| 摘要 |
PROBLEM TO BE SOLVED: To provide an antenna device having a small antenna which can obtain lower minimum frequency, as compared with prior art, whose design flexibility is high, and which has a high gain and a wide bandwidth. SOLUTION: Radiant conductors 14a and 14b provided to an antenna body 10 have half-round first form elements 11a and 11b, and second form elements 12a and 12b which thrust out along X direction from the first form elements 11a and 11b. A connection conductor 15, connected to end portions of the second form elements 12a and 12b, has a first line part 15a placed along the X direction so as to be in parallel with the radiation conductor 14b, and a second line part 15b placed along the Y direction. COPYRIGHT: (C)2006,JPO&NCIPI
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