| 摘要 |
A variable slot antenna includes: ground conductors 101 a and 101 b, which are divided by a slot region 109 both of whose both ends are open ends 111 a and 111 b; a feed line 115 for feeding power to the slot region 109 ; a first selective conduction path 119 connecting between the ground conductors 101 a and 101 b in a direction of the open end 111 a as viewed from a feeding site 113 ; and a second selective conduction path 121 connecting between the ground conductors 101 a and 101 b in a direction of the open end 111 b as viewed from the feeding site 113 . In a first driving state, the first selective conduction path 119 is allowed to conduct and the second selective conduction path 121 is left open, so that a main beam is emitted in a direction 123 a of the second selective conduction path 121 as viewed from the feeding site 113 . In another driving state, the selective conduction paths are controlled differently so that the main beam direction is switched to a direction 123 b.
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