专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

91. 发明授权

US5559524A Antenna system including a plurality of meander conductors for a portable radio apparatus 失效
标题翻译：天线系统，包括用于便携式无线电设备的多个曲折导体
公开(公告)号：US5559524A
公开(公告)日：1996-09-24
申请号：US207428
申请日：1994-03-08
申请人： Ken Takei , Masami Ohnishi , Mikio Kuwahara
发明人： Ken Takei , Masami Ohnishi , Mikio Kuwahara
IPC分类号： H01Q1/24 , H01Q1/36 , H01Q1/08
CPC分类号： H01Q1/362 , H01Q1/242
摘要： An antenna of small size is provided which can be mass-produced, which is suitable for use with a portable receiver and which does not require provision of a separate matching circuit. The antenna includes a plurality of meander antennas printed on at least one dielectric film and satisfying respectively different resonance conditions in a frequency band used by the receiver, at least one dielectric solid cylinder for winding the dielectric film therearound, and a dielectric hollow cylinder for covering the dielectric film wound around the dielectric solid cylinder. The individual meander antennas printed on the dielectric film do not make direct electrical contact with each other, and one of the meander antennas connected to a feeder or a helical antenna surrounding the dielectric solid cylinder acts to produce multiple resonance by means of electromagnetic coupling with the other meander antennas, thereby widening the frequency band. The dielectric solid cylinder around which the dielectric film is wound or to which the dielectric film is bonded may be replaced by a dielectric polygonal prism such as a dielectric square prism. In the antenna, impedance matching with the radio frequency part of the receiver can be satisfactorily achieved, so that an antenna of low cost suitable for portable receivers can be offered.
摘要翻译：提供小尺寸的天线，其可以批量生产，其适合于与便携式接收器一起使用，并且不需要提供单独的匹配电路。该天线包括印刷在至少一个电介质膜上的多个曲折天线，并且在接收器使用的频带中分别满足不同的共振条件，至少一个用于在其周围缠绕电介质膜的电介质实心圆柱体，以及用于覆盖电介质膜缠绕在电介质实心圆筒上。打印在电介质膜上的各个曲折天线不会彼此直接电接触，并且连接到馈电器或围绕电介质实心圆柱体的螺旋天线之一的曲折天线之一用于通过电磁耦合产生多个谐振其他弯曲天线，从而扩大了频带。电介质膜被缠绕在其周围或电介质膜被接合的电介质实心圆柱体可以由电介质多边形棱柱如电介质正方形棱镜代替。在天线中，可以令人满意地实现与接收机的射频部分的阻抗匹配，从而可以提供适合于便携式接收机的低成本的天线。

IPRDB

热门服务

关于我们

友情链接

联系方式