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    • 83. 发明授权
    • Mobile antenna system
    • 移动天线系统
    • US5166693A
    • 1992-11-24
    • US629653
    • 1990-12-07
    • Kunitoshi NishikawaKazuo SatoTomoaki HirakoMitoshi Fujimoto
    • Kunitoshi NishikawaKazuo SatoTomoaki HirakoMitoshi Fujimoto
    • H01Q1/32H01Q3/26H01Q21/06
    • H01Q3/2605H01Q1/3233H01Q21/065
    • In mobile communications, it is required that the beam direction is maintained to track the desired direction as the mobile is moving. For such a purpose, the mobile includes an angular rate sensor mounted therein which detects the state of turn in the mobile and to control the beam direction of the antenna in accordance with the state of turn as well as the strength of radiowave received by a receiver in the mobile. Antenna elements are in the form of microstrip antenna and are arranged in plane on the same dielectric substrate. Feeding and drive circuit layers for controlling the transmission and reception at the antenna elements are stacked into a single layered unit. This enables the antenna system to be formed into a low-profile structure. The dielectric substrate of the microstrip antenna element is formed by stacking a plurality of dielectric substrate different in dielectric constant from one another. It is thus intended that the band width of the antenna is increased and that the mutual coupling between the antenna elements is reduced to prevent the gain of the antenna from being lowered. Furthermore, the position of feed points in the antenna element are rotated against each adjacent antenna element. This can improve the axial ratio in the array antenna over a wide band width.
    • 在移动通信中,要求在移动台移动时保持波束方向跟踪所需的方向。 为了这样的目的,移动装置包括安装在其中的角速率传感器,其检测移动台中的转弯状态并且根据转向状态以及由接收器接收到的无线电波的强度来控制天线的波束方向 在手机。 天线元件是微带天线的形式,并且布置在同一电介质基片上的平面上。 用于控制天线元件的发送和接收的馈电和驱动电路层被堆叠成单层单元。 这使得天线系统能够形成为薄型结构。 微带天线元件的电介质基板是通过将不同介电常数彼此不同的多个电介质基板堆叠而形成的。 因此,希望增加天线的带宽,并且降低天线元件之间的相互耦合以防止天线的增益降低。 此外,天线元件中馈电点的位置相对于每个相邻的天线元件旋转。 这可以提高阵列天线在宽带宽上的轴比。
    • 89. 发明授权
    • Compressed air supplying device
    • 压缩空气供给装置
    • US4685941A
    • 1987-08-11
    • US799738
    • 1985-11-19
    • Kazuo Sato
    • Kazuo Sato
    • F04B39/16B01D53/26F04B41/02
    • B01D53/261
    • A compressed air supplying device has an air compressor, a dryer connected to an outlet of the air compressor, an air reservoir connected to an outlet of the dryer and connectable to pneumatic equipment, a valve for selectively placing piping between the air compressor and the dryer in communication with the atmosphere, and a control device for controlling the operation of the air compressor and the valve and for detecting the pressure in the air reservoir and detecting the accumulated operational time and/or the number of operations of the air compressor such that when the accumulated operated time and/or the number of operations of the air compressor exceeds a predetermined amount the valve is opened in order to regenerate by causing the compressed air in the reservoir to flow toward the atmosphere through the dryer.
    • 压缩空气供给装置具有空气压缩机,连接到空气压缩机的出口的干燥器,连接到干燥器的出口并可连接到气动设备的空气存储器,用于选择性地在空气压缩机和干燥器之间放置管道的阀 与气氛通信的控制装置,以及用于控制空气压缩机和阀的操作并且用于检测储气罐中的压力并且检测空气压缩机的累积操作时间和/或操作次数的控制装置, 空气压缩机的累积操作时间和/或操作次数超过预定量的阀打开,以便通过使储存器中的压缩空气通过干燥器流向大气而再生。