有用于来自第一RF放大器111的第一耦合信号的高通滤波器FT1 耦合电容器C11和低通滤波器FT2,用于来自第二耦合电容器C21的第二耦合信号。 功率放大器控制器150将来自滤波耦合器140的滤波信号的幅度与预设参考值进行比较以获得差值,并且基于差值来调整第一和第二RF放大器111和121的偏置电压,以控制第一和第 第二放大因子。
    • 2. 发明授权
    • Directional coupler and dual-band transmitter using the same
    • 定向耦合器和双频发射器使用相同
    • US07187910B2
    • 2007-03-06
    • US10859147
    • 2004-06-03
    • Ki Joong KimDae Heon HurWoo Jin Byun
    • Ki Joong KimDae Heon HurWoo Jin Byun
    • H04B1/02
    • H01P5/185
    • Disclosed herein are a directional coupler which is implemented with strip lines for signal coupling and inter-digital capacitors for phase compensation, and a dual-band transmitter using the same. The directional coupler includes a first transmission device, a first directional coupling device for coupling a part of a signal from the first transmission device, a first inter-digital capacitor connected between the first transmission device and the first directional coupling device, a second transmission device, a second directional coupling device for coupling a part of a signal from the second transmission device, and a second inter-digital capacitor connected between the second transmission device and the second directional coupling device.
    • 这里公开了一种定向耦合器,其用于用于信号耦合的带状线和用于相位补偿的数字间电容器,以及使用其的双频发射器。 定向耦合器包括第一传输设备,用于耦合来自第一传输设备的信号的一部分的第一定向耦合设备,连接在第一传输设备和第一定向耦合设备之间的第一数字间电容器,第二传输设备 ,用于耦合来自第二传输装置的信号的一部分的第二定向耦合装置和连接在第二传输装置和第二定向耦合装置之间的第二数字间电容器。
    • 7. 发明授权
    • Multi-stage CMOS power amplifier
    • 多级CMOS功率放大器
    • US08022762B2
    • 2011-09-20
    • US12823420
    • 2010-06-25
    • Youn Suk KimHyo Gun BaeJoong Jin NamJun Goo WonKi Joong Kim
    • Youn Suk KimHyo Gun BaeJoong Jin NamJun Goo WonKi Joong Kim
    • H03F1/00
    • H03F3/45179H03F1/3205H03F3/193H03F3/245H03F3/3022H03F2200/411H03F2200/516H03F2200/534H03F2200/537H03F2200/541
    • There is provided a multi-stage CMOS power amplifier including: a driver amplifier having differential output terminals, inverting differential signals input through first and second input terminals and outputting the respective inverted signals through the differential output terminals; a transformer for power matching having a primary coil connected between the differential output terminals of the driver amplifier and a secondary coil coupled with the primary coil using electromagnetic induction, having a predetermined turns ratio to the primary coil, and connected to a direct current (DC) tuning voltage terminal; and a power amplifier power-amplifying differential signals passing through one end and the other end of the secondary coil of the transformer and outputting the respective power-amplified differential signals through first and second output terminals.
    • 提供了一种多级CMOS功率放大器,包括:具有差分输出端的驱动放大器,通过第一和第二输入端输入的差分信号反相,并通过差分输出端输出各反相信号; 一种用于功率匹配的变压器,其具有连接在所述驱动放大器的差分输出端子之间的初级线圈和使用电磁感应耦合到所述初级线圈的次级线圈,所述次级线圈具有与所述初级线圈的预定匝数比,并且连接到直流 )调谐电压端子; 以及功率放大器功率放大差分信号,其通过变压器的次级线圈的一端和另一端,并通过第一和第二输出端输出相应的功率放大差分信号。
    • 8. 发明授权
    • Power amplifier
    • 功率放大器
    • US08242846B2
    • 2012-08-14
    • US13012295
    • 2011-01-24
    • Ki Joong KimYoun Suk KimYoung Jean SongJae Hyouck ChoiJun Goo Won
    • Ki Joong KimYoun Suk KimYoung Jean SongJae Hyouck ChoiJun Goo Won
    • H03F3/68
    • H03F1/22H03F3/68
    • There is provided a power amplifier capable of improving harmonics characteristics of an output signal of an amplifier circuit by compensating a phase of the output signal. A power amplifier according to an aspect of the invention may include: an amplification section having a plurality of amplification units each amplifying a radio frequency (RF) signal according to a gain being controlled; a phase correction section performing phase correction by removing harmonic components of respective output signals from the plurality of amplification units of the amplification section; and a coupling section coupling the respective output signals phase-corrected by the phase correction section.
    • 提供了能够通过补偿输出信号的相位来改善放大器电路的输出信号的谐波特性的功率放大器。 根据本发明的一个方面的功率放大器可以包括:放大部分,具有多个放大单元,每个放大单元根据被控制的增益放大射频(RF)信号; 相位校正部,通过从放大部的多个放大部除去各输出信号的谐波分量来进行相位校正; 以及耦合部分,其耦合由相位校正部分相位校正的各个输出信号。