| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain a high reception gain and a non-directional property for an FM broadcast wave by separately providing an AM broadcast wave antenna and an FM broadcast wave antenna in a marginal portion of a defogger hot wire. <P>SOLUTION: An AM broadcast wave antenna defines, as an AM feed point, a position where at least two vertical wires are made separately orthogonal to a plurality of horizontal wires, spaced at intervals, and provided through a drawing line from the upper-most horizontal wire. FM broadcast wave antennas are extended opposite to each other in clockwise and counter-clockwise directions along a portion of the outer-most circumferential part of the AM broadcast wave antenna from two FM feed points provided at both right and left sides of the AM feed point. The AM broadcast antenna is held and surrounded between a pair of right and left FM broadcast wave antennas. Terminal portions of all one-edge sides of the plurality of horizontal wires in the AM broadcast wave antenna are surrounded with one FM broadcast wave antenna, and terminal portions of other-edge sides of the plurality of horizontal wires are just partially surrounded with the other FM broadcast wave antenna. The horizontal wires of the AM broadcast wave antenna and the horizontal wires of the FM broadcast wave antennas are close to each other and capacitively coupled. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
