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63 条记录 (耗时 0.022 秒)

    Output-controlled power amplifier, radio communication terminal and radio communication base station
    61.
    发明授权
    Output-controlled power amplifier, radio communication terminal and radio communication base station 失效
    输出控制功率放大器，无线电通信终端和无线电通信基站

    公开(公告)号：US5854971A

    公开(公告)日：1998-12-29

    申请号：US622135

    申请日：1996-03-27

    申请人： Yoshinori Nagoya ,  Takashi Sakai ,  Yuji Ishida ,  Ken Takei

    发明人： Yoshinori Nagoya ,  Takashi Sakai ,  Yuji Ishida ,  Ken Takei

    IPC分类号： H03F1/30 ,  H03F3/24 ,  H03G3/20 ,  H03G3/30 ,  H04B1/04 ,  H01Q11/12

    CPC分类号： H03G3/3047

    摘要： In an output-controlled power amplifier of a closed loop type, an input signal is inputted to a main path in which the input signal is power-attenuated by a variable attenuator and power-amplified by a power amplifier. A power divider distributes the amplified input signal between the main path and a feedback path diverging from the main path so that the signal distributed to the main path is outputted from the main path to the exterior while the input signal is controlled on the basis of the signal distributed to the feedback path. The feedback path includes a hold circuit for extracting the signal distributed to the feedback path and holding the value of the power of the extracted signal when the power reaches a predetermined value. A control signal for attenuating the power of the input signal inputted to the main path is generated by the hold circuit and is applied through the feedback path to the variable attenuator on the main path to control the power of the input signal. A transfer function of the closed loop has a Gaussian characteristic.

    摘要翻译： 在闭环类型的输出控制功率放大器中，输入信号被输入到主路径，其中输入信号被可变衰减器功率衰减并被功率放大器功率放大。 功率分配器在主路径和从主路径发散的反馈路径之间分配放大的输入信号，使得分配到主路径的信号从主路径输出到外部，同时基于 信号分配到反馈路径。 反馈路径包括保持电路，用于在功率达到预定值时提取分配给反馈路径的信号并保持提取信号的功率值。 用于衰减输入到主路径的输入信号的功率的控制信号由保持电路产生，并通过反馈路径施加到主路径上的可变衰减器，以控制输入信号的功率。 闭环的传递函数具有高斯特性。

    Microwave power source apparatus for microwave oscillator comprising means for automatically adjusting progressive wave power and control method therefor
    62.
    发明授权
    Microwave power source apparatus for microwave oscillator comprising means for automatically adjusting progressive wave power and control method therefor 失效
    用于微波振荡器的微波电源装置包括用于自动调节逐行波功率的装置及其控制方法

    公开(公告)号：US5399977A

    公开(公告)日：1995-03-21

    申请号：US180691

    申请日：1994-01-13

    申请人： Yuji Yoshizako ,  Michio Taniguchi ,  Yuji Ishida

    发明人： Yuji Yoshizako ,  Michio Taniguchi ,  Yuji Ishida

    IPC分类号： H01P5/08 ,  H01P5/04

    CPC分类号： H01P5/04

    摘要： In a microwave power source apparatus for a microwave oscillator for generating a microwave, a DC power source supplies a DC power for generating the microwave to the microwave oscillator. A measuring section of a voltage standing wave detector is mounted on a microwave transmission line connected between the microwave oscillator and a microwave load, and measures either one of an impedance seen looking toward the microwave load at a mounted point thereof and a reflection coefficient thereat by detecting a voltage standing wave of the microwave being generated by the microwave oscillator and propagating on the microwave transmission line. A controller calculates a progressive wave power of the microwave propagating on the microwave transmission line from the microwave oscillator toward the microwave load based on either one of the impedance and the reflection coefficient measured by the measuring section, and controls the DC power source to adjust the progressive wave power of the microwave to a predetermined desirable adjustment value based on the calculated progressive wave power.

    摘要翻译： 在用于产生微波的微波振荡器的微波电源装置中，DC电源向微波振荡器提供用于产生微波的DC电力。 电压驻波检测器的测量部分安装在连接在微波振荡器和微波负载之间的微波传输线上，并且测量在其安装点看到微波负载的阻抗，其反射系数由 检测由微波振荡器产生的微波电压驻波，并在微波传输线上传播。 控制器基于由测量部测量的阻抗和反射系数中的任一个，计算从微波振荡器向微波负载传播的微波的逐行波功率，并且控制直流电源以调整 基于所计算的逐行波功率将微波的逐次波功率调整到预定的期望调节值。