Browsing by Author "Samsuzzaman, Md."

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A Bendable Wide Oblique Incident Angle Stable Polarization Insensitive Metamaterials Absorber for Visible Optical Wavelength Applications
(Elsevier, 2023-09-01) Chowdhury, Md. Zikrul Bari; Islam, Mohammad Tariqul; Hossain, Ismail; Alsaif, Haitham; Alshammari, Ahmed S.; Alzamil, Ahmed; Samsuzzaman, Md.
In the visible frequency range, the most common application is for the transmission of electromagnetic signals over air and time to an aerial receiver. They are implemented to check tapped live powered components as well as identify defects, thermal leaking hot spots, or electrical failures. This study investigates the use of a compact nonage-shaped meta material absorber (MMA) for wide-band visible applications by employing a three-layer substrate material structure consisting of metal, dielectric, and metal. In comparison to the most current study, the presented MMA has a smaller size, which represents a noticeable novelty. Moreover, the proposed MMA has bendable properties and two numerical simulation software have been used to validate the proposed MMA. This demonstrates the successful acquisition of data from both the CST and HFSS simulations. The proposed metamaterial absorber attained above 80% absorption in the visible ranges from 400 nm to 750 nm wavelength for the simulation mode of TE and TM, respectively. An overall unit cell size of 930 × 930 × 202 nm3 which achieves an average absorption of 95.61% in its operating band 519–677 nm for visible optical wavelength when the performance of the proposed MMA was verified using the HFSS software. Moreover, the constant absorption feature is stable over a large range of oblique incidence angles. The quality of the MMA is verified by assessing the PCR value. Wide-angle incidence angle stability, polarization insensitivity, and absorption with 15⁰ bending effects can all be observed in both modes (TM and TE). In addition, the absorption property of MMA was investigated structurally by applying electric and magnetic fields. The presented MMA can be used in wide-angle stability, MRI, color imaging, solar cells, thermal imaging, and so on.
A Dual Band Y-Shape Monopole Antenna for 5G Wireless Application
(INOE Publishing House, 2023-06-09) Chowdhury, MD. Zikrul Bari; Armghan, Ammar; Islam, Mohammad Tariqul; Hossain, Ismail; Rahman, MD. Naimur; Moniruzzaman, MD.; Majumder, Sarna; Samsuzzaman, Md.
In this paper, a novel dual-band Y-shaped monopole patch antenna is proposed, designed, and fabricated for a 5G wireless application. The radiator patch of the antenna's wide and length was fabricated on an FR-4 substrate with the dimension of the proposed antenna of 27.88×23.67×1.58 mm3. The CST studio suite is utilized for all the virtual simulations and analyses regarding fabricated antennas. The study reveals that the fabricated antenna has a bandwidth of 6.20 GHz, covering 3.20-4.60 GHz and 5.10-9.90 GHz frequency ranges, respectively. The antenna has a nice S11 characteristic, excellent impedance matching, and an almost omnidirectional radiation pattern. The S11 is observed at -23.30 dB, and -26.60 dB for the resonate frequency of 3.75 GHz and 7.10 GHz, correspondingly, which covers two Malaysian 5G, frequency bands. The peak gain is 4.78 dB, and the maximum efficiency is 92%, accordingly to the whole frequency band. The VSWR is ideal at 1.02. Finally, the proposed antenna is an attractive solution for 5G wireless communication..
A Miniaturized Antenna with Negative Index Metamaterial Based on Modified SRR and CLS Unit Cell for UWB Microwave Imaging Applications
(MDPI, 2015-01-23) Islam, Md. Moinul; Islam, Mohammad Tariqul; Samsuzzaman, Md.; Faruqu, Mohammad Rashed Iqbal; Misran, Norbahiah; Mansor, Mohd Fais
A miniaturized antenna employing a negative index metamaterial with modified split-ring resonator (SRR) and capacitance-loaded strip (CLS) unit cells is presented for Ultra wideband (UWB) microwave imaging applications. Four left-handed (LH) metamaterial (MTM) unit cells are located along one axis of the antenna as the radiating element. Each left-handed metamaterial unit cell combines a modified split-ring resonator (SRR) with a capacitance-loaded strip (CLS) to obtain a design architecture that simultaneously exhibits both negative permittivity and negative permeability, which ensures a stable negative refractive index to improve the antenna performance for microwave imaging. The antenna structure, with dimension of 16 × 21 × 1.6 mm3, is printed on a low dielectric FR4 material with a slotted ground plane and a microstrip feed. The measured reflection coefficient demonstrates that this antenna attains 114.5% bandwidth covering the frequency band of 3.4–12.5 GHz for a voltage standing wave ratio of less than 2 with a maximum gain of 5.16 dBi at 10.15 GHz. There is a stable harmony between the simulated and measured results that indicate improved nearly omni-directional radiation characteristics within the operational frequency band. The stable surface current distribution, negative refractive index characteristic, considerable gain and radiation properties make this proposed negative index metamaterial antenna optimal for UWB microwave imaging applications. Full Text Link: https://doi.org/10.3390/ma8020392
A Negative Index Metamaterial-Inspired UWB Antenna with an Integration of Complementary SRR and CLS Unit Cells for Microwave Imaging Sensor Applications
(MDPI, 2015-05-20) Islam, Mohammad Tariqul; Islam, Md. Moinul; Samsuzzaman, Md.; Faruque, Mohammad Rashed Iqbal; Misran, Norbahiah
This paper presents a negative index metamaterial incorporated UWB antenna with an integration of complementary SRR (split-ring resonator) and CLS (capacitive loaded strip) unit cells for microwave imaging sensor applications. This metamaterial UWB antenna sensor consists of four unit cells along one axis, where each unit cell incorporates a complementary SRR and CLS pair. This integration enables a design layout that allows both a negative value of permittivity and a negative value of permeability simultaneous, resulting in a durable negative index to enhance the antenna sensor performance for microwave imaging sensor applications. The proposed MTM antenna sensor was designed and fabricated on an FR4 substrate having a thickness of 1.6 mm and a dielectric constant of 4.6. The electrical dimensions of this antenna sensor are 0.20 λ × 0.29 λ at a lower frequency of 3.1 GHz. This antenna sensor achieves a 131.5% bandwidth (VSWR < 2) covering the frequency bands from 3.1 GHz to more than 15 GHz with a maximum gain of 6.57 dBi. High fidelity factor and gain, smooth surface-current distribution and nearly omni-directional radiation patterns with low cross-polarization confirm that the proposed negative index UWB antenna is a promising entrant in the field of microwave imaging sensors. Full Text Link: https://doi.org/10.3390/s150511601
Design of a compact UWB antenna with a partial ground plane on epoxy woven glass material
(De Gruyter, 2015-06-01) Islam, Md. Moinul; Islam, Mohammad Tariqul; Faruque, Mohammad Rashed Iqbal; Aldhaheri, Rabah W.; Samsuzzaman, Md.
A compact ultra-wideband (UWB) antenna is presented in this paper with a partial ground plane on epoxy woven glass material. The study is discussed to comprehend the effects of various design parameters with explicit parametric analyses. The overall antenna dimension is 0.22×0.26×0.016 λ. A prototype is made on epoxide woven glass fabric dielectric material of 1.6 mm thickness. The measured results point out that the reported antenna belongs to a wide bandwidth comprehending from 3 GHz to more than 11 GHz with VSWR<2. It has a peak gain of 5.52 dBi, where 3.98 dBi is the average gain. Nearly omnidirectional radiation patterns are observed within the operating frequency bands. A good term exists between simulation and measurement results, which lead the reported antenna to be an appropriate candidate for UWB applications. Full Text Link: https://doi.org/10.1515/secm-2014-0297
Double elliptical resonator based quad-band incident angle and polarization angle insensitive metamaterial absorber for wireless applications
(Scopus, 2024-04-24) Hasan, Md. Shakibul; Islam, Mohammad Tariqul; Samsuzzaman, Md.; Alamri, Saeed; Albadran, Saleh; Moniruzzaman, Md.; Soliman, Mohamed S.
In this article, a double elliptical split ring resonator-based quad band metamaterial absorber (MMA) is demonstrated for applications in the microwave range. The resonator is made up of four squares outside split rings and two elliptical split rings positioned in the middle of the structure. The resonating patch is placed over an FR-4 dielectric layer with a thickness of 1.6 mm. The unit cell has an electrical size of 0.103λ0 × 0.103λ0, where λ0 is the wavelength determined at 2.576 GHz. The MMA shows maximum absorption of 99.83% at 2.576 GHz, 99.98% at 5.648 GHz, 99.56% at 8.32 GHz, and 99.15% at 13.456 GHz with TE mode. For TM mode, at 2.576 GHz, 5.632 GHz, 8.304 GHz, and 13.44 GHz, corresponding absorptions are 99.21%, 99.67%, 99.5%, and 99%, respectively. The MMA is polarisation and incidence angle (0° to 90°) insensitivity for both TM and TE modes. The unit cell provides single negative characteristics including an EMR (effective medium ratio) of 9.71 and a Q factor (quality factor) over 25. The proposed MMA provides high harvesting efficiencies of 92.87%, 76.9%, 94.12%, and 90.97% for frequencies of 2.57 GHz, 5.64 GHz, 8.32 GHz, and 13.45 GHz, correspondingly. The equivalent circuit is modeled to understand the resonance behavior of the MMA and the circuit parameters are determined and validated using Advanced Design Systems (ADS) software. The performance of the MMA is examined using the prototype of the array of the unit cells in an experimental setup. The experimental outcome provides a close similarity with simulation outcomes indicating the good performance of the MMA. The metamaterial absorber's high performance makes it suitable for many applications, such as RF energy harvesting applications, image technologies, stealth technologies, and radar systems as well as minimizing electromagnetic interference in satellites.
Dual wideband N-shaped patch antenna loaded with shorting pin for wireless applications
(Acta Technica, 2014) Samsuzzaman, Md.; Islam, Mohammad T.; Mandeep, Jit S.; Nahar, K.; Islam, Md. M.
A compact N-shaped dual band patch antenna loaded by shorting pin is designed. The lessening in patch size is achieved by perturbing the surface current path on the edge of a circular patch antenna by two triangular slots which make the patch as N-shaped. The dual wideband is achieved by combining two triangular slots and shorting pin. Simulated results carried out by the Finite Element Method (FEM)-based simulator HFSS such as antenna impedance bandwidth, input impedance and radiation characteristics are presented and discussed. The lower impedance bandwidth 1.46 GHz covers from 2.89 GHz to 4.35 GHz and the upper impedance bandwidth 2.17 GHz covers from 7.69 GHz to 9.86 GHz. The overall dimensions of the antenna are 13 × 13 × 1.575 mm3. Full Text Link: https://www.researchgate.net/publication/274193301
Five band‐notched ultrawide band (UWB) antenna loaded with C‐shaped slots
(Wiley, 2015-03-27) Islam, Md M.; Islam, Mohammad Tariqul; Samsuzzaman, Md.; Faruque, Mohammad Rashed I.
A compact microstrip line‐fed antenna is presented with five band‐notched characteristics for UWB microwave applications. Five band‐notched characteristics have been achieved at the frequencies of 3.6, 5.2, 5.8, 7.5, and 8.3 GHz inseminating three C‐shaped slots on the radiating circular patch and two C‐shaped slots on the partial ground plane, which is validated experimentally by fabricating a printed prototype. This antenna exhibits nearly omnidirectional radiation pattern and better surface current flow with a gain of 1.62 dBi. This proposed antenna with VSWR < 2 and compact dimensions of 25 × 31 mm2 covers from 3.05 to 10.6 GHz, looking on forbidden 3.4–3.8 GHz WiMAX, 5–5.3 GHz WLAN, 5.6–6 WLAN, 7.2–7.65 GHz X‐band satellite communication and 7.95–8.55 ITU 8‐GHz band. Full Text Link: https://doi.org/10.1002/mop.29117
Gap Coupled Symmetric Square Split Ring High EMR Resonator-Based Metamaterial for S-, C-, and X-Bands Wireless Applications: Simulation and Experiment
(Elsevier, 2023-11-15) Hossen, Shawon; Alqahtani, Abdulrahman; Hossain, Ismail; Islam, Mohammad Tariqul; Moniruzzaman, Md.; Samsuzzaman, Md.
This article describes a metamaterial (MTM) based on a symmetric square ring resonator (SSRR) that exhibits epsilon negative (ENG) and near-zero index (NZI) properties. A 0.035 mm thick copper resonator is used to construct the proposed asymmetric MTM structure, designed on a 1.5 mm thick FR-4 substrate for microwave applications. The MTM structure attained optimum resonance at frequencies corresponding to the microwave frequency range of the S, C, and X bands, 2.88 GHz, 4.78 GHz, and 10.9 GHz, respectively. The near-zero index characteristics are realized in the frequency ranges 2.22–3.17 GHz, 4.52–5.10 GHz, and 9.63–11.36 GHz, while the ENG characteristics are realized in the frequency ranges 2.1–3.2 GHz, 4.57–5 GHz, and 9.7–11.4 GHz. The electrical dimensions of the structure are 0.139λ × 0.139λ × 0.014λ, corresponding to an estimated wavelength of 2.88 GHz. The effective medium ratio (EMR), which for this construction is 7.194, indicates the compactness of the design structure. Using CST 2019 simulation software, the proposed structure is designed and developed before its construction and performance evaluation. The circuit was validated by comparing the S21 response using the Advanced Design System (ADS) software. The response of S21 from the proposed MTM structure was almost identical when it was tested through simulation (using CST and ADS software) or actual measurements. The compact size, substantial electromagnetic response (ER), negative permittivity, almost zero permeability, and refractive index of this MTM make it perfect for wireless applications in S-, C-, and X-bands.
Microwave Imaging Sensor Using Compact Metamaterial UWB Antenna with a High Correlation Factor
(2015-07-23) Islam, Md. Moinul; Islam, Mohammad Tariqul; Faruque, Mohammad Rashed Iqbal; Samsuzzaman, Md.; Misran, Norbahiah; Arshad, Haslina
The design of a compact metamaterial ultra-wideband (UWB) antenna with a goal towards application in microwave imaging systems for detecting unwanted cells in human tissue, such as in cases of breast cancer, heart failure and brain stroke detection is proposed. This proposed UWB antenna is made of four metamaterial unit cells, where each cell is an integration of a modified split ring resonator (SRR), capacitive loaded strip (CLS) and wire, to attain a design layout that simultaneously exhibits both a negative magnetic permeability and a negative electrical permittivity. This design results in an astonishing negative refractive index that enables amplification of the radiated power of this reported antenna, and therefore, high antenna performance. A low-cost FR4 substrate material is used to design and print this reported antenna, and has the following characteristics: thickness of 1.6 mm, relative permeability of one, relative permittivity of 4.60 and loss tangent of 0.02. The overall antenna size is 19.36 mm × 27.72 mm × 1.6 mm where the electrical dimension is 0.20 λ × 0.28 λ × 0.016 λ at the 3.05 GHz lower frequency band. Voltage Standing Wave Ratio (VSWR) measurements have illustrated that this antenna exhibits an impedance bandwidth from 3.05 GHz to more than 15 GHz for VSWR < 2 with an average gain of 4.38 dBi throughout the operating frequency band. The simulations (both HFSS and computer simulation technology (CST)) and the measurements are in high agreement. A high correlation factor and the capability of detecting tumour simulants confirm that this reported UWB antenna can be used as an imaging sensor. Full Text Link: https://doi.org/10.3390/ma8084631
Modelling and analysis of a triple-band metamaterial absorber for early-stage cervical cancer HeLa cell detection
(2024-10-24) Anowarul Haque, S.M.; Ahmed, Meraj; Alqahtani, Abdulrahman; Rahman, Mahamudur; Tariqul Islam, Mohammad; Samsuzzaman, Md.
The paper introduces a unique design and analysis of a terahertz metamaterial absorber (MMA) that can be used for early detection of cervical cancer by employing microwave imaging techniques. Computer Simulation Technology (CST) is used to design and analyze the proposed absorber. The MMA operates in the frequency range of 6–8 THz and can absorb energy in three specific spectral bands: 6.606 THz, 6.824 THz, and 7.426 THz, with absorption peaks of 99.75 %, 99.87 %, and 99.73 % correspondingly. The working principle of the absorber is described using the impedance matching and interference theory. The electric field (E), magnetic field (H), and surface current of the MMA are also examined. Finally, detecting cancerous HeLa cells is also being investigated by analyzing the E-field and H-field using microwave imaging. The suggested biosensor features a high-quality factor of 494.3, a frequency shifts per refractive index of 1.08 THz/RIU, and a figure of merit (FOM) of 42. The suggested MMA-based sensor has numerous advantages and can be utilized for early-stage cervical cancer detection.
Multiband Highly Sensitive Metamaterial-based Thz Absorber for Edible Oil Adulteration Sensing
(Elsevier, 2024-07-15) Haque, S.M. Anowarul; Hossain, Md Sohayeb; Alqahtani, Abdulrahman; Islam, Mohammad Tariqul; Moniruzzaman, Md.; Samsuzzaman, Md.
A terahertz (THz) wave technology is very appealing for applications in detection in biomedicine, biological spectroscopy, material characterization, detection, imaging, sensing, and other convenient applications. Metamaterials (MMs) are artificial structures that have structures in a regular periodic arrangement and don’t exist in nature. By utilizing a proposed terahertz metamaterial absorber, a broad spectrum of adulterated lubricants can be detected. It is an efficient detection process that enables the development of a THz detection approach by making use of the metamaterial as a sensor. The proposed terahertz absorber is analyzed and optimized using the CST Microwave Studio 2019 software. The article proposed a multiband THz metamaterial absorber with a unit size of 70 µm. According to the demonstrated results, we can achieve five narrow absorption peaks with perfect absorption within the frequency range between (0.2–4.2) Terahertz. Also, the result shows that, the average absorbance of 99.07% at the resonance frequencies of 0.56, 1.42, 2.676, 3.14, and 3.89 THz. The E (electric) and H (magnetic)-field distributions on the resonator at different resonance frequencies were also analyzed as well as. The recommended metamaterial absorber has a good sensing capability at different resonant frequencies, with refractive index sensitivities of 80 GHz/RIU, 240 GHz/RIU, 480 GHz/RIU, 480 GHz/RIU, and 520 GHz/RIU obtained by modifying the refractive index of the sample holder or the analytic layer, respectively. As a result, the proposed detector has a high refractive index sensitivity, high Q-factor, and high FOM, making it suitable for detecting oil adulteration.
Multiband highly sensitive metamaterial-based THz absorber for edible oil adulteration sensing
(2024-07-24) Anowarul Haque, S.M.; Hossain, Md Sohayeb; Alqahtani, Abdulrahman; Tariqul Islam, Mohammad; Moniruzzaman, Md.; Samsuzzaman, Md.
A terahertz (THz) wave technology is very appealing for applications in detection in biomedicine, biological spectroscopy, material characterization, detection, imaging, sensing, and other convenient applications. Metamaterials (MMs) are artificial structures that have structures in a regular periodic arrangement and don’t exist in nature. By utilizing a proposed terahertz metamaterial absorber, a broad spectrum of adulterated lubricants can be detected. It is an efficient detection process that enables the development of a THz detection approach by making use of the metamaterial as a sensor. The proposed terahertz absorber is analyzed and optimized using the CST Microwave Studio 2019 software. The article proposed a multiband THz metamaterial absorber with a unit size of 70 µm. According to the demonstrated results, we can achieve five narrow absorption peaks with perfect absorption within the frequency range between (0.2–4.2) Terahertz. Also, the result shows that, the average absorbance of 99.07% at the resonance frequencies of 0.56, 1.42, 2.676, 3.14, and 3.89 THz. The E (electric) and H (magnetic)-field distributions on the resonator at different resonance frequencies were also analyzed as well as. The recommended metamaterial absorber has a good sensing capability at different resonant frequencies, with refractive index sensitivities of 80 GHz/RIU, 240 GHz/RIU, 480 GHz/RIU, 480 GHz/RIU, and 520 GHz/RIU obtained by modifying the refractive index of the sample holder or the analytic layer, respectively. As a result, the proposed detector has a high refractive index sensitivity, high Q-factor, and high FOM, making it suitable for detecting oil adulteration.
Tunable Asymmetric Square Split Ring Resonator Based Triple Band Metamaterial Absorber for Wireless Communication System
(Elsevier, 2024-01-20) Hasan, Md Shakibul; Islam, Mohammad Tariqul; Samsuzzaman, Md.; Alorifi, Fawzi; Shamsan, Zaid Ahmed; Almuhanna, Khalid; Rahim, Sharul Kamal Abdul; Soliman, Mohamed S.
This article presents a triple band square split ring with double circular split ring resonator incident angle-insensitive perfect metamaterial absorber. The MMA unit cell was manufactured using a FR4 substrate that had dimensions of 8 mm by 8 mm. With the flexibility of on-design adjusting of the highest absorption frequencies, the suggested MA displays peak absorption of 99.67 %, 99.85 %, and 99.97 % at 2.52 GHz, 6.99 GHz, and 9.28 GHz, correspondingly. The tuning metallic two circular split rings and square split ring resonator provide the possibility of frequency modification throughout three distinct frequency ranges: the first frequency range extends from 2.45 GHz to 2.53 GHz, the second frequency range extends from 6.91 GHz to 7 GHz, and the third frequency range extends from 8.85 GHz to 10.32 GHz. Furthermore, the suggested MA displays near-zero absorption at an oblique incidence angle of up to 45° for both the TE as well as TM modes. The unit cell demonstrates single negative properties, such as an effective medium ratio (EMR) of 14.88 and a quality factor (Q factor) that is more than 30 for both the TM mode as well as the TE mode. An equivalent circuit successfully demonstrated its performance capability, which indicated that it would create an MMA of good quality when using ADS software. A comparison between the measured results of the suggested MMA and the simulated one reveals that there is a significant amount of a similarity between both of them. Because of its easy design within small dimension, wide angular stability, strong absorption, good EMR, and flexibility to frequency tuning is suitable for a wide range of wireless communication system, especially satellite applications like electromagnetic interference reduction, radar systems, imaging, and stealth technology.