A Novel Parallel Coupled-Line Resonator For Array Antennas Coupling Isolation

Abstract

In this paper, a novel parallel coupled-line resonators(PCRs) structure is proposed to enhance the coupling isolation between microstrip antennas. The decoupling structure consists of five elements with the same structure. The attempted configuration provides band-reject characteristics at the design frequency of 3.6 GHz. The designed PCR is deployed in a two-element microstrip patch antenna array. The decoupling structure can achieve 7.2 dB coupling suppression in antenna array, and the gain of the antenna is not affected.