Patent ID: 8976068
Filing Date: 2015-03-10
Classification: H01Q

Abstract:
1. An antenna apparatus comprising: a first antenna element; a second antenna element; and a feeder circuit board comprising a first feeder circuit that feeds to the first antenna element, and a second feeder circuit that feeds to the second antenna element, wherein the feeder circuit board is a multi-layer board including first and second grounding conductors, wherein a grounding terminal of the first feeder circuit is connected to the first grounding conductor to be grounded, so that a ground current flows through the first grounding conductor when a radio wave is transmitted or received with the first antenna element, wherein a grounding terminal of the second feeder circuit is connected to the second grounding conductor to be grounded, so that a ground current flows through the second grounding conductor when a radio wave is transmitted or received with the second antenna element, and wherein the first and second grounding conductors are not electrically connected to each other.