Browsing by Author "Faruque, M. R. I."

Now showing 1 - 8 of 8

A compact disc-shaped super wideband patch antenna with a structure of parasitic element
(IOS Press, 2016) Islam, M. M.; Islam, M. T.; Faruque, M. R. I.; Misran, N.; Samsuzzaman, M.; Hossain, M. I.; Alam, T.
In this paper, a disc-shaped monopole antenna has been investigated for super-wideband applications with a structure of parasitic element. The proposed SWB antenna consists of disc-shaped patch and a partial ground plane with a structure of parasitic element. The parasitic element consists of 4 rectangular embedded slots on the ground plane. This parasitic element on the ground plane leads the UWB frequency band into the SWB frequency band. This proposed SWB antenna is fed by a microstrip line and is printed on low dielectric FR4 material of 1.6 mm thickness. All the simulations are performed using commercially available, finite element method (FEM) based Ansoft high-frequency structure simulator (HFSS) software and CST Microwave Studio. Measured results exhibit that the proposed disc-shaped antenna shows a wide bandwidth which covers from 2.90 GHz to more than 20 GHz, with a compact dimension of 25 mm × 33 mm for VSWR < 2, observing a SWB frequency. A good combination is noticed between simulation and measurement. The simple construction, sharply, surface current flow, much impedance bandwidth, nearly omnidirectional radiation patterns, stable peak gain (3.20-6.22 dBi) and a considerable bandwidth dimension ratio (≥ 2062. 22) are a good deal sounder than the existing super wideband antennas which make it appropriate for many wireless communication systems such as L, C, X, UWB, Ku, and SWB bands. Full Text Link: http://doi.org/10.3233/JAE-140188
A compact monopole antenna with improved bandwidth for Ku band applications
(Universiti Kebangsaan Malaysia, 2015) Islam, M. M.; Islam, M. T.; Samsuzzaman, M.; Faruque, M. R. I.
A compact monopole antenna has been presented with improved bandwidth for Ku-band applications. The proposed Ku-band antenna is made of rectangular slots and circular slots on the ground and the patch, respectively, by a microstrip line of 50 Ω. It is designed on a printed circuit board of 15 mm × 15 mm× 1.6 mm using FR4 as a substrate material. High Frequency Structural Simulator (HFSS) is commercially available, which has been considered in this study depending on the concept of the Finite Element Method (FEM). 2.70 GHz (14.10 GHz to 16.80 GHz) is the achieved bandwidth of the proposed Ku-band antenna. The average gain is 3.66 dBi where 3.94 dBi is the maximum gain. The proposed Ku-band patch antenna exhibits smooth current distribution and durable nearly Omni-directional radiation patterns.
A new metasurface based on meta‐atom cluster for terahertz applications
(Wiley, 2017-05-27) Islam, M. M.; Faruque, M. R. I.; Islam, M. T.
In the manuscript, a new metasurface is presented for terahertz applications based on meta‐atom cluster. The metasurface having magnetic and electric resonances shows left‐handed metamaterial characteristics in the terahertz frequency. The meta atom cluster consists of split‐ring resonators based on conducting wire strip (a single loop) printed on RT5880LZ substrate material. The permeability and the permittivity are picked out from the complex scattering parameters. The calculation of the unloaded Q‐factor is executed for the meta‐atom cluster based metasurface in the terahertz frequency. The test of the metasurface has been performed using different dielectric samples loaded. Effective change has been realized in the transmission. This metasurface is novel in case of terahertz band due to left‐handed characteristics. This metasurface is appropriate for high‐performance filters and sensors due to high Q‐factors. Full Text Link: https://doi.org/10.1002/mop.30664
Compact and broadband antenna using double-negative transmission line metamaterial
(Springer, 2016-12-19) Islam, M. M.; Faruque, M. R. I.; Islam, M. T.; Mansor, M. F.
In this manuscript, double-negative transmission line (TL) metamaterial-inspired antenna has been proposed with compactness and improved bandwidth. This antenna is made of double-negative meander lines, microstrip feed and partial ground. Double-negative TL metamaterials show negative permittivity and permeability simultaneously and play important role for antenna miniaturization and the impedance bandwidth improved. The antenna provides 600 MHz bandwidth (−10 dB) with 23.81% fractional bandwidth. The antenna radiating element size is 0.07λ × 0.07λ at 2.51 GHz frequency with 3.72 dBi maximum gain where the electrical dimension is 0.30λ × 0.30λ. Full Text Link: https://doi.org/10.1007/s00339-016-0616-4
Design of a triple frequency band patch antenna on FR4 substrate material
(IEEE, 2014-03-06) Islam, M. M.; Islam, M. T.; Faruque, M. R. I.
In this paper, a triple frequency band patch antenna has been presented on FR4 substrate material. The proposed antenna has been designed on 40 mm× 40 mm printed circuit board and has been excited by microstrip line. High frequency structural simulator (HFSS) based on the finite element method (FEM) has been adopted. This antenna has been composed of circular and rectangular slots to generate multiple resonances. Return loss has been obtained below -10 dB from 9.52 GHz to 16.63GHz. The result has achieved stable Omni directional radiation pattern. The proposed multiband patch antenna has been discussed in details. Full Text Link: http://doi.org/10.1109/RFM.2013.6757282
Dual-Band Operation of a Microstrip Patch Antenna on a Duroid 5870 Substrate for Ku- and K-Bands
(Hindawi, 2013-11-14) Islam, M.M.; Islam, M.T.; Faruque, M. R. I.
The dual-band operation of a microstrip patch antenna on a Duroid 5870 substrate for Ku- and K-bands is presented. The fabrication of the proposed antenna is performed with slots and a Duroid 5870 dielectric substrate and is excited by a 50 Ω microstrip transmission line. A high-frequency structural simulator (HFSS) is used which is based on the finite element method (FEM) in this research. The measured impedance bandwidth (2 : 1 VSWR) achieved is 1.07 GHz (15.93 GHz–14.86 GHz) on the lower band and 0.94 GHz (20.67–19.73 GHz) on the upper band. A stable omnidirectional radiation pattern is observed in the operating frequency band. The proposed prototype antenna behavior is discussed in terms of the comparisons of the measured and simulated results. Full Text Link: http://dx.doi.org/10.1155/2013/378420
Microstrip line‐fed fractal antenna with a high fidelity factor for UWB imaging applications
(Wiley, 2015-08-28) Islam, M. M.; Islam, M. T.; Samsuzzaman, M.; Faruque, M. R. I.; Misran, N.
A printed microstrip line‐fed fractal antenna is presented with a high fidelity factor for UWB applications. The antenna structure of electrical dimension 0.24 λ × 0.33 λ at lower frequency 3.1 GHz is made of a fractal patch, a slotted partial ground plane, and a microstrip feed, which is fabricated on FR4 material of low cost and dielectric. Measured results demonstrates that the fractal antenna achieves fractional bandwidth of 117.88% covering the frequency range from 3.1 GHz to more than 12 GHz with a maximum gain 3.54 dBi at 6.25 GHz. An acceptable analogy is observed between measured and simulation results. The high fidelity factor, sharply surface current distribution, time domain performances, acceptable gain, and nearly omnidirectional radiation characteristic have validated the appropriateness of this proposed fractal antenna for UWB and microwave imaging applications. Full Text Link: https://doi.org/10.1002/mop.29401
Omni-directional microstrip monopole antenna for UWB microwave imaging system
(IEEE, 2015-08-27) Islam, M. M.; Islam, M.T.; Samsuzzaman, M.; Faruque, M. R. I.; Misran, N.
A miniaturized ultra-wideband antenna is presented for using in microwave imaging systems. This antenna structure consists of a radiating patch, a microstrip transmission line, and a partial ground plane which provides a wide bandwidth covering from 3.65 GHz to more than 11 GHz frequency. It has overall dimensions of 16 mm × 21 mm× 1.6 mm with a compact size. Negligible distortion is observed from the time domain characteristic of the proposed UWB antenna. It is appropriate for using in the field of microwave imaging systems due to its short pulse operation. The proposed antenna shows good directional radiation pattern, considerable gain level, surface current distribution and correlation coefficient for using in the microwave imaging systems. Full Text Link: http://doi.org/10.1109/I4CT.2015.7219645