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1. 发明申请

WO9917395A3 QUADRIFILAR ANTENNA 审中-公开
标题翻译：四边形天线
公开(公告)号：WO9917395A3
公开(公告)日：1999-06-17
申请号：PCT/US9819993
申请日：1998-09-24
申请人： MAGELLAN CORP , BARTA GARY S , CASLOW SCOTT A
发明人： BARTA GARY S , CASLOW SCOTT A
IPC分类号： H01Q1/38 , H01Q11/08 , H01Q1/36
CPC分类号： H01Q11/08
摘要： A quadrifilar antenna for use in satellite communications comprises four conductive elements arranged to define two separate helical pairs, one slightly differing in electrical length than the other, defined by a cylinder of constant radius supported by itself or by a cylindrical non-conductive substrate. The two separate helical pairs are connected to each other in such a way as to constitute the impedance matching, electrical phasing, coupling and power distribution for the antenna. In place of a conventional balun, the antenna is fed at a tap point on one of the conductive elements determined by an impedance matching network which connects the antenna to a transmission line. The matching network can be built with distributed or lumped electrical elements and can be incorporated into the design of the antenna.
摘要翻译：用于卫星通信的四线天线包括四个导电元件，其被布置成限定两个单独的螺旋副，一个电气长度稍微不同于另一个，由自身支撑的圆柱或由圆柱形非导电衬底支撑的恒定半径的圆柱限定。两个分离的螺旋对以这样的方式相互连接，以构成天线的阻抗匹配，电相位，耦合和功率分配。取代传统的平衡 - 不平衡变换器，天线在由阻抗匹配网络确定的导电元件之一的分接点处馈送，阻抗匹配网络将天线连接到传输线。匹配网络可以用分布式或集中式电气元件构建，并且可以结合到天线的设计中。

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