| 摘要 |
PROBLEM TO BE SOLVED: To obtain a polarization sharing antenna which can make beam widths of vertical polarization and horizontal polarization almost equal in a horizontal plane, is easily designed and has small interconnection between a dipole for horizontal polarization and dipoles for vertical polarization. SOLUTION: A first dipole for vertical polarization and a second dipole for vertical polarization are arranged in almost parallel and in the same direction, the dipole for vertical polarization is arranged perpendicularly to the first dipole for vertical polarization and the second dipole for vertical polarization and is shifted so as not to overlap on the first and second dipoles for vertical polarization symmetrically with respect to them, and the lengths of a first feeding line and a second feeding line connected to feeding part of the first dipole for vertical polarization and a feeding part of the second dipole for vertical polarization, respectively are made to be electric length of odd number times as long as 1/4 wavelength in an almost central frequency of an operation frequency band. COPYRIGHT: (C)2009,JPO&INPIT
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