Patent attributes
Two antenna elements are planar and stored in a housing. An antenna element is arranged with the antenna faces of the antenna elements orthogonal to the plane of the substrate. The shape, interval, etc. of the antenna element depend on an available frequency. The length of an electric field vector generated between the substrate and the antenna element becomes longer as the antenna element is farther from the substrate. The frequency corresponding to the electric field vector changes corresponding to the radio signal frequency, that is, higher or lower. That is, in the above-mentioned antenna structure, the band of the frequency response is broader. Therefore, in the above-mentioned antenna structure, the frequency response band can be increase and space can be saved in storing an antenna in a housing using a simple structure in which the antenna face of an antenna element is arranged orthogonal to the plane of the substrate.
