CHARACTERISTICS ADJUSTING METHOD FOR CIRCULARLY POLARIZED WAVE ANTENNA

摘要

PROBLEM TO BE SOLVED: To make it easy to finely adjust characteristics of a circularly polarized wave antenna and to suppress variations in the characteristics. SOLUTION: When the characteristics of the circularly polarized wave antenna 1 are adjusted, a radiation element 3 is trimmed and a ground pattern 4 is trimmed. A fine error which can not be adjusted only by the trimming of the radiation element 3 can be eliminated by trimming the ground pattern and variations in the characteristics can be suppressed.