Patent ID: 9070967
Filing Date: 2015-06-30
Classification: H01Q

Abstract:
1. An antenna comprising: a dielectric substrate; a plurality of antenna elements provided on the dielectric substrate and having magnetic current as a main radiating source, the plurality of antenna elements arranged such that an Eθ component as main polarized waves is placed in a horizontal direction; and rims made of metal plates or EBGs (Electromagnetic band Gap) with a predetermined periodic structure provided at respective sides on the dielectric substrate in such a manner as to sandwich the at least one antenna element in the horizontal direction, wherein the plurality of at least one antenna elements comprise two or more groups of antenna elements arranged in a vertical direction, each of the groups of the antenna elements having two antenna elements arranged in a horizontal direction, and each of the antenna elements being formed as a ¼ wavelength rectangular patch, and when a distance between the rims or EBGs arranged at the respective sides of the two or more groups of the antenna elements is Asub, free space wavelength of radiation wave of the antenna elements is λ0, a relative effective permittivity of the dielectric substrate is ∈eff, and a length a of each of the antenna elements in the horizontal direction meets the Asub is determined to meet