Compact EBG Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements
TLDR
In this article, a 2 x 5 EBG lattice is inserted between the E-plane coupled array which reduced the coupling level by 17 dB without any adverse effect on the radiation performances.Abstract:
The periodic structure like electromagnetic band gap (EBG) is a hot research topic in the academia and RF-microwave industry due to their extraordinary surface wave suppression property. This study involved in designing a compact uni-planar type EBG structure for a 2.4 GHz resonant frequency band. Double folded bend metallic connecting lines are successfully utilized to realize a low frequency structure while a size reduction of 61% is achieved compared to the theoretically calculated size. From the transmission response, the surface wave band gap (SWBG) is found to be 1.2 GHz (1.91-3.11 GHz) whereas the artificial magnetic conductor (AMC) characteristic is observed at 3.3 GHz. The FEM based EM simulator HFSS is used to characterize the EBG structure. The SWBG property is utilized for alleviation of mutual coupling between elements of a microstrip antenna array. A 2 x 5 EBG lattice is inserted between the E-plane coupled array which reduced the coupling level by 17 dB without any adverse effect on the radiation performances.read more
Citations
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A Comprehensive Survey on “Various Decoupling Mechanisms With Focus on Metamaterial and Metasurface Principles Applicable to SAR and MIMO Antenna Systems”
Mohammad Alibakhshikenari,Fatemeh Babaeian,Bal Singh Virdee,Sonia Aissa,Leyre Azpilicueta,Chan H. See,Ayman A. Althuwayb,Isabelle Huynen,Raed A. Abd-Alhameed,Francisco Falcone,Ernesto Limiti +10 more
TL;DR: It is shown that the mutual-coupling reduction methods inspired by MTM and MTS concepts can provide a higher level of isolation between neighbouring radiating elements using easily realizable and cost-effective decoupling configurations that have negligible consequence on the array’s characteristics such as bandwidth, gain and radiation efficiency, and physical footprint.
Journal ArticleDOI
Mutual Coupling Suppression Between Two Closely Placed Microstrip Patches Using EM-Bandgap Metamaterial Fractal Loading
Mohammad Alibakhshikenari,Mohsen Khalily,Bal Singh Virdee,Chan H. See,Raed A. Abd-Alhameed,Ernesto Limiti +5 more
TL;DR: The proposed technique can be applied retrospectively and is applicable in closely placed patch antennas in arrays found in multiple-input multiple-output and radar systems.
Journal ArticleDOI
Millimeter-Wave Compact EBG Structure for Mutual Coupling Reduction Applications
TL;DR: In this paper, a new millimeter-wave (MMW), electromagnetic band-gap (EBG) structure without the use of metallic vias or vertical components is formed by etching two slots and adding two connecting bridges to a conventional uniplanar EBG unit-cell.
Journal ArticleDOI
Study on isolation improvement between closely-packed patch antenna arrays based on fractal metamaterial electromagnetic bandgap structures
Mohammad Alibakhshikenari,Bal Singh Virdee,Chan See,Raed A. Abd-Alhameed,Ammar H. Ali,Francisco Falcone,Ernesto Limiti +6 more
TL;DR: In this paper, a decoupling metamaterial (MTM) configuration based on fractal electromagnetic-bandgap (EMBG) structure is shown to significantly enhance isolation between transmitting and receiving antenna elements in a closely-packed patch antenna array.
Journal ArticleDOI
Mutual-Coupling Isolation Using Embedded Metamaterial EM Bandgap Decoupling Slab for Densely Packed Array Antennas
Mohammad Alibakhshikenari,Mohsen Khalily,Bal Singh Virdee,Chan H. See,Raed A. Abd-Alhameed,Ernesto Limiti +5 more
TL;DR: The proposed MTM-EMBG structure is a cross-shaped microstrip transmission line on which are imprinted two outward facing E-shaped slits to suppress surface currents that would otherwise contribute towards mutual coupling between the array elements.
References
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Journal ArticleDOI
Microstrip antennas integrated with electromagnetic band-gap (EBG) structures: a low mutual coupling design for array applications
Fan Yang,Yahya Rahmat-Samii +1 more
TL;DR: In this paper, a mushroom-like E-plane coupled E-strip antenna array on a thick and high permittivity substrate has been analyzed using the finite-difference time-domain (FDTD) method.
Journal ArticleDOI
Mutual Coupling Reduction in Patch Antenna Arrays by Using a Planar EBG Structure and a Multilayer Dielectric Substrate
TL;DR: In this paper, a planar electromagnetic band gap (EBG) structure based on a truncated frequency selective surface (FSS) grounded slab is proposed for patch antenna arrays, keeping both the element separation smaller than for grating lobes avoidance and the patch antenna size large enough to have a good antenna directivity.
Journal ArticleDOI
A novel compact electromagnetic-bandgap (EBG) structure and its applications for microwave circuits
TL;DR: In this article, a novel electromagnetic-bandgap (EBG) structure in a fork-like shape is investigated, which provides an additional degree of freedom to adjust the bandgap position and is applied to design a novel reconfigurable multiband EBG structure.
Journal ArticleDOI
Microstrip antenna phased array with electromagnetic bandgap substrate
Z. Iluz,Reuven Shavit,R. Bauer +2 more
TL;DR: The results show a reduction in mutual coupling between elements and provide a possible solution to the "blind spots" problem in phased array applications with printed elements.
Journal ArticleDOI
Triple Band-Notched Planar UWB Antenna Using Parasitic Strips
TL;DR: In this article, a planar ultra-wideband (UWB) antenna with triple band notch characteristics is proposed, which consists of a rectangular radiating patch, a modifled partial ground plane, and has an overall dimension of 30 £ 22mm 2.
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