| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve the receiving performance of a GPS loop antenna adhered to the windshield glass of a vehicle for receiving circularly polarized waves. <P>SOLUTION: A loop antenna 13 includes a loop-shaped antenna conductor 15 for receiving the circularly polarized waves, feeder terminals 17, 18 connected with the two ends of the antenna conductor 15, and a non-feeder element 16 arranged near the antenna conductor 15 and made of a conductor independent from the antenna conductor 15, the antenna conductor, the feeder terminals and the non-feeder element being arranged over a sheet-shaped transparent film 14. An annular linear conductor 19 is arranged around the loop antenna 13 over the film 14. The whole length of the linear conductor 19 may be about three times as large as that of the antenna conductor 15. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
