Mutual coupling reduction between closely spaced microstrip antennas by means of H-shaped conducting wall
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 i...
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Published in | Electronics letters Vol. 52; no. 13; pp. 1093 - 1094 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
The Institution of Engineering and Technology
23.06.2016
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Subjects | |
Online Access | Get full text |
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Summary: | 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 λ0 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. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0013-5194 1350-911X 1350-911X |
DOI: | 10.1049/el.2016.1339 |