What is it about?
An efficient method for suppressing the mutual coupling of array elements and improving the radiation performance of the antenna is proposed. In this study, take the antipodal tapered slot antenna (ATSA) array, for instance, a set of split-ring resonators (SRRs) unit cells is incorporated into the design to reduce leakage of the side walls at first. With the adding of SRRs, the mutual coupling in the entire operating frequency band (1.4–10 GHz) gets reduced, and the maximum reduction of 35 dB can be achieved. In addition, in order to compensate for the gain reduction caused by the isolation material, the grooves and semi-circular dielectric lens were introduced to enhance the low- and high-frequency gain, respectively. The gain of the proposed ATSA array can be improved by ∼3.2 dB.
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Why is it important?
The decoupling method used in this article is a good way to significantly reduce the coupling of ATSA in 1.4-10 GHz. Its decoupling range is wide, and the frequency range is mainly low frequency.
Perspectives
The method of low coupling and high gain in this paper based on metamaterials to achieve ultra-wideband antennas has certain guiding significance for improving the performance of antenna arrays. I hope this paper can provide a new idea for broadband decoupling.
Ziyu Xu
China University of Geosciences Beijing
Read the Original
This page is a summary of: A Broadband Antipodal Tapered Slot Antenna Array with Low Mutual Coupling and High Gain Properties, IET Microwaves Antennas & Propagation, April 2019, the Institution of Engineering and Technology (the IET),
DOI: 10.1049/iet-map.2018.5928.
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