| 摘要 |
PURPOSE:To obtain an antenna favorable in the case where the posture of an antenna installed side varies, or the position of //a remote side station varies by giving it a wide angle radiation directivity characteristic. CONSTITUTION:On the assumption that the thickness of a dielectric plate 2 is (h), and the guide wave length (wave length on antenna) of using frequency is lambdag, the divinations of various parts, i.e., the length La of respective sides A''B'' and C''D'', the length Lb of the sides A'B' and C'D', and the length Lc of the sides AB and CD, and the length Ld of the sides AaAb, AcAd, CcCd and CaCb, and a space between the sides B''C'' and B'C', and the space between the sides D''A'' and D'A', and the depth Lg of a recessed part 22, the depth Lh of the recessed part 24, and the length Wa of the sides B''C'' and D''A'', the length Wb of the sides B'C' and D'A', the length Wc of the sides BC and DA, the length Wd of the sides BbBc, BdBa, DdDa and DbDc, the space We between the sides A'' B'' and A'B', the space Wf between the sides C''D'' and C'D', the length Wg of the recessed part 21, and the depth Wh of the recessed part 23 are given by expressions A. Thus, the antenna of the wide angle radiation directivity can be obtained. |
