Muzammil Jusoh
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Preferred name
Muzammil Jusoh
Official Name
Muzammil, Jusoh
Alternative Name
Jusoh, M.
Jusoh, Muzammil
Jusoh, Muzammi
Jusoh, Muzammir
Main Affiliation
Scopus Author ID
24483755700
Researcher ID
Z-1156-2019

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Compact ultra-wideband monopole antenna loaded with metamaterial

2020-02-01 , Al-bawri S.S. , Goh H.H. , Islam M.S. , Wong H.Y. , Jamlos M.F. , Narbudowicz A. , Muzammil Jusoh , Thennarasan Sabapathy , Khan, Rizwan D. , Islam M.T.

A printed compact monopole antenna based on a single negative (SNG) metamaterial is proposed for ultra-wideband (UWB) applications. A low-profile, key-shaped structure forms the radiating monopole and is loaded with metamaterial unit cells with negative permittivity and more than 1.5 GHz bandwidth of near-zero refractive index (NZRI) property. The antenna offers a wide bandwidth from 3.08 to 14.1 GHz and an average gain of 4.54 dBi, with a peak gain of 6.12 dBi; this is in contrast to the poor performance when metamaterial is not used. Moreover, the maximum obtained radiation efficiency is 97%. A reasonable agreement between simulation and experiments is realized, demonstrating that the proposed antenna can operate over a wide bandwidth with symmetric split-ring resonator (SSRR) metamaterial structures and compact size of 14.5 × 22 mm2 (0.148 λ0 × 0.226 λ0) with respect to the lowest operating frequency.

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Left-handed characteristics tunable c-shaped varactor loaded textile metamaterial formicrowave applications

2022-01-01 , Salem Al-Bawri S. , Islam M.T. , Hossain K. , Thennarasan Sabapathy , Muzammil Jusoh

This paper presents a textile-based C-shaped split-ring resonators (SRR) metamaterial (MTM) unit cells with an electrical tunability function. The proposed MTMwas composed of two symmetrical C-shaped SRR combined with a central diagonal metal bar, whereas the RF varactor diode is placed on the backside of the splitted ground plane. Stopband behavior of single and array MTM unit cells were analyzed while the achieved negative index physical characteristicswere widely studies. Though four differentMTM arrays (i.e., 1 × 1, 1 × 2, 2 × 1, and 2 × 2) were analyzed in simulation, a 2 × 2-unit cell array was chosen to fabricate, and it was further undergone experimental validation. This proposed tunable MTM exhibits double negative (DNG)/left-handed properties with an average bandwidth of more than 2.8 GHz. Furthermore, attainable negative permittivity and negative permeability are within 2.66 to 9.59 GHz and within 2.77 to 15 GHz, respectively, at the frequency of interest (between 1 and 15 GHz).Moreover, the proposed tunable MTM also showed tunable transmission coefficient characteristics. The proposed electrically tunable textile MTM might function in a dynamic mode, making it suitable for a variety of microwave-wearable applications. A satisfactory agreement between simulations and experiments were achieved, demonstrating that the proposed MTM can operate over a wide bandwidth.

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Metamaterial cell-based superstrate towards bandwidth and gain enhancement of quad-band CPW-fed antenna for wireless applications

2020-01-02 , Al-Bawri S.S. , Islam M.S. , Wong H.Y. , Jamlos M.F. , Narbudowicz A. , Muzammil Jusoh , Thennarasan Sabapathy , Islam M.T.

A multiband coplanar waveguide (CPW)-fed antenna loaded with metamaterial unit cell for GSM900, WLAN, LTE-A, and 5G Wi-Fi applications is presented in this paper. The proposed metamaterial structure is a combination of various symmetric split-ring resonators (SSRR) and its characteristics were investigated for two major axes directions at (x and y-axis) wave propagation through the material. For x-axis wave propagation, it indicates a wide range of negative refractive index in the frequency span of 2–8.5 GHz. For y-axis wave propagation, it shows more than 2 GHz bandwidth of near-zero refractive index (NZRI) property. Two categories of the proposed metamaterial plane were applied to enhance the bandwidth and gain. The measured reflection coefficient (S11) demonstrated significant bandwidths increase at the upper bands by 4.92–6.49 GHz and 3.251–4.324 GHz, considered as a rise of 71.4% and 168%, respectively, against the proposed antenna without using metamaterial. Besides being high bandwidth achieving, the proposed antenna radiates bi-directionally with 95% as the maximum radiation efficiency. Moreover, the maximum measured gain reaches 6.74 dBi by a 92.57% improvement compared with the antenna without using metamaterial. The simulation and measurement results of the proposed antenna show good agreement.

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Broadband Sub-6GHz Slot-based MIMO Antenna for 5G NR Bands Mobile Applications

2021-07-26 , Al-Bawri S.S. , Islam M.T. , Singh M.J. , Alyan E. , Muzammil Jusoh , Thennarasan Sabapathy , Padmanathan S. , Hossain K.

A slot-based broadband single and MIMO antennas for 5G New Radio (5G NR) mobile applications are presented in this paper. The proposed MIMO antenna is investigated by loading two antennas into a low-cost material with the partial ground for sub-6GHz. Each antenna element is consisted of a hexagonal-shaped slot and is composed of a 50Ω microstrip feed line. The WLAN 5-GHz band and 5G NR Bands n77/n78/n79 are covered with good impedance matching. Besides, the mutual coupling between the adjacent elements is less than 15-dB whereas the desired antenna elements gains are 3.19 dBi and 3.09 dBi at 3.5 GHz 4.2 GHz respectively.

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