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公开(公告)号：US5457470A
公开(公告)日：1995-10-10
申请号：US99624
申请日：1993-07-30
申请人： Xu Hai , Yoshimi Egashira
发明人： Xu Hai , Yoshimi Egashira
CPC分类号： H01Q9/30 , H01Q1/3233
摘要： An M-type car antenna for traffic information communication systems including an antenna element having a length which is one-half of the wavelength of the radio way used in the information communication systems, and a connector which is connected via an electrostatic coupling to the center-of the antenna element, the impedance matching and feeding being carried out by the connector. In this antenna, the voltage polarity of the connector at the coupling point and that of the center of the antenna element are set to be opposite from each other, and the electric current in the antenna element and that in the connector are set to be in the same direction. Thus, the M-type antenna is compact and easy to manufacture with stable antenna characteristics.
摘要翻译： 一种用于交通信息通信系统的M型车载天线，包括长度为在信息通信系统中使用的无线电方式的波长的一半的天线元件，以及通过静电耦合连接到中心的连接器 - 天线元件的阻抗匹配和馈电由连接器进行。 在该天线中，耦合点处的连接器的电压极性和天线元件的中心的电压极性被设置为彼此相反，并且天线元件中的电流和连接器中的电流被设置为 方向相同 因此，M型天线结构紧凑，易于制造，天线性能稳定。
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公开(公告)号：US5481271A
公开(公告)日：1996-01-02
申请号：US218097
申请日：1994-03-25
申请人： Xu Hai , Yoshimi Egashira
发明人： Xu Hai , Yoshimi Egashira
摘要： A two-wave antenna for telephones used in vehicles which includes two radiating elements in which one end of each of the two radiating elements is respectively connected to one end of a single phase coil and the effective radiating lengths of the two radiating elements are respectively 1/2 .lambda..sub.1 to 5/8 .lambda..sub.1 and an electrical length of the phase coil is 3/2 .lambda..sub.1 to 5/4 .lambda..sub.1 so that currents of the same phase and two frequency bands are carried in the two radiating elements and wherein .lambda..sub.1 is the wavelength of the first band.
摘要翻译： 一种用于车辆的电波用双波天线，包括两个辐射元件，两个辐射元件中的每一个的一端分别连接到单相线圈的一端，两个辐射元件的有效辐射长度分别为1 /2λ1至5/8λ1，相位线圈的电长度为3/2λ1至5/4λ1，使得相同相位和两个频带的电流在两个辐射元件中承载，其中 λ1是第一频带的波长。
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