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A novel defect ground structure for decoupling closely spaced E-plane microstrip antenna array

Published online by Cambridge University Press:  31 May 2019

Zicheng Niu ,
Hou Zhang ,
Qiang Chen  and
Tao Zhong
Zicheng Niu*
Affiliation:
Air Force Engineering University, Xi'an, China
Hou Zhang
Affiliation:
Air Force Engineering University, Xi'an, China
Qiang Chen
Affiliation:
Air Force Engineering University, Xi'an, China
Tao Zhong
Affiliation:
Air Force Engineering University, Xi'an, China
*
Author for correspondence: Zicheng Niu, E-mail: [email protected]
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Abstract

In this paper, a novel decoupling technique for closely spaced E-plane patch antennas using defect ground structure (DGS) is proposed. The electric field coupling between the antennas is suppressed by etching DGS which consists of a pair of rectangular slots and four stubs on the ground plane. Moreover, unlike the other methods, the DGS is not etched in the middle of the antennas but loaded along the outer edge of the radiated patch. Thus, through the adopted technology the distance between the antenna elements is reduced and the isolation is increased. To validate the improvements by adopting the proposed technology, the array with DGS loading has been fabricated and then measured. The measurement results show that designed antennas have 95 MHz 10-dB impedance bandwidth, which is 25 MHz higher than that of the antenna without DGS. More importantly, isolation improvements have been increased from 8.5 to 31.3 dB by using the decoupling technique when the antennas are placed with a 0.032 λ0 edge-to-edge distance, where λ0 is the free-space wavelength. Therefore, this technique can be widely applied to improve isolation in a compact and low profile antenna system.

Keywords

Closely spaced antennadefect ground structureE-plane microstrip antennaisolation enhancementmutual coupling
Type
Industrial and Engineering Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 11 , Issue 10 , December 2019 , pp. 1069 - 1074
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2019 

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References

1.Wu, KL, Chang, N, Mei, WX and Zhang, ZY (2017) Array-antenna decoupling surface. IEEE Transactions on Antennas Propagation 65, 6728–6738.Google Scholar
2.Wei, CN and Wu, KL (2017) Array-antenna decoupling surfaces for Quasi-Yagi antenna arrays. Antenna and Propagation & USNC/URSI National Radio Science Meeting, pp. 2103–2104.Google Scholar
3.Niu, ZC, Zhang, H, Chen, Q and Zhong, T (2018) Isolation enhancement using a novel array-antenna decoupling surface for microstrip antennas. Progress In Electromagnetics Research M 72, 49–59.Google Scholar
4.Wang, ZY, Zhao, LY, Cai, YM, Zheng, SF and Yin, YZ (2018) A meta-surface antenna array decoupling (MAAD) method for mutual coupling reduction in a MIMO antenna system. Scientific Reports 8, 1–9, no. 3152.Google Scholar
5.Cheng, YF, Ding, X, Shao, W and Wang, BZ (2017) Reduction of mutual coupling between patch antennas using a polarization-conversion isolator. IEEE Antennas and Wireless Propagation Letters 16, 1257–1260.Google Scholar
6.Jung, S, Lim, YK and Lee, HY (2008) A coupled-defected ground structure lowpass filter using inductive coupling for improved attenuation. Microwave and Optical Technology Letters 50, 1541–1543.Google Scholar
7.Zhu, YZ, Zhang, XJ, Li, C, Li, F and Fang, GY (2008) Novel compact meander-slot DGS with high quality factor. Microwave and Optical Technology Letters 50, 3164–3169.Google Scholar
8.Habashi, A, Naurinia, J and Ghbadi, C (2012) A rectangular defected ground structure for reduction of mutual coupling between closely spaced microstrip antennas. in Proceedings of the 20th Iranian Conference on Electrical Engineering, pp. 1347–1350.Google Scholar
9.Biswas, S and Guha, D (2013) Stop-band characterization of an isolated DGS for reducing mutual coupling between adjacent antenna elements and experimental verification for dielectric resonator antenna array. International Journal of Electronics and Communications 67, 319–322.Google Scholar
10.Hou, DB, Xiao, S, Wang, BZ, Jiang, L, Wang, J and Hong, W (2009) Elimination of scan blindness with compact defected ground structures in microstrip phased array. IET Microwaves. Antennas Propagation 3, 269–275.Google Scholar
11.Veisee, S, Asadi, S and Hedayati, MK (2016) A novel compact defected ground structure and its application in mutual coupling reduction of a microstrip antenna. Turkish Journal of Electrical Engineering & Computer Sciences 24, 3664–3670.Google Scholar
12.Xiao, S, Tang, MC, Bai, YY, Gao, S and Wang, BZ (2011) Mutual coupling suppression in microstrip array using defected ground structure. IET Microwaves, Antennas & Propagation 5, 1488–1494.Google Scholar
13.Das, G, Sharma, A, Gangwar, RK and Sharawi, MS (2018) Triple-port, two-mode based two element cylindrical dielectric resonator antenna for MIMO applications. Microwave and Optical Technology Letter 60, 1566–1573.Google Scholar
14.Wei, K, Li, JY, Wang, L, Xing, ZJ and Xu, R (2016) S-shaped periodic defected ground structures to reduce microstrip antenna array mutual coupling. Electronics Letters 52, 1288–1290.Google Scholar
15.Chen, Q and Zhang, H (2018) Dual-patch polarization conversion metasurface-based wideband circular polarization slot antenna. IEEE Access 6, 74772–74777.Google Scholar
16.Khandelwal, MK, Kanaujia, BK, Dwari, S, Kumar, S and Gautam, AK (2016) Triple band circularly polarized microstrip antenna with defected ground structure for wireless applications. International Journal of Microwave & Wireless Technologies 8, 943–953.Google Scholar
17.Khandelwal, MK, Kumar, S and Kanaujia, BK (2018) Design, modeling and analysis of dual feed defected ground microstrip patch antenna with wide axial ratio bandwidth. Journal of Computational Electronics 17, 1019–1028.Google Scholar
18.Kanaujia, BK, Khandelwal, MK, Dwari, S, Kumar, S and Gautam, AK (2016) Analysis and design of compact high gain microstrip patch antenna with defected ground structure for wireless applications. in Wireless Personal Communications 91, 661–678.Google Scholar
19.Khandelwal, MK, Kanaujia, BK, Dwari, S and Kumar, S (2014) Bandwidth enhancement and cross-polarization suppression in ultra-wideband microstrip antenna with defected ground plane. Microwave and Optical Technology Letters 56, 2141–2146.Google Scholar
20.Kumar, C, Pasha, MI and Guha, D (2017) Defected ground structure integrated microstrip array antenna for improved radiation properties. IEEE Antennas and Wireless Propagation Letters 16, 310–312.Google Scholar
21.Ghosh, C-K (2016) A compact 4-channel microstrip MIMO antenna with reduced mutual coupling. International Journal of Electronics and Communications 70, 873–879.Google Scholar
22.Yang, X, Liu, Y, Xu, YX and Gong, SX (2017) Isolation enhancement in patch antenna array with Fractal UC-EBG structure and cross slot. IEEE Antennas Wireless Propagation Letters 16, 2175–2178.Google Scholar
23.Vishvaksenan, KS, Mithra, K, Kalaiarasan, R and Raj, KS (2017) Mutual coupling reduction in microstrip patch antenna arrays using parallel coupled-line resonators. IEEE Antennas Wireless Propagation Letters 16, 2146–2149.Google Scholar