Array Mutual Coupling Reduction Using L-Loading E-Shaped Electromagnetic Band Gap Structures

A mutual coupling reduction method between microstrip antenna array elements is proposed by using periodic L-loading E-shaped electromagnetic band gap structures. Two identical microstrip patch antennas at 2.55 GHz are settled together and used to analyze the performance of the designed two-element antenna array. The two antenna elements are settled with a distance of about0.26λ. To reduce the mutual coupling, the L-loading E-shaped electromagnetic band gap structures are used between these antenna elements. The simulated and measured results show that the isolation of the antenna array reaches 38 dB, which has a mutual coupling reduction of 26 dB in comparison with the antenna array without the decoupling structures.

Download Full-text

Four Element Microstrip Antenna Array with Electromagnetic Band Gap Structure and Silver Material Deposition for Reduced Mutual Coupling

Journal of Science and Technology ◽

10.30880/jst.2019.11.01.002 ◽

2019 ◽

Vol 11 (1) ◽

Author(s):

K. Prahlada Rao ◽

◽

Vani R.M ◽

P. V. Hunagund ◽

◽

...

Keyword(s):

Band Gap ◽

Antenna Array ◽

Microstrip Antenna ◽

Mutual Coupling ◽

Electromagnetic Band Gap ◽

Material Deposition ◽

Microstrip Antenna Array ◽

Band Gap Structure ◽

Gap Structure

Download Full-text

Mutual Coupling Reduction between Patch Antennas Using Meander Line

International Journal of Antennas and Propagation ◽

10.1155/2018/2586382 ◽

2018 ◽

Vol 2018 ◽

pp. 1-7 ◽

Cited By ~ 2

Author(s):

Qian Li ◽

Chong Ding ◽

Ruichao Yang ◽

Mingtao Tan ◽

Gangxiong Wu ◽

...

Keyword(s):

Antenna Array ◽

Microstrip Antenna ◽

Mutual Coupling ◽

Ground Plane ◽

Patch Antennas ◽

Radiation Patterns ◽

Simple Method ◽

Microstrip Patch ◽

Microstrip Antenna Array ◽

Meander Line

Meander lines (MLs) in two configurations are presented to reduce the mutual coupling (MC) between two microstrip patch antenna elements. Inserting a slot in the ground plane between the antenna elements is a simple method to reduce the MC, while adding the MLs in the slot of the ground can further reduce the MC. In the first configuration, one ML is inserted in the slot of the ground and a maximum MC reduction of 39 dB throughout the −10 dB bandwidth is achieved. What’s more, the radiation patterns are not changed compared with the dual-element microstrip antenna array with a slotted ground. For the second configuration, two MLs are added in the slot of the ground. It is found that a maximum isolation of 53 dB can be obtained. However, the radiation patterns are slightly changed compared with the dual-element microstrip antenna array with a slot in the ground. Meanwhile, the measured peak gain and efficiency of the dual-element microstrip antenna array in the two configurations are given. Along with this paper, several prototypes have been fabricated and measured. The simulated results are in good accordance with the measurements, which are presented to verify that MC reduction can be achieved between microstrip antenna elements by adding the MLs in the slotted ground.

Download Full-text