A Novel Compact Split Ring Slotted Electromagnetic Bandgap Structure for Microstrip Patch Antenna Performance Enhancement

Alam, M. S.; Islam, Mohammad Tariqul; Misran, Norbahiah

doi:10.2528/pier12060702

Cited by 66 publications

(48 citation statements)

References 33 publications

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“…band gap (SWBG) is characterized by using the periodic structure as the ground plane for a suspended microstrip transmission line [37,39]. In contrast to the classical coplanar microstrip method and monopole method, the suspended structure shows the strong coupling nature and eliminates the effect of other parasitic propagation modes, which helps to achieve the band gap characteristics more obviously [40].…”

Section: Ebg Geometry and Bandgap Characterizationmentioning

confidence: 99%

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Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

Islam¹,

Alam²

2013

PIER

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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 × 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.

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Section: Ebg Geometry and Bandgap Characterizationmentioning

confidence: 99%

“…A 17 dB reduction of mutual coupling is noticed with a dual-layer configuration [36] while it is only 10 dB for a multi-layer [24] and 13 dB for a single layer [16] configuration. In [37], a dual band split-ring slotted (SRS)-EBG structure is proposed which reduced the mutual coupling by 20 dB at 13 GHz.…”

Section: Introductionmentioning

confidence: 99%

Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

Islam¹,

Alam²

2013

PIER

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“…Unlike other normal conductors, EBG does not support propagating surface waves, and it reflects electromagnetic waves with no phase reversal [11]. The gain of antenna can be improved by using EBG structure in two different ways; EBG structure as a superstrate [12,13] and EBG structure as a ground plane [14,15]. The gain of any antenna can be increased by EBG structure in the frequency band where the EBG structure is having high surface impedance behaviour or band stop property such that in that band the propagation of surface wave is suppressed which improves the antenna gain or radiated power [16].…”

Section: Introductionmentioning

confidence: 99%

An Uwb Fractal Antenna With Defected Ground Structure and Swastika Shape Electromagnetic Band Gap

Kushwaha¹,

Kumar²

2013

PIER B

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Abstract-In this paper, an ultra wideband antenna employing a defected ground structure is presented. The radiating element is a circular patch on which a fractal based geometry is inscribed in the form of slots and excited by a tapered feed-line for impedance matching. The antenna has an impedance bandwidth of 8.2 GHz (117% at centre frequency of 7 GHz) and a peak gain around 6 dB. To improve the impedance bandwidth and gain, a Swastika shape Electromagnetic band gap (EBG) structure is proposed. The unit cell of the proposed EBG has a compact size of 3 mm×3 mm and is obtained by introducing discontinuities in the outer ring of the Cross-Hair type EBG. The stop band (−20 dB) achieved with this EBG is 3.6 GHz (7.5 GHz-11.1 GHz) which is 1.6 GHz more than that achieved by a standard mushroomtype EBG of the same size and same number of elements. After application of the proposed EBG, there is an improvement of 12% in the impedance bandwidth while the peak gain increases by about 2-3 dB. The radiation of the antenna shows a dumb-bell shaped pattern in the E-plane and Omni-directional pattern in the H-plane. All the measured results are in good agreement with simulated results.

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“…Slot antenna is a known antenna for wireless applications, with all attributes that WLAN communication systems need. Methods such as notch technique, metamaterial, slot and fractal methods are used in order to design multi-band antennas [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Miniaturization of Antenna for Wireless Application With Difference Metamaterial Structures

Rahimi¹,

Zarrabi²,

Ahmadian³

et al. 2014

PIER

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Abstract-In this paper, periodic structures are investigated in antenna design for wireless applications. These antennas were compared with CRLH miniaturization method. Three different models of patch antenna with coaxial feed on EBG ground, metamaterial substrate or EBG/AMC structure have been presented here. Also two compact dual-band antennas have been designed and fabricated based on CRLH techniques for wireless and GSM applications. The first antenna has directional pattern and operates at 1760, 2550 and 3850 MHz (three-band antenna) with gain 2.1, −3.9 and 2.5 dBi, and it is dual polarized. The size of prototype patch antenna is 20 × 20 mm 2 which is reduced about 47% in comparison to conventional patch antenna at 2.5 GHz. The second antenna is designed by the use of interdigital capacitor and spiral inductor. Dimensions of antenna are 15.5×12 mm 2 , so the size is reduced about 69% in comparison to conventional microstrip patch antennas at 1.8 GHz. The second tri-band antenna operates at 1060 MHz, 1800 MHz and 2500 MHz in which two frequencies (1.8 and 2.5 GHz) are suitable for GMS and WLAN applications. Both structures have been designed and fabricated on FR4 low cost substrate with ε r = 4.4 and thickness of 1.6 mm. All simulations are done with CST and HFSS. Equivalent circuit and experimental results are also presented and compared.

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A Novel Compact Split Ring Slotted Electromagnetic Bandgap Structure for Microstrip Patch Antenna Performance Enhancement

Cited by 66 publications

References 33 publications

Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

Compact Ebg Structure for Alleviating Mutual Coupling Between Patch Antenna Array Elements

An Uwb Fractal Antenna With Defected Ground Structure and Swastika Shape Electromagnetic Band Gap

Miniaturization of Antenna for Wireless Application With Difference Metamaterial Structures

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