Patent attributes
Disclosed is a dual polarization-based small antenna for a mobile communication base station. The dual-polarized antenna includes a substrate, a first feed attached to one surface of the substrate, a second feed spaced apart from the first feed and attached to the one surface of the substrate, a radiator located above the first feed and the second feed, and a spiral resonator located between the first feed and the second feed. The dual-polarized antenna effectively provides a broad bandwidth and a high isolation characteristic while having a reduced size, and the spiral resonator allows the isolation characteristic at a certain narrow band range to be effectively enhanced by adjusting of the position, size, and shape of the spiral resonator without affecting the operating frequency of the dual-polarized antenna.
