Patent ID: 8912960

Claim:
An antenna apparatus comprising: a first dielectric layer having a rectangular shape in plan view; a ground plane configured to be disposed on a first surface of the first dielectric layer; a conductive line configured to have a first end and a second end and to be disposed on a second surface of the first dielectric layer, the first end being a feeding point, the second end being an open end or a short end connected to the ground plane; a second dielectric layer configured to have a shape corresponding to the first dielectric layer and to be disposed on the second surface of the first dielectric layer in a state where the conductive line is sandwiched between the first dielectric layer and the second dielectric layer, the second dielectric layer having a first surface facing toward the first dielectric layer and a second surface opposite to the first surface; a first conductive element configured to be disposed on the second surface of the second dielectric layer so that the first conductive element intersects the conductive line at a first position corresponding to a first node of a standing wave of current flowing through the conductive line in plan view, respectively; and a second conductive element configured to be disposed on the second surface of the second dielectric layer so that the second conductive element intersects the conductive line at a second position corresponding to a second node of the standing wave in plan view, respectively, wherein the first conductive element and the second conductive element are bent or rounded toward the feeding point with respect to the first position and the second position corresponding to the first node and the second node in plan view, respectively, and wherein a first bent degree, a first rounded degree or a first length of the first conductive element is different from a second bent degree, a second rounded degree or a second length of the second conductive element.