| 摘要 |
PURPOSE:To simultaneously attain miniaturization and band-widening of the whole antenna by arranging a feeding element and a no-feeding element having different resonance frequencies so as to be separated from each other, and forming zigzag these elements, respectively. CONSTITUTION:On one face of a printed board 1, a feeding element 2 and a non-feeding element 3 are formed so as to be separated from each other, each linear part 2a of the feeding element 2 is parallel to each other, and also, the respective center parts are positioned on the extension of a projecting piece 1a provided on the printed board 1 and arranged like in a line. Also, each linear part 2a is connected by a folding-back part 2b, and from the linear part 2a positioned on the lowest side, a connecting line part 2c extends to a through- hole 1b on the projecting piece 1a, and is grounded through a high frequency generating circuit F. The non-feeding element 3 is also formed zigzag by the linear part 3a and the folding-back part 3b, and in order to widen the frequency band, the overall length of the non-feeding element 3 is determined so that a resonance frequency of the non-feeding element 3 becomes a little different from a resonance frequency of the feeding element 2. |
