Compact 1 × 4 patch antenna array by means of EBG structures with enhanced bandwidth

Jam, Shahrokh; Malekpoor, Hossein

doi:10.1002/mop.30197

Cited by 16 publications

(26 citation statements)

References 19 publications

(20 reference statements)

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“…1,2 Various designs have been proposed in the kinds of literature to reduce the size of microstrip patch antennas. [3][4][5][6][7][8] A meandered patch or ground plane is presented in. 3 In such schemes, creating the slots into the patch and ground plane lengthen the current path and reduce the operating frequency.…”

Section: Introductionmentioning

confidence: 99%

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Bandwidth and gain improvement for reduced size of stacked microstrip antenna fed by folded triangular patch with half V‐shaped slot

Malekpoor

Hamidkhani

2021

Int J RF Microw Comput Aided Eng

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This study presents a new stacked design of reduced size broadband microstrip patch antenna for ultra-wideband (UWB) operation. A folded triangular patch's feeding technique, half V-shaped slot and shorting pins are employed to design the proposed stacked antenna. Shorting pins are applied at the edge of structure to miniaturize the size of the patch. The proposed design with the half V-shaped slot and without stacked patch provides the measured impedance bandwidth (S 11 <−10 dB) of 115.7% (4.35-16.3 GHz) for broadband application. In the proposed design with the half V-shaped slot, the wide bandwidth with an acceptable size reduction is achieved. By adding a stacked element on the upper patch, the impedance bandwidth of the proposed antenna is improved from 3.47 to 17.35 GHz. The stacked design includes a measured impedance bandwidth of 133.3% with reduced sizes of more than 78% compared to the corresponding full design and an enhanced maximum gain of 6.2 dBi. The obtained radiation and impedance results show that the proposed design is applicable for wideband operation. Besides, the effects of some basic concepts and surface currents on the suggested structure are investigated to explain their broadband performance.

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Section: Introductionmentioning

confidence: 99%

“…[3][4][5][6][7][8] A meandered patch or ground plane is presented in. 3 In such schemes, creating the slots into the patch and ground plane lengthen the current path and reduce the operating frequency. Realizing a shorting pin/wall 4 is also a useful method to prolong the effective electric length of the patch.…”

Section: Introductionmentioning

confidence: 99%

Bandwidth and gain improvement for reduced size of stacked microstrip antenna fed by folded triangular patch with half V‐shaped slot

Malekpoor

Hamidkhani

2021

Int J RF Microw Comput Aided Eng

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“…EBGs performance is defined and analyzed on the basis of the photonic band gap surfaces in periodic structures . Due to the distinct and appealing features, EBG structures are utilized at different applications . Based on the electromagnetic theories, it is well known that the image current of a perfect magnetic conductor (PMC) is in parallel and in‐phase with the original current.…”

Section: Introductionmentioning

confidence: 99%

“…1 Due to the distinct and appealing features, EBG structures are utilized at different applications. [2][3][4][5][6] Based on the electromagnetic theories, it is well known that the image current of a perfect magnetic conductor (PMC) is in parallel and in-phase with the original current. Artificial magnetic conductor (AMC) surfaces act as a PMC with in-phase reflection coefficient over the given frequency band.…”

Section: Introductionmentioning

confidence: 99%

Comparative investigation of reflection and band gap properties of finite periodic wideband artificial magnetic conductor surfaces for microwave circuits applications in X‐band

Malekpoor

2019

Int J RF Microw Comput Aided Eng

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In this study, novel designs of artificial magnetic conductors (AMCs) for wideband operation are introduced. By using two techniques of the planar parasitic patches and stacked elements, AMC unit cells are achieved. The first design of the AMC unit cell is composed of four symmetric patches with two arms, which are coupled to a rhombic patch at the center. The second AMC design is configured of two stacked patches, which are connected together through the air spacing. The first and second AMC designs operate at the frequencies of 10.15 and 10.65 GHz with ±90° reflection phase bandwidths of 8 to 12.38 GHz (43.15%) and 8 to 12.90 GHz (46%), respectively, for X‐band operation. The proposed AMC unit cells present prominent features such as symmetric structures and wide bandwidths with distinct capabilities. To achieve an accurate evaluation of AMC performance, the reflection and band gap properties of the finite periodic AMC surfaces are investigated. The finite periodic arrays of the AMC reflectors are implemented and tested. The measured results show that they can be applied for wideband applications in microwave circuits and low profile antennas. The 15 × 15 AMC planar and stacked arrays under normal incidence operate at the frequencies of 9.89 and 10.25 GHz with the measured bandwidths of 7.85 to 12.02 GHz and 7.77 to 12.58 GHz, respectively. In addition, to identify the band gap properties of the finite periodic planar and stacked AMC arrays, the method of the suspended microstrip line is applied. For this purpose, the measured band gaps of the planar and stacked arrays include the ranges of 8.12 to 12.63 GHz and 7.81 to 12.10 GHz below −20 dB, respectively.

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“…Researchers have come up with various types of EBG design structures to enhance the performance of these antennas. [8][9][10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Multi Element Microstrip Antenna Arrays Using Electromagnetic Band Gap Structures

Rao¹

2018

Helix

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This paper discusses the improvement in the performance of two, four and eight element microstrip antenna array using Electromagnetic Band Gap structures. The antenna arrays are designed at 6 GHz. The dielectric substrate used is FR-4 glass epoxy with dielectric constant of 4.2 and loss tangent of 0.0245. The two element conventional antenna array is producing bandwidth of 2.35 % and gain of 5.06 dB. The modified two element antenna array is producing greater bandwidth of 61.12 % and higher gain 8.34 dB. The four element conventional antenna array is producing bandwidth of 4.89 % and gain of 6.81 dB. The modified four element antenna array is producing improved bandwidth of 73.39 % and gain of 11.09 dB. The eight element conventional antenna array is producing bandwidth of 4.98 % and gain of 7.44 dB. The modified eight element antenna array is producing enhanced bandwidth of 85.74 % and healthier gain of 13.77 dB. All the modified microstrip antenna arrays show appreciable decrease in mutual coupling compared to their respective conventional antenna arrays. The radiation characteristics of the modified antenna arrays depict good reduction in back lobe radiation. The antenna arrays are designed using IE3D simulation software and measured results are obtained using vector network analyzer.

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Compact 1 × 4 patch antenna array by means of EBG structures with enhanced bandwidth

Cited by 16 publications

References 19 publications

Bandwidth and gain improvement for reduced size of stacked microstrip antenna fed by folded triangular patch with half V‐shaped slot

Bandwidth and gain improvement for reduced size of stacked microstrip antenna fed by folded triangular patch with half V‐shaped slot

Comparative investigation of reflection and band gap properties of finite periodic wideband artificial magnetic conductor surfaces for microwave circuits applications in X‐band

Multi Element Microstrip Antenna Arrays Using Electromagnetic Band Gap Structures

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