Nazmus Shakib - Academia.edu (original) (raw)
Papers by Nazmus Shakib
Page 1. Design of Microstrip Antenna for GPS Application Muhammad Fadhli Bukhori1, Norbahiah Misr... more Page 1. Design of Microstrip Antenna for GPS Application Muhammad Fadhli Bukhori1, Norbahiah Misran1,2, Mohammad Tariqul Islam2 Mawarni Mohamed Yunus1,2 and Mohammed Nazmus Shakib 1,2 1Department of Electrical ...
The H shaped patch stacked with an E-H shaped patch antenna configuration with folded patch feed ... more The H shaped patch stacked with an E-H shaped patch antenna configuration with folded patch feed has been designed in this paper. The particular feeding technique, the optimized shape of the patch slots, and the stacked structure made it possible to satisfy VSWR and radiation pattern requirements in the pertinent frequency band of 98% bandwidth covering the frequency range from 3.47 to 10.14 GHz. Despite the small area and thickness, this antenna can be made from copper sheet, so that it is easier to fabricate.
In this paper, a novel multiple slot microstrip patch antenna with enhanced bandwidth is presente... more In this paper, a novel multiple slot microstrip patch antenna with enhanced bandwidth is presented. The design adopts contemporary techniques namely; probe feeding, inverted patch structure and multiple slotted patch. The composite effect of integrating these techniques and by introducing the novel multiple shaped patch, offer a low profile, wide bandwidth, high gain and compact antenna element. The proposed patch has a compact dimension of 0.707 lambda0 times 0.354 lambda0 (where lambda0 is the guided wavelength of the center operation frequency). With the proposed concept, an antenna prototype is simulated and analyzed. The proposed antenna achieves a fractional bandwidth of 27.15% (1.91 to 2.51 GHz) at 10 dB return loss while maintaining a maximum gain of 10.5 dBi. The design is suitable for array applications especially for base station.
Progress in Electromagnetics Research-pier, 2009
A new high gain wideband L-probe fed inverted EE-H shaped slotted (LEE-H) microstrip patch antenn... more A new high gain wideband L-probe fed inverted EE-H shaped slotted (LEE-H) microstrip patch antenna is presented in this paper. The design adopts contemporary techniques; L-probe feeding, inverted patch structure with air-filled dielectric, and EE-H shaped patch. The integration of these techniques leads to a new patch antenna with a low profile as well as useful operational features, as the broadband and high gain. The measured result showed satisfactory performance with achievable impedance bandwidth of 21.15% at 10 dB return loss (VSWR ≤ 2) and a maximum gain of 9.5 dBi. The antenna exhibits stable radiation pattern in the entire operating band.
A folded patch fed compact UWB antenna is proposed and designed. The UWB band is obtained by E-H ... more A folded patch fed compact UWB antenna is proposed and designed. The UWB band is obtained by E-H shaped stacked with H shaped patch, fed with a folded patch feed and the size reduction is realized through the use of shorting wall. The antenna has a compact structure, and the total size is 15 by 14 mm by 10 mm. A relative impedance bandwidth of 100% (from 3.46 to 10.36 GHz) is achieved. Also, the antenna is able to achieve the stable radiation performance with gain greater than 4 dBi across the UWB band.
Information Technology Journal, 2010
ABSTRACT In this study, a new Compact Coplanar Waveguide (CPW) fed antenna is presented. The impe... more ABSTRACT In this study, a new Compact Coplanar Waveguide (CPW) fed antenna is presented. The impedance matching and the radiation characteristics of this proposed structure is studied using method of moment techniques. The proposed antenna is based on CPW feed configuration with C shaped patch and two notches. The achievable bandwidth of the proposed antenna obtained about 400 MHz (5.02-5.42 GHz) at -10 dB return loss which corresponds to WLAN 5.2 GHz frequency band and the achievable gain is 8.5 dBi. Stable radiation characteristics are obtained across the operating band.
A novel compact stacked patch antenna with a folded patch feed is presented for Ultrawideband (UW... more A novel compact stacked patch antenna with a folded patch feed is presented for Ultrawideband (UWB) application. The bandwidth is obtained by rectangular patch stacked with H shape rectangular patch, fed with a folded patch feed and the size reduction is realized through the use of shorting wall. The new design achieves an impedance bandwidth of 111.08% across the frequency range of 3.39GHz -11.86 GHz. The antenna occupies a compact dimension of 0.432λ g by 0.381λ g by 0.229λ g (λ g is the wavelength of center operating frequency). Antenna pattern shows good performance with consistent radiation patterns, and considerable gain over entire frequency band. The design method and the parametric studies are also described.
In this paper, a novel double E-H shaped patch on a relatively thin substrate (about 0.01 0 λ ) i... more In this paper, a novel double E-H shaped patch on a relatively thin substrate (about 0.01 0 λ ) is proposed. The design adopts contemporary techniques; L-probe feeding, inverted patch structure with air-filled dielectric, and slotted patch. The composite effect of integrating these techniques and by introducing the novel patch, offer a low profile, broadband, high gain, and compact antenna element. Simulated results indicate that a 21.79% fractional impedance bandwidth is achieved with respect to the centre frequency of 2.065 GHz and the maximum achievable gain of 9.5 dBi. The proposed patch has a compact dimension of 0.544 0 λ × 0.275 0 λ (where λ 0 is the guided wavelength of the centre operating frequency). The design is suitable for array applications with respect to a given frequency of 1.84-2.29 GHz.
In this paper, a new design technique for enhancing bandwidth that improves the performance of a ... more In this paper, a new design technique for enhancing bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This paper presents a novel wideband probe fed inverted slotted microstrip patch antenna. The design adopts contemporary techniques; coaxial probe feeding, inverted patch structure and slotted patch. The composite effect of integrating these techniques and by introducing the proposed patch, offer a low profile, broadband, high gain, and low cross-polarization level. The results for the VSWR, gain and co-and cross-polarization patterns are presented. The antenna operating the band of 1.80-2.36 GHz shows an impedance bandwidth (2:1 VSWR) of 27% and a gain of 10.18 dBi with a gain variation of 1.12 dBi. Good radiation characteristics, including a cross-polarization level in xz-plane less than -42 dB, have been obtained.
Progress in Electromagnetics Research-pier, 2009
AbstractA broadband inverted EH shaped microstrip patch antenna is proposed and experimentally i... more AbstractA broadband inverted EH shaped microstrip patch antenna is proposed and experimentally investigated. The antenna employs novel EH shaped patch with L-probe feed technique. Prototype of the proposed antenna has been fabricated and measured for electromagnetic analysis ...
Page 1. Design of Microstrip Antenna for GPS Application Muhammad Fadhli Bukhori1, Norbahiah Misr... more Page 1. Design of Microstrip Antenna for GPS Application Muhammad Fadhli Bukhori1, Norbahiah Misran1,2, Mohammad Tariqul Islam2 Mawarni Mohamed Yunus1,2 and Mohammed Nazmus Shakib 1,2 1Department of Electrical ...
The H shaped patch stacked with an E-H shaped patch antenna configuration with folded patch feed ... more The H shaped patch stacked with an E-H shaped patch antenna configuration with folded patch feed has been designed in this paper. The particular feeding technique, the optimized shape of the patch slots, and the stacked structure made it possible to satisfy VSWR and radiation pattern requirements in the pertinent frequency band of 98% bandwidth covering the frequency range from 3.47 to 10.14 GHz. Despite the small area and thickness, this antenna can be made from copper sheet, so that it is easier to fabricate.
In this paper, a novel multiple slot microstrip patch antenna with enhanced bandwidth is presente... more In this paper, a novel multiple slot microstrip patch antenna with enhanced bandwidth is presented. The design adopts contemporary techniques namely; probe feeding, inverted patch structure and multiple slotted patch. The composite effect of integrating these techniques and by introducing the novel multiple shaped patch, offer a low profile, wide bandwidth, high gain and compact antenna element. The proposed patch has a compact dimension of 0.707 lambda0 times 0.354 lambda0 (where lambda0 is the guided wavelength of the center operation frequency). With the proposed concept, an antenna prototype is simulated and analyzed. The proposed antenna achieves a fractional bandwidth of 27.15% (1.91 to 2.51 GHz) at 10 dB return loss while maintaining a maximum gain of 10.5 dBi. The design is suitable for array applications especially for base station.
Progress in Electromagnetics Research-pier, 2009
A new high gain wideband L-probe fed inverted EE-H shaped slotted (LEE-H) microstrip patch antenn... more A new high gain wideband L-probe fed inverted EE-H shaped slotted (LEE-H) microstrip patch antenna is presented in this paper. The design adopts contemporary techniques; L-probe feeding, inverted patch structure with air-filled dielectric, and EE-H shaped patch. The integration of these techniques leads to a new patch antenna with a low profile as well as useful operational features, as the broadband and high gain. The measured result showed satisfactory performance with achievable impedance bandwidth of 21.15% at 10 dB return loss (VSWR ≤ 2) and a maximum gain of 9.5 dBi. The antenna exhibits stable radiation pattern in the entire operating band.
A folded patch fed compact UWB antenna is proposed and designed. The UWB band is obtained by E-H ... more A folded patch fed compact UWB antenna is proposed and designed. The UWB band is obtained by E-H shaped stacked with H shaped patch, fed with a folded patch feed and the size reduction is realized through the use of shorting wall. The antenna has a compact structure, and the total size is 15 by 14 mm by 10 mm. A relative impedance bandwidth of 100% (from 3.46 to 10.36 GHz) is achieved. Also, the antenna is able to achieve the stable radiation performance with gain greater than 4 dBi across the UWB band.
Information Technology Journal, 2010
ABSTRACT In this study, a new Compact Coplanar Waveguide (CPW) fed antenna is presented. The impe... more ABSTRACT In this study, a new Compact Coplanar Waveguide (CPW) fed antenna is presented. The impedance matching and the radiation characteristics of this proposed structure is studied using method of moment techniques. The proposed antenna is based on CPW feed configuration with C shaped patch and two notches. The achievable bandwidth of the proposed antenna obtained about 400 MHz (5.02-5.42 GHz) at -10 dB return loss which corresponds to WLAN 5.2 GHz frequency band and the achievable gain is 8.5 dBi. Stable radiation characteristics are obtained across the operating band.
A novel compact stacked patch antenna with a folded patch feed is presented for Ultrawideband (UW... more A novel compact stacked patch antenna with a folded patch feed is presented for Ultrawideband (UWB) application. The bandwidth is obtained by rectangular patch stacked with H shape rectangular patch, fed with a folded patch feed and the size reduction is realized through the use of shorting wall. The new design achieves an impedance bandwidth of 111.08% across the frequency range of 3.39GHz -11.86 GHz. The antenna occupies a compact dimension of 0.432λ g by 0.381λ g by 0.229λ g (λ g is the wavelength of center operating frequency). Antenna pattern shows good performance with consistent radiation patterns, and considerable gain over entire frequency band. The design method and the parametric studies are also described.
In this paper, a novel double E-H shaped patch on a relatively thin substrate (about 0.01 0 λ ) i... more In this paper, a novel double E-H shaped patch on a relatively thin substrate (about 0.01 0 λ ) is proposed. The design adopts contemporary techniques; L-probe feeding, inverted patch structure with air-filled dielectric, and slotted patch. The composite effect of integrating these techniques and by introducing the novel patch, offer a low profile, broadband, high gain, and compact antenna element. Simulated results indicate that a 21.79% fractional impedance bandwidth is achieved with respect to the centre frequency of 2.065 GHz and the maximum achievable gain of 9.5 dBi. The proposed patch has a compact dimension of 0.544 0 λ × 0.275 0 λ (where λ 0 is the guided wavelength of the centre operating frequency). The design is suitable for array applications with respect to a given frequency of 1.84-2.29 GHz.
In this paper, a new design technique for enhancing bandwidth that improves the performance of a ... more In this paper, a new design technique for enhancing bandwidth that improves the performance of a conventional microstrip patch antenna is proposed. This paper presents a novel wideband probe fed inverted slotted microstrip patch antenna. The design adopts contemporary techniques; coaxial probe feeding, inverted patch structure and slotted patch. The composite effect of integrating these techniques and by introducing the proposed patch, offer a low profile, broadband, high gain, and low cross-polarization level. The results for the VSWR, gain and co-and cross-polarization patterns are presented. The antenna operating the band of 1.80-2.36 GHz shows an impedance bandwidth (2:1 VSWR) of 27% and a gain of 10.18 dBi with a gain variation of 1.12 dBi. Good radiation characteristics, including a cross-polarization level in xz-plane less than -42 dB, have been obtained.
Progress in Electromagnetics Research-pier, 2009
AbstractA broadband inverted EH shaped microstrip patch antenna is proposed and experimentally i... more AbstractA broadband inverted EH shaped microstrip patch antenna is proposed and experimentally investigated. The antenna employs novel EH shaped patch with L-probe feed technique. Prototype of the proposed antenna has been fabricated and measured for electromagnetic analysis ...