| 摘要 |
PROBLEM TO BE SOLVED: To solve the following problem that, since a conventional vehicular antenna has a rectangular loop shape and its installation surface occupies a fixed large area, there is a possibility of impairing the frontward visual field of a driver. ! SOLUTION: A vehicular antenna 1 includes: an almost rhombic loop antenna; and a first passive element disposed separately below the loop antenna. The first passive element linearly extends almost horizontally, and the almost center thereof includes a first portion crossing a diagonal line of the loop antenna, and a second portion connected each of both end parts of the first portion while linearly extending upward from both the end parts. The vehicular antenna 1 secures a gain in a zenith direction by disposing the first passive element or the like in the vicinity of the loop antenna. Also, the antenna can be downsized because no rectangular DTD loop antenna is required. ! COPYRIGHT: (C)2015,JPO&INPIT |
