Mutual Coupling Optimization of Compact Microstrip Array Antenna

2016 ◽  
Vol 4 (3) ◽  
pp. 538
Author(s):  
Lin Teng ◽  
Jingrui Pei ◽  
Shoulin Yin
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Free Space ◽  
Mutual Coupling ◽  
Array Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Before And After ◽  
Microstrip Array ◽  
Microstrip Array Antenna

<p><em>In this paper, we perfect the mutual coupling of compact microstrip array antenna by designing a new defected ground structure. When the resonant frequency is 2.45GHz, array element spacing is 0.1 times of free space wavelength, we introduce new defected ground structure into antenna array. Then we use HFSS to make simulation and compare the changing of antenna's parameters before and after adding defected ground structure. The results demonstrate that the parameters representing mutual coupling in new model can reduce by 30dB, which effectively perfects the mutual coupling of compact microstrip array antenna.</em><em></em></p>

scholarly journals Dual-Frequency Two-Element Antenna Array with Suppressed Mutual Coupling

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yantao Yu ◽  
Lijun Yi ◽  
Xiaoya Liu ◽  
Zhaokai Gu ◽  
Nadia Media Rizka
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Coupling Effect ◽  
Dual Frequency ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Microstrip Antenna Array

An efficient technique utilizing the defected ground structure (DGS) to suppress the mutual coupling effect of a dual-frequency microstrip antenna array is studied. The proposed dual-frequency DGS beneath two patches includes two circular split ring slots, each of which corresponds to one resonant frequency of the patches. The characteristic of the compact DGS is theoretically and experimentally investigated. The prototypes of the patches arrays with and without the proposed DGS are fabricated. Both the simulated and measured results show that the mutual coupling between array elements has been obviously reduced at the two operating frequency bands with the implementation of the proposed DGS structure.

Using polygonal defect in ground structure to reduce mutual coupling in microstrip array antenna

2013 ◽  
Vol 28 (2) ◽  
pp. 194-201 ◽  
Author(s):  
Ali Farahbakhsh ◽  
Mohammad Mosalanejad ◽  
GholamReza Moradi ◽  
Shahram Mohanna
Keyword(s):  
Mutual Coupling ◽  
Array Antenna ◽  
Ground Structure ◽  
Microstrip Array ◽  
Microstrip Array Antenna

scholarly journals Mutual Coupling Reduction in Patch Antenna Array Based on EBG Structure for MIMO Applications

2019 ◽  
Vol 63 (4) ◽  
pp. 332-342 ◽  
Author(s):  
Yahiea Alnaiemy ◽  
Taha A. Elwi ◽  
Lajos Nagy
Keyword(s):  
Resonant Frequency ◽  
Antenna Array ◽  
Mutual Coupling ◽  
Multiple Input Multiple Output ◽  
Microstrip Antennas ◽  
Separation Distance ◽  
Rectangular Slot ◽  
Antenna Performance ◽  
Before And After ◽  
Input Multiple Output

This paper presents a printed rectangular slot microstrip antenna array of two elements based on an Electromagnetic Band Gap (EBG) structure. The proposed EBG structure is invented to improve the isolation between the radiating elements for multiple-input multiple-output (MIMO) application. Single and two slotted rectangular microstrip antennas are designed on an FR-4 substrate with a dielectric constant (εr) of 4.3 and loss tangent (tanδ) of 0.025 with thickness of 1.6 mm. The proposed EBG structure is designed as one planar row of 24 slots. The proposed array performance is tested numerically using Computer Simulation Technology Microwave Studio (CSTMW) of Finite Integration Technique (FIT) formulations. The antenna performance in terms of reflection coefficient (S11), isolation coefficient (S21), radiation patterns, boresight gain and Envelope Correlation Coefficient (ECC) are investigated before and after introducing the EBG structure to identify the significant enhancements. The proposed EBG structure is located between the radiating antenna elements to reduce the mutual coupling of the proposed antenna array. The edge to edge separation distance of the proposed antennas is λ0/16, where the λ0 is the free space wavelength at 2.45 GHz. The simulated results show a significant isolation enhancement from –6 dB to –29 dB at the first resonant frequency 2.45 GHz and from –10 dB to –25 dB at the second resonant frequency 5.8 GHz after introducing the EBG structure to the antenna array.

scholarly journals Reduction of Mutual Coupling and Return Loss in Microstrip Array Antennas Using Concave Rectangular Patches

2010 ◽  
Vol 2010 ◽  
pp. 1-5 ◽  
Author(s):  
Shahram Mohanna ◽  
Ali Farahbakhsh ◽  
Saeed Tavakoli ◽  
Nasser Ghassemi
Keyword(s):  
Mutual Coupling ◽  
Return Loss ◽  
Array Antenna ◽  
Effective Solution ◽  
Rectangular Array ◽  
Rectangular Patch ◽  
Array Antennas ◽  
Microstrip Array ◽  
Patch Length ◽  
Microstrip Array Antenna

An effective solution to reduce both the mutual coupling and return loss of a microstrip array antenna consisting of rectangular patches is proposed. The patch is made concave in both horizontal and vertical sides. Applying the proposed structure to a microstrip array antenna having two elements, the effects of patch concavity on the mutual coupling and return loss are simulated and studied. To obtain a concave rectangular patch array antenna having low amounts of mutual coupling and return loss, the patch length and width as well as the amounts of concavities are optimized using an enhanced genetic algorithm. To verify the simulation results, then, the optimal array antenna is fabricated. The simulation and experimental results confirm that the optimal concave rectangular array antenna has low amounts of mutual coupling and return loss.

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