Reduction of mutual coupling between patch antennas using defected ground structure in L‐ and S‐bands

2019 ◽  
Vol 61 (12) ◽  
pp. 2730-2738
Author(s):  
Chengwei Zhao ◽  
Xiaoping Li ◽  
Chao Sun ◽  
He Huang
Keyword(s):  
Mutual Coupling ◽  
Patch Antennas ◽  
Defected Ground Structure ◽  
Ground Structure

scholarly journals Improving the Performances of Microstrip Antenna Array using Defected Ground Structure

2020 ◽  
Vol 9 (3) ◽  
pp. 1081-1086
Keyword(s):  
Antenna Array ◽  
Power Distribution ◽  
Mutual Coupling ◽  
Impedance Matching ◽  
Side Lobe ◽  
Power Divider ◽  
Side Lobe Level ◽  
Patch Antennas ◽  
Defected Ground Structure ◽  
Ground Structure

In this paper, a two elements antenna array with defective ground structure (DGS) has been designed to achieve significant gain, polarization purity and reduced mutual coupling. A 3 port Wilkinson power divider has been designed at 4.5 GHz frequency to obtain equal power distribution at the output ports. Two Rectangular microstrip patch antennas with DGS at the corners yield improved gain, impedance matching and polarization purity in both E and H plane. The reduction of mutual coupling and side lobe level (SLL) have been achieved by placing the dumbbell shaped DGS bellow the feed line of the power divider. The radiation performances obtained using the fabricated prototype agrees well with that of the simulated one. This array has been designed for C-band application.

Mutual Coupling Reduction by Novel Fractal Defected Ground Structure Bandgap Filter

2016 ◽  
Vol 64 (10) ◽  
pp. 4328-4335 ◽  
Author(s):  
Kun Wei ◽  
Jian-Ying Li ◽  
Ling Wang ◽  
Zi-Jian Xing ◽  
Rui Xu
Keyword(s):  
Mutual Coupling ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Mutual Coupling Reduction

scholarly journals PENURUNAN MUTUAL COUPLING ANTENA MIMO MENGGUNAKAN PERIODIK DEFECTED GROUND STRUCTURE U-SHAPE

2021 ◽  
Vol 5 (2) ◽  
pp. 42
Author(s):  
Liska Ammai ◽  
Levy Olivia Nur ◽  
Radial Anwar
Keyword(s):  
Massive Mimo ◽  
Mutual Coupling ◽  
Defected Ground Structure ◽  
Ground Structure

Pada penelitian ini, peningkat performansi antena mikrostrip MIMO dilakukan dengan menggunakan efek mutual coupling, maka dengan pencacatan bidang groundplane, atau yang biasa disebut dengan metode defected ground structure (DGS). Bentuk DGS yang digunakan adalah U-shape dan terbukti dapat mengurangi efek mutual coupling pada antena MIMO mencapai -22,833 dB dibandingkan dengan antena konvensional. Dengan menggunakan hingga 2 periodik, U-shape juga berhasil diperoleh pengurangan dimensi antena mencapai 29,89% dibandingkan dengan dimensi antena MIMO konvensional. Hal ini tentunya terbukti membuat metode DGS sesuai untuk digunakan pada antena dengan dimensi yang kecil dan mutual coupling yang baik pada massive MIMO pada aplikasi di perangkat portable. Kata Kunci: defected ground structure (DGS); antena mikrostrip; U-shape; mutual coupling

scholarly journals Efficient Isolation of an MIMO Antenna Using Defected Ground Structure

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1265
Author(s):  
Haoran Xing ◽  
Xinyan Wang ◽  
Zhenbin Gao ◽  
Xing An ◽  
Hong-xing Zheng ◽  
...  
Keyword(s):  
Reflection Coefficient ◽  
Internet Of Things ◽  
Mutual Coupling ◽  
Narrow Band ◽  
Scattering Matrix ◽  
Diversity Gain ◽  
Antenna Element ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Mimo Antenna

To implement efficient isolation between units of a multi-input multi-output (MIMO) antenna, a defected ground structure (DGS) has been investigated. An antenna with two elements operating at 5.8 GHz and fed by coaxial is considered. To reduce mutual coupling between the elements, a zigzag groove is inserted into the center of two elements formed as a DGS. To verify this design, a scattering matrix was tested, such as reflection coefficient S11 and transmission coefficient S21 between two element ports. Meanwhile, radiation pattern, current distribution, envelope correlation coefficient (ECC), and diversity gain of the antenna were simulated and measured. The results showed that the mutual coupling was reduced by 28.8 dB when a DGS was used, and the ECC was less than 0.02. Owing to these good performances, each antenna element can operate almost independently, and this MIMO antenna can be efficiently applied to the narrow band Internet of Things system.

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