Patent ID: 7633455
Filing Date: 2009-12-15
Classification: H01Q

Abstract:
1. A plane antenna comprising: a substrate having a first surface and a second surface; a first radiating element, a first power feeding pattern connected to the first radiating element, and a first non-power feeding closed loop type radiating element provided adjacent to the first radiating element, all disposed on the first surface of the substrate; and a second radiating element, a second power feeding pattern connected to the second radiating element, and a second non-power feeding closed loop type radiating element provided adjacent to the second radiating element, all disposed on the second surface of the substrate; wherein each of the first and second non-power feeding closed loop type radiating elements are rectangular shape and each has two short sides and two long sides, wherein each long side is longer than each short side; wherein the first non-power feeding closed loop type radiating element is provided adjacent to the first radiating element at one of the short sides of the first non-power feeding closed loop type radiating element and located at one of the long sides in a right-angle direction to the first radiating element; and wherein the second non-power feeding closed loop type radiating element is provided adjacent to the second radiating element at one of the short sides of the second non-power feeding closed loop type radiating element and located at one of the long sides in a right angle direction to the second radiating element.