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公开(公告)号：US5801660A
公开(公告)日：1998-09-01
申请号：US595034
申请日：1996-01-31
CPC分类号： H01Q9/0471 , H01Q9/0414 , H01Q9/0421 , H01Q9/0457
摘要： A planar antenna apparatus adapted to excite a small radiating element by electromagnetic coupling is provided. The antenna apparatus has a triplate line including ground conductor plates formed on the upper and lower surfaces of a dielectric substrate and a feed line sandwiched by the ground conductor plates. A coupling hole is formed through one of the ground conductor plates, and a mechanism is provided near the coupling hole for electrically interconnecting the two ground conductor plates. A radiating section coupled to the feed line through the coupling hole has one end grounded to form a short patch antenna. The short patch antenna has a size substantially half the size of a patch antenna. Also, the connecting mechanism prevents unnecessary coupling.
摘要翻译： 提供一种适于通过电磁耦合激励小辐射元件的平面天线装置。 天线装置具有三面板线，其包括形成在电介质基板的上表面和下表面上的接地导体板和由接地导体板夹持的馈电线。 通过一个接地导体板形成耦合孔，并且在耦合孔附近设置有用于将两个接地导体板电连接的机构。 通过耦合孔耦合到馈电线的辐射部分具有一端接地以形成短贴片天线。 短贴片天线的尺寸基本上是贴片天线尺寸的一半。 此外，连接机构防止不必要的联接。
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12.发明授权
公开(公告)号：US5798734A
公开(公告)日：1998-08-25
申请号：US708225
申请日：1996-09-06
CPC分类号： H01Q9/0407 , H01Q9/0414
摘要： An antenna apparatus, a method of manufacturing the same, and a method of designing the same, are provided. A first dielectric layer, first dielectric film, second dielectric layer and second dielectric film are laminated on a flat metal plate in the mentioned order. A radiation element fed through a feeding line is arranged below another radiation element that is not fed through the feeding line. The feeding line forms, along its overall length, a microstrip line having the dielectric layer sandwiched by the feeding line and the flat conductive plate, resulting in no model change from the microstrip line to a triplate line or vice versa, with reduced feeding loss. The thickness of the dielectric layer is so set as to be sufficiently small compared with the used wavelength, to thereby suppress the radiation from discontinuities lying on the microstrip line constituted of the feeding line and flat conductive plate. This eliminates the need for a metal shield plate to prevent unnecessary radiation from the feeding line.
摘要翻译： 提供了一种天线装置及其制造方法及其设计方法。 第一电介质层，第一电介质膜，第二电介质层和第二电介质膜按照上述顺序层叠在平坦的金属板上。 通过馈电线馈送的辐射元件布置在不通过馈电线馈送的另一辐射元件下方。 馈电线沿着其整个长度形成具有被馈电线和平板导电板夹持的电介质层的微带线，导致没有模型从微带线变为三板线，反之亦然，具有减少的馈电损耗。 电介质层的厚度与使用波长相比设定得足够小，从而抑制位于由馈电线和平板导电板构成的微带线上的不连续的辐射。 这消除了对金属屏蔽板的需要，以防止来自馈线的不必要的辐射。
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公开(公告)号：US5101172A
公开(公告)日：1992-03-31
申请号：US630474
申请日：1990-12-19
申请人： Yukio Ikeda , Gen Toyoshima , Noriharu Suematsu , Yoji Isota , Tadashi Takagi , Shuji Urasaki
发明人： Yukio Ikeda , Gen Toyoshima , Noriharu Suematsu , Yoji Isota , Tadashi Takagi , Shuji Urasaki
CPC分类号： H03F1/3247 , H03F1/0238 , H03F1/3282 , H03F2200/102 , H03F2200/438
摘要： A linear amplifier includes a variable attenuator and a phase shifter for modifying the amplitude and phase of an input signal to compensate for amplitude and phase distortion caused by non-linear characteristics of a high-powered amplifier utilized in a microwave band communications system. An amplitude comparator and a phase comparator compare the amplitudes and phases of input and output signals of the linear amplifier circuit to develop control signals for controlling the operation of the variable attenuator and phase shifter. The elimination of digital signal processing circuitry allows increased speed of operation that is essential for use in the microwave bands.
摘要翻译： 线性放大器包括可变衰减器和移相器，用于修改输入信号的幅度和相位，以补偿由微波频带通信系统中使用的高功率放大器的非线性特性引起的幅度和相位失真。 振幅比较器和相位比较器比较线性放大器电路的输入和输出信号的幅度和相位，以产生用于控制可变衰减器和移相器的操作的控制信号。 数字信号处理电路的消除允许增加在微波带中使用所必需的操作速度。
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14.发明授权Modulation device with input signal modification for correction of amplifier nonlinearities 失效具有输入信号修正的调制器件，用于校正放大器非线性
公开(公告)号：US5093637A
公开(公告)日：1992-03-03
申请号：US631506
申请日：1990-12-21
申请人： Yoji Isota , Gen Toyoshima , Noriharu Suematsu , Yukio Ikeda , Tadashi Takagi , Shuji Urasaki
发明人： Yoji Isota , Gen Toyoshima , Noriharu Suematsu , Yukio Ikeda , Tadashi Takagi , Shuji Urasaki
CPC分类号： H03F1/3247 , H03C3/08 , H03F1/3288 , H04L27/2071 , H03C3/02 , H03F2200/102 , H03F2201/3227 , H03F2201/3233
摘要： In a modulation system using an amplitude and a phase of a carrier wave as information such as a QPSK system, a modulation device modifies an input signal series to compensate the nonlinear characteristics of an amplifier located at a later stage, and provides a carrier wave modulated by the modified signal series to the amplifier. A first arithmetic circuit obtains an amplitude and a phase of an input signal by calculation. A ROM is set with correction data corresponding to the calculated amplitude so as to compensate the nonlinearity of the amplifier. A modification value generating circuit and a RAM output an amount of compensation so as to further modify the correction data according to part of an output signal from the amplifier to compensate amplifier characteristic changes due to temperature variations and the like. A second arithmetic circuit provides a signal series produced from the modified amplitude and phase to a quadrature modulator.
摘要翻译： 在使用载波的振幅和相位作为诸如QPSK系统的信息的调制系统中，调制装置修改输入信号序列以补偿位于后期的放大器的非线性特性，并提供载波调制 通过改进的信号系列到放大器。 第一算术电路通过计算获得输入信号的振幅和相位。 ROM设置有与所计算的幅度对应的校正数据，以补偿放大器的非线性。 修改值产生电路和RAM输出补偿量，以便根据来自放大器的输出信号的一部分进一步修改校正数据，以补偿由于温度变化等引起的放大器特性变化。 第二运算电路提供从修正的幅度和相位产生的信号到正交调制器。
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公开(公告)号：US4607240A
公开(公告)日：1986-08-19
申请号：US684037
申请日：1984-12-20
申请人： Yoji Isota , Osami Ishida , Fumio Takeda
发明人： Yoji Isota , Osami Ishida , Fumio Takeda
IPC分类号： H01P5/18
CPC分类号： H01P5/185
摘要： A directional coupler having a main line and an auxiliary line each formed within a groove formed in a dielectric plate, having good directivity and capable of tight coupling.
摘要翻译： 具有主线和辅助线的定向耦合器各自形成在形成在电介质板中的沟槽内，具有良好的方向性并且能够紧密耦合。
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