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    • 1. 发明授权
    • High-frequency composite part
    • 高频复合件
    • US5903421A
    • 1999-05-11
    • US949285
    • 1997-10-21
    • Koji FurutaniNorio NakajimaHidefumi Suzaki
    • Koji FurutaniNorio NakajimaHidefumi Suzaki
    • H01P1/15H04B1/44H05K1/00H05K1/02H02H9/00H02H1/00
    • H01P1/15H05K1/0237H05K1/0298
    • A high-frequency composite part includes a high-frequency switch and an amplifier in a transmission circuit side among high-frequency parts constituting a PHS portable telephone. In the telephone, the high-frequency switch is used for switching between the connection of the transmission circuit Tx and an antenna, and the connection of a receiving circuit Rx and the antenna. The amplifier at the Tx side amplifies a signal to be transmitted which has been converted into an RF signal and passes through a filter at the Tx side, and sends it to the high-frequency switch. A high-frequency composite part may comprise: a multilayer board formed by laminating a plurality of dielectric layers; a high-frequency switch formed of a diode mounted on said multilayer board and a transmission line and a capacitor comprising interconnected electrodes formed on respective layers within said multilayer board; and an amplifier formed of a transistor mounted on said multilayer board and a transmission line and a capacitor comprising interconnected electrodes formed on respective layers within said multilayer board. In the high-frequency composite part, the amplifier may be comprised in a transmission circuit. The high-frequency composite part further may comprise a filter formed of a transmission line and a capacitor comprising interconnected electrodes formed on respective layers within said multilayer board. The multilayer board may comprise low-temperature baked ceramic material.
    • 高频复合部件包括构成PHS便携式电话机的高频部件中的高频开关和发送电路侧的放大器。 在电话中,高频开关用于在发送电路Tx与天线的连接之间切换,以及接收电路Rx与天线的连接。 Tx侧的放大器放大已被转换成RF信号的要发送的信号,并通过Tx侧的滤波器,并将其发送到高频开关。 高频复合部件可以包括:通过层叠多个电介质层而形成的多层板; 由安装在所述多层板上的二极管和传输线构成的高频开关和包括形成在所述多层板内各层上的互连电极的电容器; 以及由安装在所述多层板上的晶体管和传输线构成的放大器和包括形成在所述多层板内各层上的互连电极的电容器。 在高频复合部分中,放大器可以包括在传输电路中。 高频复合部件还可以包括由传输线形成的滤波器和包括形成在所述多层板内的各个层上的互连电极的电容器。 多层板可以包括低温烘烤陶瓷材料。
    • 2. 发明授权
    • Wireless transmission device in which transmission output is controlled in feedback control
    • 在反馈控制中控制传输输出的无线传输装置
    • US07899420B2
    • 2011-03-01
    • US12014316
    • 2008-01-15
    • Shigeki NakamuraFumiya KamimuraJunji ItoHidefumi Suzaki
    • Shigeki NakamuraFumiya KamimuraJunji ItoHidefumi Suzaki
    • H04B1/04
    • H03F3/45085H03F3/24H03F2200/408H03F2200/451H03F2203/45612H04B2001/0416
    • A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.
    • 无线传输装置包括:RF功率放大部分,用于放大发射RF信号并将放大的信号输出到发射天线,检测器部分和控制部分。 RF功率放大部分包括多级放大,发射RF信号被输入到多级放大级中的第一级的输入,并输出多级放大的最后一级的输出 到发射天线。 检测器部分包括多个检测器,它们被设置为对应于多个放大级,每个检测器用于检测放大级中对应的一级的输入电平;以及合成器,用于将来自多个检测器的检测输出 。 控制部分在反馈控制中基于合成器的输出电平来控制RF功率放大部分的输出电平。
    • 5. 发明申请
    • WIRELESS TRANSMITTER
    • 无线发射机
    • US20090011727A1
    • 2009-01-08
    • US12014316
    • 2008-01-15
    • Shigeki NakamuraFumiya KamimuraJunji ItoHidefumi Suzaki
    • Shigeki NakamuraFumiya KamimuraJunji ItoHidefumi Suzaki
    • H04B1/04
    • H03F3/45085H03F3/24H03F2200/408H03F2200/451H03F2203/45612H04B2001/0416
    • A wireless transmission device includes a RF power amplification section for amplifying a transmit RF signal and outputting the amplified signal to a transmission antenna, a detector section, and a control section. The RF power amplification section includes a plurality of stages of amplification, the transmit RF signal is input to an input of a first one of the plurality of stages of amplification, and an output of a last one of the plurality of stages of amplification is output to the transmission antenna. The detector section includes a plurality of detectors provided so as to correspond to the plurality of stages of amplification, each for detecting an input level of a corresponding one of the stages of amplification, and a synthesizer for synthesizing together detection outputs from the plurality of detectors. The control section controls, in a feedback control, an output level of the RF power amplification section based on an output level of the synthesizer.
    • 无线传输装置包括:RF功率放大部分,用于放大发射RF信号并将放大的信号输出到发射天线,检测器部分和控制部分。 RF功率放大部分包括多级放大,发射RF信号被输入到多级放大级中的第一级的输入,并输出多级放大的最后一级的输出 到发射天线。 检测器部分包括多个检测器,它们被设置为对应于多个放大级,每个检测器用于检测放大级中对应的一级的输入电平;以及合成器,用于将来自多个检测器的检测输出 。 控制部分在反馈控制中基于合成器的输出电平来控制RF功率放大部分的输出电平。
    • 6. 发明授权
    • Wireless frequency power amplifier, semiconductor device, and wireless frequency power amplification method
    • 无线频率功率放大器,半导体器件和无线频率功率放大法
    • US07683712B2
    • 2010-03-23
    • US12052857
    • 2008-03-21
    • Hidefumi SuzakiJunji ItoFumiya KamimuraShigeki Nakamura
    • Hidefumi SuzakiJunji ItoFumiya KamimuraShigeki Nakamura
    • H03G9/00
    • H03F3/19H03F1/30H03G3/3042
    • A differential amplifier circuit is connected to the input node and the output node of the final amplification stage through detection circuits. The signal level difference output from the differential amplifier circuit does not change even if the input power varies. Because a change in the power gain at the output node does not travel back to the input node when the load impedance of the wireless frequency power amplifier varies, it is possible to detect only the change in the load impedance. Damage to the final stage can be prevented by controlling the operating current of the final stage and the gain of the drive stage according to the detected load variation. Nonlinear distortion in the wireless frequency power amplifier output can also be reduced by detecting and canceling the change in the gain of the drive stage by changing the gain of the adjustment stage.
    • 差分放大器电路通过检测电路连接到最终放大级的输入节点和输出节点。 即使输入功率变化,差分放大电路输出的信号电平差也不变。 因为当无线频率功率放大器的负载阻抗变化时,输出节点处的功率增益的改变不会返回到输入节点,所以可以仅检测负载阻抗的变化。 可以通过根据检测到的负载变化来控制最后级的工作电流和驱动级的增益来防止对最后级的损坏。 通过改变调节级的增益,可以通过检测和消除驱动级增益的变化来减小无线频率功率放大器输出中的非线性失真。