Compact MIMO antenna with low mutual coupling using defected ground structure

2016 ◽  
Author(s):  
Duong Thi Thanh Tu ◽  
Nguyen Van Hoc ◽  
Hoang Quan ◽  
Vu Van Yem
Keyword(s):  
Mutual Coupling ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Mimo Antenna

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.

scholarly journals Design of Wearable MIMO Antenna Using STUB Matching

2020 ◽  
pp. 373-377
Keyword(s):  
Patch Antenna ◽  
Mutual Coupling ◽  
Microstrip Patch Antenna ◽  
Wearable Electronics ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Mimo Antenna ◽  
Microstrip Patch ◽  
Smart Textile ◽  
Matching Technique

In this work, a Multi-band wearable microstrip patch antenna designed integrated with the defected ground structure(DGS)[1], and the substrate being used is Denim which is flexible[4] and can be easily fabricated on common wearable materials. This Radiating patch antenna is designed with the optimized dimensions and suits appropriately for the communication in wearable electronics as well as in smart textile application. The designed antenna operates at resonating frequencies of 4.885 GHz and 5.57 GHz. Further the design is modified to a 2-element MIMO [2] antenna using T-shaped Stub matching technique to reduce mutual coupling and resonate at frequency of 8GHz by designing and simulating in CST Microwave Studio 2019 software and the enhanced results like Directivity, Gain, E-field are obtained.

scholarly journals Characteristic mode analysis applied to reduce the mutual coupling of a four‐element patch MIMO antenna using a defected ground structure

2019 ◽  
Vol 14 (2) ◽  
pp. 215-226 ◽  
Author(s):  
Erik Fritz‐Andrade ◽  
Angel Perez‐Miguel ◽  
Ricardo Gomez‐Villanueva ◽  
Hildeberto Jardon‐Aguilar
Keyword(s):  
Mutual Coupling ◽  
Mode Analysis ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Characteristic Mode ◽  
Mimo Antenna

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
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