Abdelhak Bendali - Academia.edu (original) (raw)
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Papers by Abdelhak Bendali
2022 IEEE 3rd International Conference on Electronics, Control, Optimization and Computer Science (ICECOCS)
Journal of Circuits, Systems and Computers
This paper presents design and analysis of a beam switchable [Formula: see text] array patch ante... more This paper presents design and analysis of a beam switchable [Formula: see text] array patch antenna fed by a [Formula: see text] Butler matrix based hybrid coupler for 2.45[Formula: see text]GHz radio frequency identification (RFID) reader applications in the ISM band. The proposed beam switchable array antenna arrangement consists of two identical patch elements, a pleated quarter-wavelength impedance transformer (PQWIT), and a hybrid coupler. The concept of PQWIT has been utilized to reduce the overall implementation area of the patch elements. The overall area of the patch element is miniaturized by 50% due to the implementation of PQWIT. This miniaturized antenna is used as a radiating element for designing a beam switchable [Formula: see text] array antenna fed by a hybrid coupler. The proposed antenna prototype has been fabricated on a 1.56[Formula: see text]mm thick Rogers RT/duroid 5880 substrate with a physical area of [Formula: see text][Formula: see text]mm2. The simulat...
E3S Web of Conferences
In this paper, a printed 1×8 array antenna operating at 2.4 GHz is proposed for radio frequency i... more In this paper, a printed 1×8 array antenna operating at 2.4 GHz is proposed for radio frequency identification (RFID) Reader. The proposed array antenna is composed of eight identical modified patch elements. The radiating elements are fed in parallel via a simple 50 Ohm microstrip line matched with a quarter-wave impedance transformer using a T magic power divider to divide the input power into two equal quantities with the same phase. The suggested array configuration is designed using Rogers RT/duroid 5880 substrate having dielectric constant εr = 2.2, dielectric loss tangent = 0.0009, and substrate’s height of 1.56mm. The overall dimension of the 1×8 array antenna is 117×475mm2. The proposed array antenna shows good impedance matching, high gain and directional radiation patterns. The proposed array antenna has a high gain about of 14.61dBi, high radiation efficiency of 98.3%, and a good reflection coefficient S11 of -13.14dB and voltage standing wave ratio (VSWR) of 1.56 at 2.4...
E3S Web of Conferences
A monopole antenna with frequency diversity has been designed. Depending on the state of one PIN ... more A monopole antenna with frequency diversity has been designed. Depending on the state of one PIN diode, this antenna has the ability to alter between two frequencies. The first one is 2.45 GHz which corresponds to the WiFi applications. The second is 3.45 GHz which corresponds to the WiMAX applications. This monopole antenna has been excited by a 50Ω microstrip line. The radiating element and a partial ground plane, that was used to achieve better gain and better bandwidth, have been printed respectively at each side of an FR4 substrate having total dimensions of 30mm × 40mm × 1.6mm. The parameters related to this antenna are analyzed using the HFSS software. For the two cases of operation of the antenna, the reflection coefficient and the gain have been simulated and showed good results. Also, for the two resonance frequencies, the VSWR is strictly lower than the value 1.2.
2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2018
In this work, we present a new design of split printed H-antenna for RFID (Radio Frequency Identi... more In this work, we present a new design of split printed H-antenna for RFID (Radio Frequency Identification) applications, at 2.45 GHz. The HFSS electromagnetic simulation software is used to optimize of geometric parameters and to determine the antenna radiation characteristics. The CST electromagnetic simulation software is also used to compare and validate the results. The results show that the reflection coefficient reaches a level of −36 dB at 2.45 GHz with a narrow bandwidth of 42 MHz. A prototype of the antenna was produced and the experimental results show a good agreement with numerical results.
2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2018
In this article we present a novel structure of antenna array which consists on a set of H-shaped... more In this article we present a novel structure of antenna array which consists on a set of H-shaped patch antennas with slot and parasitic elements. The proposed antenna is suitable for RFID (Radio Frequency Identification) applications. It is dedicated to operate in the frequency band centered on the resonance frequency f0 = 2.45GHz. It is fed by a parallel linear array adapted to 50Ω. High Frequency Structural Simulator (HFSS) software is used to optimize geometric parameters and simulate the radiation characteristics of the proposed antenna array. The simulation results show that the reflection coefficient reaches a level of at least −31dB at the operating frequency of the antenna, a narrow bandwidth of the order of 26MHz, and a gain of 6.6dB.
2020 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2020
In this paper, we have studied and designed a beam former for the 5G mobile network, which operat... more In this paper, we have studied and designed a beam former for the 5G mobile network, which operates within the band [3.4-3.8 GHz]. Our main objective is to control the phase at the output of the former, while ensuring better efficiency with the most compact dimensions possible. The results, in terms of phase and amplitude, that we have obtained in the 3.6GHz frequency are satisfactory and meet the exigencies of our application.
Linear polarization reconfigurable patch antennas for 5G application are presented in this paper.... more Linear polarization reconfigurable patch antennas for 5G application are presented in this paper. The first type is U-shaped antenna which has been proposed and analyzed and can switch among two symmetric polarizations. The second type is Y-shaped antenna which has been analyzed and can switch among two orthogonal polarizations. The two types of antennas can generate the polarization diversity without affecting the other performances such as the radiation pattern and the frequency. These types of antennas are required for wireless communication systems because they can avoid the fading loss and increase the channel capacity. To achieve the linear polarization reconfigurability, two diodes are integrated into microstrip feed. For both states of operation of antennas, the resonant frequency was determined to be between (3.4–3.6) GHz. The simulated results of reflection coefficient and gain are carried out using HFSS (high frequency structural simulator) and CST (computer simulation te...
2022 IEEE 3rd International Conference on Electronics, Control, Optimization and Computer Science (ICECOCS)
Journal of Circuits, Systems and Computers
This paper presents design and analysis of a beam switchable [Formula: see text] array patch ante... more This paper presents design and analysis of a beam switchable [Formula: see text] array patch antenna fed by a [Formula: see text] Butler matrix based hybrid coupler for 2.45[Formula: see text]GHz radio frequency identification (RFID) reader applications in the ISM band. The proposed beam switchable array antenna arrangement consists of two identical patch elements, a pleated quarter-wavelength impedance transformer (PQWIT), and a hybrid coupler. The concept of PQWIT has been utilized to reduce the overall implementation area of the patch elements. The overall area of the patch element is miniaturized by 50% due to the implementation of PQWIT. This miniaturized antenna is used as a radiating element for designing a beam switchable [Formula: see text] array antenna fed by a hybrid coupler. The proposed antenna prototype has been fabricated on a 1.56[Formula: see text]mm thick Rogers RT/duroid 5880 substrate with a physical area of [Formula: see text][Formula: see text]mm2. The simulat...
E3S Web of Conferences
In this paper, a printed 1×8 array antenna operating at 2.4 GHz is proposed for radio frequency i... more In this paper, a printed 1×8 array antenna operating at 2.4 GHz is proposed for radio frequency identification (RFID) Reader. The proposed array antenna is composed of eight identical modified patch elements. The radiating elements are fed in parallel via a simple 50 Ohm microstrip line matched with a quarter-wave impedance transformer using a T magic power divider to divide the input power into two equal quantities with the same phase. The suggested array configuration is designed using Rogers RT/duroid 5880 substrate having dielectric constant εr = 2.2, dielectric loss tangent = 0.0009, and substrate’s height of 1.56mm. The overall dimension of the 1×8 array antenna is 117×475mm2. The proposed array antenna shows good impedance matching, high gain and directional radiation patterns. The proposed array antenna has a high gain about of 14.61dBi, high radiation efficiency of 98.3%, and a good reflection coefficient S11 of -13.14dB and voltage standing wave ratio (VSWR) of 1.56 at 2.4...
E3S Web of Conferences
A monopole antenna with frequency diversity has been designed. Depending on the state of one PIN ... more A monopole antenna with frequency diversity has been designed. Depending on the state of one PIN diode, this antenna has the ability to alter between two frequencies. The first one is 2.45 GHz which corresponds to the WiFi applications. The second is 3.45 GHz which corresponds to the WiMAX applications. This monopole antenna has been excited by a 50Ω microstrip line. The radiating element and a partial ground plane, that was used to achieve better gain and better bandwidth, have been printed respectively at each side of an FR4 substrate having total dimensions of 30mm × 40mm × 1.6mm. The parameters related to this antenna are analyzed using the HFSS software. For the two cases of operation of the antenna, the reflection coefficient and the gain have been simulated and showed good results. Also, for the two resonance frequencies, the VSWR is strictly lower than the value 1.2.
2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2018
In this work, we present a new design of split printed H-antenna for RFID (Radio Frequency Identi... more In this work, we present a new design of split printed H-antenna for RFID (Radio Frequency Identification) applications, at 2.45 GHz. The HFSS electromagnetic simulation software is used to optimize of geometric parameters and to determine the antenna radiation characteristics. The CST electromagnetic simulation software is also used to compare and validate the results. The results show that the reflection coefficient reaches a level of −36 dB at 2.45 GHz with a narrow bandwidth of 42 MHz. A prototype of the antenna was produced and the experimental results show a good agreement with numerical results.
2018 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2018
In this article we present a novel structure of antenna array which consists on a set of H-shaped... more In this article we present a novel structure of antenna array which consists on a set of H-shaped patch antennas with slot and parasitic elements. The proposed antenna is suitable for RFID (Radio Frequency Identification) applications. It is dedicated to operate in the frequency band centered on the resonance frequency f0 = 2.45GHz. It is fed by a parallel linear array adapted to 50Ω. High Frequency Structural Simulator (HFSS) software is used to optimize geometric parameters and simulate the radiation characteristics of the proposed antenna array. The simulation results show that the reflection coefficient reaches a level of at least −31dB at the operating frequency of the antenna, a narrow bandwidth of the order of 26MHz, and a gain of 6.6dB.
2020 International Symposium on Advanced Electrical and Communication Technologies (ISAECT), 2020
In this paper, we have studied and designed a beam former for the 5G mobile network, which operat... more In this paper, we have studied and designed a beam former for the 5G mobile network, which operates within the band [3.4-3.8 GHz]. Our main objective is to control the phase at the output of the former, while ensuring better efficiency with the most compact dimensions possible. The results, in terms of phase and amplitude, that we have obtained in the 3.6GHz frequency are satisfactory and meet the exigencies of our application.
Linear polarization reconfigurable patch antennas for 5G application are presented in this paper.... more Linear polarization reconfigurable patch antennas for 5G application are presented in this paper. The first type is U-shaped antenna which has been proposed and analyzed and can switch among two symmetric polarizations. The second type is Y-shaped antenna which has been analyzed and can switch among two orthogonal polarizations. The two types of antennas can generate the polarization diversity without affecting the other performances such as the radiation pattern and the frequency. These types of antennas are required for wireless communication systems because they can avoid the fading loss and increase the channel capacity. To achieve the linear polarization reconfigurability, two diodes are integrated into microstrip feed. For both states of operation of antennas, the resonant frequency was determined to be between (3.4–3.6) GHz. The simulated results of reflection coefficient and gain are carried out using HFSS (high frequency structural simulator) and CST (computer simulation te...