Mutual coupling reduction between closely spaced microstrip antennas by means of H‐shaped conducting wall. Issue 13 (3rd June 2016)

• Record Type: Journal Article
• Authors: Park, C.‐H.; Son, H.‐W.
• Is Part Of: Electronics letters. Volume 52:Issue 13(2016)
• Page Start: 1093
• Page End: 1094
• Publication Date: 2016-06-03
• Subjects: microstrip antennas -- resonators; mutual coupling reduction -- microstrip antennas -- H‐shaped conducting wall -- H‐shaped copper strip -- dielectric substrate -- resonators -- defected ground structures -- frequency 5.2 GHz; Electronics -- Periodicals; 621.381
• DOI: 10.1049/el.2016.1339
• Languages: English
• ISSNs: 0013-5194

Abstract

Abstract : This Letter presents a novel H‐shaped conducting wall structure that effectively suppresses the mutual coupling between two closely spaced microstrip antennas (MSAs). The wall consists of an H‐shaped copper strip printed on a dielectric substrate, and a row of periodic vias through which the strip is connected to a ground plane. The wall is inserted between the MSAs and surrounds half the periphery of each antenna. Measurements of a prototype show that the high isolation of about 51 dB is achieved between two MSAs separated by the edge‐to‐edge distance of 0.052 λ 0 at 5.2 GHz. The proposed structure greatly improves the isolation without causing any significant degradation of the antenna bandwidth, gain, or front‐to‐back ratio, unlike other isolation structures based on resonators or defected ground structures.