Electromagnetic metamaterial insulator to eliminate substrate surface waves

Buell, K.; Mosallaei, Hossein; Sarabandi, Kamal

doi:10.1109/aps.2005.1551875

Cited by 13 publications

(6 citation statements)

References 5 publications

(4 reference statements)

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“…Thus, it is an exciting area for researchers to explore these unique properties and their relations for different metamaterials and apply them in various electromagnetics and antenna applications. Due to their unique band gap features, EBG structures can be regarded as a special type of metamaterials [4,5,9]. When they interact with electromagnetic waves, exciting phenomena appear and amazing features result.…”

Section: Introductionmentioning

confidence: 99%

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

Alam

Misran

Yatim

et al. 2013

International Journal of Antennas and Propagation

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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 onedimensional (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.

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Section: Introductionmentioning

confidence: 99%

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

Alam

Misran

Yatim

et al. 2013

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…These array structures are used for high gain applications [1]. Along with advantages these structures also have some drawbacks majority of which is mutual coupling between elements, this occur due to surface waves, space waves and covering of close fields results poor performance of an array [2]. In array design the coupling is effected by permittivity and thickness of substrate, size of ground plane, type of excited modes and gap between elements etc.…”

Section: Introductionmentioning

confidence: 99%

Corporate Feed, Compact 2X2 Array Antenna With Enhanced Radiation Characteristics using Metamaterial Structure

Shende*,

Somkuwar,

Kancherla

2019

IJRTE

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In current study, mushroom type metamaterial substrate is designed to operate at ISM band and is embedded in 2X2 array as a ground. Unique properties of mushroom type metamaterial substrate like as high impedance surface (HIS) helped in design of low aperture antenna, Artificial magnetic conductor (AMC) helps in enhancing the radiation characteristics and Forbidden band gap (FBG) helps in suppressing transverse electric (TE) and transverse magnetic (TM) wave propagation hence point of mutual coupling and side lobe levels are reduced. So, 2X2 array antenna with corporate feed resonating at 2.5GHz is embedded by array of mushroom type metamaterial unit cells is designed in HFSS and obtained results are compared with 2X2 array resonating at 2.5GHz on conventional conducting ground results. An enhancement in impedance band width of 2.47%, gain of 2.91dB and with lowered side lobe reduction of 3.74dB.

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“…Numerous techniques were studied and applied to alleviate mutual coupling in an array that includes cavity backing, partial substrate removal, corrugations, split ring resonators (SRR), defected ground structures (DGS), periodic structures like high impedance electromagnetic surfaces (HIES) or electromagnetic bandgap structures (EBG) etc . [3,4,5,6,7]. Integration HIES/EBG structures in a microstrip antenna array are quite attractive for their ability to suppress surface waves and reduce the mutual coupling effects.…”

Section: Introductionmentioning

confidence: 99%

Design of High Impedance Electromagnetic Surfaces for Mutual Coupling Reduction in Patch Antenna Array

Islam

Alam

2013

Materials

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A compact planar meander-bridge high impedance electromagnetic structure (MBHIES) was designed and its bandgap characteristics, mutual coupling reduction abilities were studied and compared in detail. Several parametric analyses were performed to obtain optimized design values and the transmission responses were calculated through the suspended microstrip line and waveguide simulation methods. The achieved bandgap is 2.3 GHz (2.55–4.85 GHz) with −61 dB minimum transmission coefficient level at the center frequency of 3.6 GHz. To see the effectiveness, the proposed design was inserted between a microstrip patch antenna array which operates at 3.8 GHz and whose operating bandwidth falls within the MBHIES bandgap. The surface wave suppression phenomenon was analyzed and simulated results are verified by measuring the fabricated prototypes, both are in good agreement. The configuration reduced the mutual coupling by 20.69 dB in simulation and 19.18 dB in measurement, without affecting the radiation characteristics of the array but increasing the gain slightly.

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Electromagnetic metamaterial insulator to eliminate substrate surface waves

Cited by 13 publications

References 5 publications

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

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

Corporate Feed, Compact 2X2 Array Antenna With Enhanced Radiation Characteristics using Metamaterial Structure

Design of High Impedance Electromagnetic Surfaces for Mutual Coupling Reduction in Patch Antenna Array

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