High-gain and ultrawide-band graphene patch antenna with photonic crystal covering 96.48% of the terahertz band

Khan, Md. Abdul Kaium; Ullah, Md Ibrahim; Alim, Mohammad Abdul

doi:10.1016/j.ijleo.2020.166056

Cited by 20 publications

(3 citation statements)

References 47 publications

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“…Due to the short wavelengths of umWave, large capacity antennas can be designed. The reasons why the scienti c community is intensifying research in the development of antennas that can work effectively in the THz band [7][8][9][10][11][12][13][14][15]. In [7] a microstrip patch antenna for wireless communication at terahertz bands is presented.…”

Section: Introductionmentioning

confidence: 99%

“…the presented antenna shows bandwidth of 1.24 THz with a maximum gain of 5.72 dBi. Khan et al have proposed in [10] a high-gain and ultrawide-band graphene-based patch antenna for the photonic crystal and dielectric grating application at terahertz frequency. The simulated antenna offers a − 10 dB impedance bandwidth of 9.552 THz along with a maximum gain of 21.22 dB and a maximum radiation e ciency of 93.23%.…”

Section: Introductionmentioning

confidence: 99%

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A circularly polarized wideband high gain antenna for THz wireless applications

Lchhab

Ghzaoui

2022

Opt Quant Electron

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For several years, the elds of new technologies have been experiencing a real boom. The use of the terahertz band is an appropriate solution to meet the requirements of these technology. However, this technology has special requirements among which its antennas must have high bandwidth of few THz and achieve high gain for high productivity. In this paper, we will focus on the design and analysis of an antenna for THz technology. The antenna structure proposed in this work has better performance in terms of bandwidth and gain. In fact, multiples slots were added to the antenna to enhance the antenna's bandwidth. in addition, to enhance the antenna performance in terms of gain and protect the antenna feed line against environmental jeopardies a thin layer as superstrate is used. The suggested antenna covers a wide − 10dB bandwidth from 0.9 THz to 17.3 THz with a peak gain of 12.8 dBi. Moreover, a VSWR less than 2 at the operating band is obtained. Furthermore, the suggested antenna has circular polarized radiations with an axial ration (AR) less than 3 dB over a wide band 13.6THz-17.3THz which mean that the proposed antenna is well suited for application where the transmitter and receiver are moving which is the most case for wireless system. Thus, the suggested THz antenna could be a successful choice for terahertz application like future high-speed short-range indoor wireless communication, explosive detections, arms detection, medical imaging, pharmaceutical analysis, and material characterization in the THz regime industrial inspections.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A circularly polarized wideband high gain antenna for THz wireless applications

Lchhab

Ghzaoui

2022

Opt Quant Electron

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“…7 The patch antennas using photonic crystal substrate for single and array elements have been investigated in literature. 8,9 Moreover, the patch THz antenna using graphene has been designed to investigate the effect of the feed line, which is designed as a compact or multiband THz antenna. 10,11 Also, the graphene material has been used for the ultra-wide band (UWB) antenna in the THz spectrum.…”

Section: Introductionmentioning

confidence: 99%

Dual-band THz antenna with SNG loads for biosensing and early skin cancer detection with Fano response: A numerical study

Poorgholam-Khanjari

Zarrabi

2021

Proceedings of the Institution of Mechanical Engineers, Part L:

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THz spectrum is one of the safest areas of light for the body which can be considered in biomedical sensing applications in the human body and can be utilized for high sensitivity detection. In this paper, a THz antenna with a single negative (SNG) load is developed for early cancer detection application. The SNG load is useful to increase the gain and efficiency of the antenna. The primary antenna has a circular slot on the ground plane. Metamaterial element is placed on the cylindrical dielectric. The total size of the antenna is 400 × 400 μm 2 and the loss-less quartz substrate is used to design the proposed antenna. In addition, the SNG load provides dual-band characteristics, and the proposed antenna covers 0.85 and 1 THz with high directivity and efficiency which is more than 90%. The achieved results proved that the antenna has higher sensitivity at a lower frequency. Moreover, we showed the proposed dual-band antenna can be used to increase the sensing accuracy of the device to detect the progress of cancer in a specific sample.

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