Electromagnetic band‐gap based corrugated structures for reducing mutual coupling of compact 60 GHz cavity‐backed antenna arrays in low temperature co‐fired ceramics

2013 ◽  
Vol 7 (9) ◽  
pp. 754-759 ◽  
Author(s):  
Yi‐Fong Lu ◽  
Yi‐Cheng Lin
Keyword(s):  
Low Temperature ◽  
Band Gap ◽  
Antenna Arrays ◽  
Mutual Coupling ◽  
60 Ghz ◽  
Electromagnetic Band Gap

scholarly journals Optimization of Electromangnetic Band Gap Structure for Mutual Coupling Reduction in Antenna Arrays-A Comparative Study

2018 ◽  
Vol 7 (3.6) ◽  
pp. 13
Author(s):  
K Praveen Kumar ◽  
Habibullah Khan
Keyword(s):  
Band Gap ◽  
Antenna Arrays ◽  
Mutual Coupling ◽  
Lower Layer ◽  
Ground Plane ◽  
Electromagnetic Band Gap ◽  
Array Antennas ◽  
Surface Wave Propagation ◽  
Square Planar ◽  
Band Gap Structure

In this paper, two new three layer (stacked) Electromagnetic Band Gap structures are proposed, named as Stacked Electromagnetic Band Gap (SEBG) and Progressive Stack Electromagnetic Band Gap (PSEBG) structures. Its electromagnetic (EM) properties are determined by using Finite element method (FEM) based simulator and obtained results are compared with classical mushroom type electromagnetic band gap (MEBG) structure. Both SEBG and PSEBG structures proposed in this paper consists of two layers above the conducting ground plane; a lower layer, contains array of small MEBGs with square patches and an upper layer contains square planar MEBG structure. Vertical conducting stubs passing through substrate shorting all square patches in both the layers with conducting ground. Three EBG structures are exhibiting the property of forbidden band gap (FBG), where surface wave propagation is restricted. The FBG property helps in minimization of mutual coupling between array antennas when electromagnetic band gap structures are incorporated between array elements. In this paper, the level of coefficient of mutual coupling between array antenna in the presence of SEBG and PSEBG are investigated, obtained results are compared with classical MEBG results. The co-efficient of mutual coupling is reduced up to 12dB in the presence of proposed models.

scholarly journals Development of Electromagnetic Band Gap Structures in the Perspective of Microstrip Antenna Design

2013 ◽  
Vol 2013 ◽  
pp. 1-22 ◽  
Author(s):  
Md. Shahidul Alam ◽  
Norbahiah Misran ◽  
Baharudin Yatim ◽  
Mohammad Tariqul Islam
Keyword(s):  
Band Gap ◽  
Antenna Arrays ◽  
Communication Systems ◽  
Performance Enhancement ◽  
Microstrip Antennas ◽  
Microwave Devices ◽  
Electromagnetic Band Gap ◽  
Wide Range ◽  
High Efficient ◽  
Gap Characteristics

Electromagnetic band gap (EBG) technology has become a significant breakthrough in the radio frequency (RF) and microwave applications due to their unique band gap characteristics at certain frequency ranges. Since 1999, the EBG structures have been investigated for improving performances of numerous RF and microwave devices utilizing the surface wave suppression and the artificial magnetic conductor (AMC) properties of these special type metamaterial. Issues such as compactness, wide bandwidth with low attenuation level, tunability, and suitability with planar circuitry all play an important role in the design of EBG structures. Remarkable efforts have been undertaken for the development of EBG structures to be compatible with a wide range of wireless communication systems. This paper provides a comprehensive review on various EBG structures such as three-, two-, and one-dimensional (3D, 2D, and 1D) EBG, mushroom and uniplanar EBG, and their successive advancement. Considering the related fabrication complexities, implementation of vialess EBG is an attractive topic for microwave engineers. For microstrip antennas, EBG structures are used in diversified ways, which of course found to be effective except in some cases. The EBG structures are also successfully utilized in antenna arrays for reducing the mutual coupling between elements of the array. Current challenges and limitations of the typical microstrip antennas and different EBG structures are discussed in details with some possible suggestions. Hopefully, this survey will guide to increasing efforts towards the development of more compact, wideband, and high-efficient uniplanar EBG structures for performance enhancement of antenna and other microwave devices.

Dual Band Notched EBG Structure based UWB MIMO/Diversity Antenna with Reduced Wide Band Electromagnetic Coupling

Frequenz ◽  
2017 ◽  
Vol 71 (11-12) ◽  
Author(s):  
Naveen Jaglan ◽  
Binod Kumar Kanaujia ◽  
Samir Dev Gupta ◽  
Shweta Srivastava
Keyword(s):  
Band Gap ◽  
Mutual Coupling ◽  
Electromagnetic Coupling ◽  
Impedance Matching ◽  
Ground Plane ◽  
Wide Band ◽  
Dual Band ◽  
Ultra Wide Band ◽  
Electromagnetic Band Gap ◽  
Diversity Antenna

AbstractA dual band-notched MIMO/Diversity antenna is proposed in this paper. The proposed antenna ensures notches in WiMAX band (3.3–3.6 GHz) besides WLAN band (5–6 GHz). Mushroom Electromagnetic Band Gap (EBG) arrangements are employed for discarding interfering frequencies. The procedure followed to attain notches is antenna shape independent with established formulas. The electromagnetic coupling among two narrowly set apart Ultra-Wide Band (UWB) monopoles is reduced by means of decoupling bands and slotted ground plane. Monopoles are 90° angularly parted with steps on the radiator. This aids to diminish mutual coupling and also adds in the direction of impedance matching by long current route. S

scholarly journals Reduction of Mutual Coupling between Closely Spaced Microstrip Antennas Arrays Using Electromagnetic Band-gap (2D-EBG) Structures

2018 ◽  
Vol 16 (1) ◽  
pp. 151 ◽  
Author(s):  
Ahmed Ghaloua ◽  
Jamal Zbitou ◽  
Larbi El Abdellaoui ◽  
Mohamed Latrach ◽  
Abdelali Tajmouati ◽  
...  
Keyword(s):  
Band Gap ◽  
Mutual Coupling ◽  
Microstrip Antennas ◽  
Electromagnetic Band Gap

scholarly journals Minimization of Mutual Coupling in Arrays using Cross-shape EBG

2019 ◽  
Vol 8 (11) ◽  
pp. 2599-2603
Keyword(s):  
Band Gap ◽  
Mutual Coupling ◽  
Unit Cell ◽  
Operating Frequency ◽  
Design Parameters ◽  
Substrate Thickness ◽  
Electromagnetic Band Gap ◽  
Area Reduction ◽  
Unit Cells ◽  
Current Scenario

In current scenario, the utilization of Electromagnetic Band Gap (EBG) has increased tremendously in microwave engineering. Mutual Coupling (MC) is a significant constraint to be measured in antennas specialization when used with arrays. Electromagnetic Band-Gap (EBG) is a well-known procedure applied in microwave and RF region due to its inherent bandgap feature at predefined frequency. MC arises due to surface currents excited on printed arrays whenever the substrate thickness ℇr > 1. By incorporating EBG in between array elements, various parameters like bandwidth, gain, radiation pattern, directivity, and current distribution can be improved based on the design parameters. Compactness and patch area reduction can be achieved through suitable unit cells of EBG structures. A patch performance is effective with better radiation characteristics and good return loss provided the operating frequency fall within the operating frequency of the unit-cell of the EBG. The unit cell can be constructed depending on the reflection phase, dispersion diagram. In this, a cross-EBG is used to enhance the MC between the arrays. The Cross EBG size is 6.3mm x 6.3mm. The antenna resonates at 5.8GHz WLAN range.

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