NDLI: Broadband antipodal tapered slot antenna array with low mutual coupling and high gain properties

Content Provider	IET Digital Library
Author	Xu, Ziyu Yang, Helin Zhang, Qisheng Guo, Linyan Yang, Zhengwei
Abstract	Strong mutual coupling always exists between the elements of the antenna array, thereby affecting its radiation capability. For this problem, 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. At last, the proposed ATSA array has broadband, high gain with lower mutual coupling properties. This decoupling and gain-enhancing mechanism can be applied to other antenna designs.
Starting Page	1653
Ending Page	1659
Page Count	7
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 10, Aug (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/10
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5928
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-04-18
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	1.4–10 GHz Antenna Accessory Antenna Array Antenna Designs Antenna Feeds Antenna Radiation Pattern Array Element ATSA Array Broadband Antenna Broadband Antipodal Tapered Slot Antenna Array Electromagnetic Coupling Entire Operating Frequency Band Frequency 1.4 GHz to 10.0 GHz Gain Reduction Gain-enhancing Mechanism High Gain Property High-frequency Gain Low Mutual Coupling Low- Frequency Gain Lower Mutual Coupling Property Microwave Antenna Array Noise Figure 3.2 DB Noise Figure 35.0 DB Radiation Capability Radiation Performance Single Antenna Slot Antenna Slot Antenna Array Split-ring Resonator Unit Cell Strong Mutual Coupling
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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