| 摘要 |
PROBLEM TO BE SOLVED: To provide a sector antenna assembly capable of discovering the optimal sector in comparatively short time and its feed circuit. SOLUTION: The sector antenna is constituted by arranging a reflector plate (3) which forms a plurality of separation spaces on a plate substrate (2) and providing radiation antennas (1-1, 1-2, etc.) to the respective separation spaces. An antenna feeding circuit which feeds power to these antenna radiation elements has a function as a divider which branches high frequency energy from a feeding end by on/off of on/off switches (6-1, 6-2) for high frequency arranged at positions of integer multiples of electric length of quarter wavelength of use frequency from two branching points (5) of two branching high frequency lines in two high frequency lines (5-2, 5-3) to be branching output of two branching high frequency lines (11, 12) which performs two branching of a high frequency line (5-1) from the feeding end (10) or a stab which passes energy of the selected branching high frequency line. COPYRIGHT: (C)2005,JPO&NCIPI
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