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1. 发明授权

US4389624A Dielectric-loaded coaxial resonator with a metal plate for wide frequency adjustments 失效
标题翻译：具有金属板的介电负载同轴谐振器用于宽频率调节
公开(公告)号：US4389624A
公开(公告)日：1983-06-21
申请号：US251967
申请日：1981-04-03
申请人： Yukichi Aihara , Sadahiko Yamashita
发明人： Yukichi Aihara , Sadahiko Yamashita
IPC分类号： H01P1/202 , H01P7/04
CPC分类号： H01P7/04
摘要： A coaxial resonator comprising an outer conductor with closed and open ends, an inner conductor concentrically disposed in the outer conductor to establish a short circuit at the closed end and an open circuit at the open end, and a dielectric member mounted in the open circuit between the outer and inner conductors. An electrode is connected to the open circuit end of the inner conductor with a spacing from the dielectric member. A conductive plate, having a smaller surface area than that of the electrode but larger than the transverse cross-sectional area of the inner conductor, is provided between the dielectric member and the electrode. The dimensions of the conductive plate is appropriately chosen to accommodate frequency variations which might occur as a result of a connection with an external circuit.
摘要翻译：一种同轴谐振器，包括具有闭合和开放端的外部导体，同心地设置在外部导体中的内部导体，以在封闭端处建立短路，并在开口端形成开路;以及电介质构件，其安装在开路之间外导体和内导体。电极与内部导体的开路端连接，与电介质构件间隔开。在电介质构件和电极之间设置导电板，其表面面积小于电极的表面积，但大于内导体的横截面积。适当地选择导电板的尺寸以适应由于与外部电路的连接而可能发生的频率变化。

2. 发明授权

US06175746B1 Multiband mobile unit communication apparatus 失效
标题翻译：多频带移动单元通信装置
公开(公告)号：US06175746B1
公开(公告)日：2001-01-16
申请号：US08828305
申请日：1997-03-28
申请人： Keiichi Nakayama , Seiichi Yamaguchi , Fujio Sasaki , Yukichi Aihara , Hiroaki Kosugi
发明人： Keiichi Nakayama , Seiichi Yamaguchi , Fujio Sasaki , Yukichi Aihara , Hiroaki Kosugi
IPC分类号： H04B138
CPC分类号： H04B1/006 , H03D7/163 , H03D7/165 , H04B1/005 , H04B1/26 , H04B1/406
摘要： A multiband mobile unit communication apparatus is disclosed which comprises: an antenna for receiving L FRQ bands of M radio wave SIGs modulated by N modulating methods, M>L, M>N, N≧L; a frequency synthesizer for generating a LO SIG; an IF SIG generation CKT for generating M IF SIGs using the LO SIG, the FRQ synthesizer generating the LO SIG such that the M IF SIGs have the same intermediate FRQ; a SW CKT for selectively outputting N IF SIGs modulated by the N modulating methods respectively out of the M IF SIGs; N filters for filtering outputs of N IF SIGs from the SW CKT and outputting N filtered IF SIGs respectively; a SW responsive to a SW CONT signal for selectively outputting one of the N filtered IF SIGs; and a quadrature demodulator for quadrature-demodulating one of N filtered IF SIGs and outputting baseband SIG. Different frequency bands of received signals are converted into IF SIGs having the same intermediate frequency. Moreover, different frequency bands of received signals which are modulated by the same method are filtered by the same IF filter.
摘要翻译：公开了一种多频带移动单元通信装置，包括：用于接收由N个调制方法调制的M个无线电波SIG的L个FRQ频带的天线，M> L，M> N，N> = L; 用于产生LO SIG的频率合成器; 用于使用LO SIG产生M IF SIG的IF SIG生成CKT，FRQ合成器生成LO SIG，使得M IF SIG具有相同的中间FRQ; SW CKT，用于选择性地输出由N个调制方法调制的N个IF SIG在M IF SIG中; N个滤波器，用于滤除来自SW CKT的N IF SIG的输出，并分别输出N个滤波的IF SIG; 响应于SW CONT信号的SW，用于选择性地输出N个滤波的IF SIG中的一个; 以及用于正交解调N个滤波的IF SIG之一并输出基带SIG的正交解调器。接收信号的不同频带被转换成具有相同中频的IF SIG。此外，通过相同的方法调制的接收信号的不同频带被相同的IF滤波器滤波。

3. 发明授权

US5214393A Transmission output control circuit 失效
标题翻译：传输输出控制电路
公开(公告)号：US5214393A
公开(公告)日：1993-05-25
申请号：US740966
申请日：1991-08-06
申请人： Yukichi Aihara
发明人： Yukichi Aihara
IPC分类号： H03G3/20
CPC分类号： H03G3/3047
摘要： In a radio transmitter, a part of an output of a transmission output amplifying circuit is supplied to a variable attenuating circuit and an output of the variable attenuating circuit is supplied to a detecting circuit. An output of the detecting circuit and a reference voltage are compared and a control voltage is given to the transmission power amplifying circuit in accordance with the result of the comparison, thereby controlling the transmission output. By controlling the attenuation amount of the variable attenuating circuit, the transmission output can be controlled over a wide dynamic range with a high reproducing fidelity.

4. 发明授权

US4506241A Coaxial dielectric resonator having different impedance portions and method of manufacturing the same 失效
标题翻译：具有不同阻抗部分的同轴介质谐振器及其制造方法
公开(公告)号：US4506241A
公开(公告)日：1985-03-19
申请号：US445837
申请日：1982-11-30
申请人： Mitsuo Makimoto , Yukichi Aihara , Sadahiko Yamashita
发明人： Mitsuo Makimoto , Yukichi Aihara , Sadahiko Yamashita
IPC分类号： H01P1/202 , H01P1/212 , H01P7/04 , H01P7/10
CPC分类号： H01P1/202 , H01P7/04 , Y10T29/49016
摘要： A coaxial dielectric resonator for VHF-UHF band comprises a generally cylindrical dielectric body having a thick portion, a thin portion and a stepped portion interposed between the thick and thin portion. The outer and inner surfaces of the dielectric body are respectively covered by outer and inner conductors. Thus the resonator can be regarded as a series circuit of two lines having different impedance from each other. The axial length of the thick and thin portions may be changed so as to change electrical characteristics. With the provision of thick and thin dielectric portions, the spurious resonance frequencies may be set to values other than integral multiples of the fundamental resonance frequency. The stepped portion may be rounded or replaced with a tapered portion so that impedance gradually changes at the stepped or tapered portion from the thick portion to the thin portion or vice versa.
摘要翻译：用于VHF-UHF带的同轴电介质谐振器包括具有厚部分，薄部分和介于厚部分和薄部分之间的阶梯部分的大致圆柱形电介质体。绝缘体的外表面和内表面分别由外导体和内导体覆盖。因此，谐振器可以被认为是具有彼此具有不同阻抗的两条线路的串联电路。可以改变厚薄部分的轴向长度以改变电特性。通过提供厚而薄的电介质部分，寄生谐振频率可以被设置为不同于基本共振频率的整数倍的值。台阶部分可以是圆形的或被锥形部分替代，使得阻挡物从阶梯形或锥形部分从厚部分逐渐变化到薄部分，反之亦然。

5. 发明授权

US06236840B1 Transmission output detecting circuit 失效
标题翻译：具有发送输出检测电路的无线收发器，用于在发送期间检测来自漏电功率OD A TDD开关的发送输出功率
公开(公告)号：US06236840B1
公开(公告)日：2001-05-22
申请号：US08988025
申请日：1997-12-10
申请人： Yukichi Aihara , Fujio Sasaki
发明人： Yukichi Aihara , Fujio Sasaki
IPC分类号： H04B144
CPC分类号： H04B17/18 , H04B17/102
摘要： A transmission output detecting circuit for use in a radio transmitter-receiver of a TDD communication system having a TDD switch for connecting a transmission system to an antenna system in a transmitting period and for connecting a reception system to the antenna system in a receiving period; comprising a detection means for detecting transmission output on the basis of leakage power of the TDD switch in the transmitting period. The transmission output can be detected with low power consumption without making the transmission power branch out.
摘要翻译：一种发送输出检测电路，用于TDD通信系统的无线电发射机 - 接收机，该TDD通信系统具有用于在发送周期内将传输系统连接到天线系统并在接收时段中将接收系统连接到天线系统的TDD切换器; 包括检测装置，用于在发送周期中基于TDD开关的泄漏功率来检测发送输出。可以在低功耗的情况下检测发送输出，而不会使发送功率分支。

6. 发明授权

US5532646A High frequency power amplifier 失效
标题翻译：高频功率放大器
公开(公告)号：US5532646A
公开(公告)日：1996-07-02
申请号：US339698
申请日：1994-11-14
申请人： Yukichi Aihara
发明人： Yukichi Aihara
IPC分类号： H03F1/02 , H03F1/32 , H03F3/60 , H03G3/30
CPC分类号： H03F1/0266 , H03G3/3042 , H03F2200/201 , H03F2200/411
摘要： In a high frequency power amplifier reduction of current consumption at the time of power down and an improvement in distortion of linearly modulated wave at the time of generation of its maximum output are automatically effected at the same time. Part of the high frequency output of a pre-stage amplifier is derived by a directional coupler inserted in the input part of a post-stage amplifier to be superposed through a DC voltage generator circuit on a gate bias voltage applied to the gate terminal of an FET in the post-stage amplifier, so that the gate bias voltage can be automatically controlled to its optimum value according to the output level required for the power amplifier.
摘要翻译：在高功率功率放大器中，在掉电时减少电流消耗和在产生其最大输出时线性调制波的失真的改善同时被自动实现。前级放大器的高频输出的一部分是通过插入在后级放大器的输入部分中的定向耦合器导出的，以通过直流电压发生器电路叠加施加到栅极端子的栅极偏置电压后置放大器中的FET，使得栅极偏置电压可以根据功率放大器所需的输出电平自动控制到其最佳值。

7. 发明授权

US5376895A Control circuit and method for transmission output 失效
标题翻译：控制电路及其传输方式
公开(公告)号：US5376895A
公开(公告)日：1994-12-27
申请号：US977156
申请日：1992-11-16
申请人： Yukichi Aihara
发明人： Yukichi Aihara
IPC分类号： H04B1/04 , H03G3/20
CPC分类号： H03G3/3047
摘要： A control circuit for a transmission output is used in a TDMA system radio transmitter or the like and can control a transmission output burst wave stably with high accuracy over a wide range. There is provided a closed loop system in which part of the transmission output is taken out and detected to be compared with a reference voltage to control a power amplifier and an open loop system for controlling a drive amplifier connected to an input of the power amplifier, so that a wide range operation of the transmission output and multi-stage control are attained by combining controls of both the loops.
摘要翻译：在TDMA系统无线电发射机等中使用用于发送输出的控制电路，并且能够在宽范围内以高精度稳定地控制发送输出脉冲串波。提供了一种闭环系统，其中取出和检测部分传输输出以与参考电压进行比较，以控制功率放大器和用于控制连接到功率放大器的输入的驱动放大器的开环系统，使得通过组合两个环路的控制来实现传输输出和多级控制的宽范围操作。

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