公开(公告)号：US06154177A

公开(公告)日：2000-11-28

申请号：US146895

申请日：1998-09-03

申请人： Yutaka Saito ,  Nozomi Kou ,  Hideo Nakanishi

发明人： Yutaka Saito ,  Nozomi Kou ,  Hideo Nakanishi

IPC分类号： H01Q3/24 ,  H01Q1/24 ,  H01Q1/36 ,  H01Q1/38 ,  H01Q1/40 ,  H01Q7/00 ,  H04B7/08 ,  H04B7/10 ,  H04B7/26

CPC分类号： H04B7/0811 ,  H01Q1/243 ,  H01Q7/00 ,  H04B7/10

摘要： In antenna device which is to be used in a portable radio receiver, plural loop antennas 1 and 3 which are formed along different faces of a case 9 of the radio receiver, respectively, and switching means 5 for selecting one of received signals from the plural loop antennas are disposed. Reception is performed while selecting a loop antenna having a higher received signal level. When an antenna having the directivity or the plane of polarization which are more advantageous is selected, it is possible to ensure high reception performance.

摘要翻译： 在便携式无线电接收机中使用的天线装置中，分别沿着无线电接收机的壳体9的不同面形成的多个环形天线1和3以及用于从多个接收机中选择接收信号之一的切换装置5 环形天线被布置。 在选择具有较高接收信号电平的环形天线的同时执行接收。 当选择具有更有利的方向性或极化平面的天线时，可以确保高的接收性能。