Abdelkarim S. Elhenawy

Abdelkarim S. Elhenawy

Kafrelsheikh University

H-index: 3

Africa-Egypt

About Abdelkarim S. Elhenawy

Abdelkarim S. Elhenawy, With an exceptional h-index of 3 and a recent h-index of 3 (since 2020), a distinguished researcher at Kafrelsheikh University, specializes in the field of Antenna, Leaky waves, Waveguides.

Abdelkarim S. Elhenawy Information

University

Kafrelsheikh University

Position

Demonstrator Faculty of Engineering

Citations(all)

12

Citations(since 2020)

12

Cited By

1

hIndex(all)

3

hIndex(since 2020)

3

i10Index(all)

0

i10Index(since 2020)

0

Email

University Profile Page

Kafrelsheikh University

Abdelkarim S. Elhenawy Skills & Research Interests

Antenna

Leaky waves

Waveguides

Top articles of Abdelkarim S. Elhenawy

Study on the Effect of Different Feeding Structures on the Performance of Graphene Strips Reconfigurable LWA

This paper introduces a comparative study on the effect of using different feeding structures on the radiation characteristics of graphene strips leaky wave antenna (GS-LWA) at 2 THz. The effect of different plane wave launchers on the radiation characteristics of GS-LWA is investigated. A planar substrate integrated waveguide (SIW) horn antenna is investigated. It provides a peak gain of 18.2 dBi with a bandwidth of 21.95% and a SLL of 10.6 dB. End-fire radiation from parabolic reflector is employed to launch plane-wave in the GS-LWA. A matching BW of 0.82 THz is achieved with peak gain of 18 dBi. A coplanar fed Yagi-Uda like structure element is studied using a single element and two elements array. The two elements provided the highest matching of -40 dB over BW of 6% and gain of 16.5 dBi. Finally, tapered microstrip line is investigated, it introduces the lowest SLL − 16.1 dB with a gain of 17.5 dBi and BW …

Authors

Hend Abd El-Azem Malhat,Abdelkarim S Elhenawy,Noha A Al-Shalaby,Saber H Zainud-Deen

Journal

Wireless Personal Communications

Published Date

2024/4/22

Planar reconfigurable plasma leaky-wave antenna with electronic beam-scanning for MIMO applications

A planar leaky-wave antenna (LWA) based on the reconfigurable conductivity of the plasma is designed for MIMO applications with electronic beam scanning capability. 112-semi-elliptical ionized plasma gratings are encased by plexiglass grating filled with a noble gas. These gratings are printed on a metal-backed dielectric substrate with total dimensions of . A coplanar fed printed Yagi-Uda like dipole antenna is integrated with the LWA to launch the required excitation waves. The radiated beam direction, gain, and the side lobe level are adjusted by controlling the periodicity of ionized/non-ionized plasma gratings. The antenna is compact in construction and has a high gain. A fan-shaped beam is obtained from the LWA semi-elliptical arrays with different aspect ratios. The effect of ON/OFF plasma periodicity configurations on the radiation characteristics at fixed frequency is …

Authors

Hend A Malhat,Abdelkarim S Elhenawy,Saber H Zainud-Deen,Noha A Al-Shalaby

Journal

Wireless Personal Communications

Published Date

2023/1

Electronic beam-scanning strip-coded graphene leaky-wave antenna using single structure

In this paper, a reconfigurable graphene leaky-wave antenna (GLWA) with electronic beam scanning capability for THz communications system is proposed. It consists of graphene strips printed on silicon oxide substrate and is fed by a planar H-plane horn antenna. The tunable graphene conductivity using DC-bias is used to control the GLWA-radiated beam direction without changing its physical structure. By selecting the proper periodicity of the biased/unbiased graphene strips (i.e., codes) of the GLWA, the beam direction, scanning range, gain, and SLL are changed without changing the array layout. A parametric study on the effect of GLWA dimensions on the radiation characteristics is studied. The radiated beam is electronically scanned from − 68° to 26° at a fixed frequency of 2 THz using different codes. The proposed antenna is simple in design, easy to control via the bias/unbiased periodic graphene …

Authors

Noha A Al-Shalaby,Abdelkarim S Elhenawy,Saber H Zainud-Deen,Hend A Malhat

Journal

Plasmonics

Published Date

2021/8

Reconfigurable Plasma 2D Circles Leaky Wave Antenna

This paper introduces electronic beam scanning 2D leaky-wave antenna (LWA) based on reconfigurable conductivity of the plasma. The antenna consists of a fixed number (112) of Plexiglass semi-elliptical grating filled with a noble gas printed on a grounded dielectric substrate. A coplanar fed Yagi-like dipole printed antenna is integrated with the LWA to launch a cylindrical exciting wave. By controlling the periodicity of ionized/non-ionized plasma gratings, the radiated beam direction, gain and side lobe level (SLL) can be controlled. The antenna has a compact structure of 241 × 262.5 × 2.67 mm 3 . The effect of curvature of semi-elliptical grating on the LWA operation is investigated. A fan-shaped beam is obtained from semi-elliptical grating LWA with different aspect-ratio. The semi-circular grating introduces a pencil beam with 23 dBi and bandwidth (BW) of 1.52 GHz. The effect of ON/OFF plasma periodicity and …

Authors

Abdelkarim S Elhenawy,Noha A Al-Shalaby,Saber H Zainud-Deen,Hend A Malhat

Published Date

2021/7/27

1‐D reconfigurable graphene‐strips leaky‐wave antenna with different feeders for wide scanning angles

This paper introduces electronic‐beam switching graphene‐strips leaky‐wave antenna (GS‐LWA) for THz wireless communications with different feeding structures. The antenna is constructed from graphene‐strips printed on silicon oxide substrate with total dimensions of 1350 × 300 × 35 μm3. The graphene tunable conductivity is used to control the GSLWA radiated beam direction without changing its physical structure. A scanning range of 94° (from −68° to 26°) is achieved at 2 THz using different codes. The effect of different plane wave launchers on the radiation characteristics of GS‐LWA is investigated. A planar substrate integrated waveguide horn antenna as a plane wave launcher is designed. It introduces a peak gain of 18.2 dBi with a bandwidth of 21.95% and SLL of 10.6 dB. End‐fire radiation from parabolic reflector is employed to launch plane‐wave in the GS‐LWA. A matching BW of 0.82 THz is …

Authors

Hend A Malhat,Abdelkarim S Elhenawy,Saber H Zainud‐Deen,Noha A El‐Shalaby

Journal

International Journal of RF and Microwave Computer‐Aided Engineering

Published Date

2021/4

Abdelkarim S. Elhenawy FAQs

What is Abdelkarim S. Elhenawy's h-index at Kafrelsheikh University?

The h-index of Abdelkarim S. Elhenawy has been 3 since 2020 and 3 in total.

What are Abdelkarim S. Elhenawy's top articles?

The articles with the titles of

Study on the Effect of Different Feeding Structures on the Performance of Graphene Strips Reconfigurable LWA

Planar reconfigurable plasma leaky-wave antenna with electronic beam-scanning for MIMO applications

Electronic beam-scanning strip-coded graphene leaky-wave antenna using single structure

Reconfigurable Plasma 2D Circles Leaky Wave Antenna

1‐D reconfigurable graphene‐strips leaky‐wave antenna with different feeders for wide scanning angles

are the top articles of Abdelkarim S. Elhenawy at Kafrelsheikh University.

What are Abdelkarim S. Elhenawy's research interests?

The research interests of Abdelkarim S. Elhenawy are: Antenna, Leaky waves, Waveguides

What is Abdelkarim S. Elhenawy's total number of citations?

Abdelkarim S. Elhenawy has 12 citations in total.

What are the co-authors of Abdelkarim S. Elhenawy?

The co-authors of Abdelkarim S. Elhenawy are Saber Helmy Zainud-Deen, Dr. Hend Abd El-Azem Malhat, Noha Abdelsalam.

    Co-Authors

    H-index: 25
    Saber Helmy Zainud-Deen

    Saber Helmy Zainud-Deen

    Menoufia University

    H-index: 18
    Dr. Hend Abd El-Azem Malhat

    Dr. Hend Abd El-Azem Malhat

    Menoufia University

    H-index: 5
    Noha Abdelsalam

    Noha Abdelsalam

    Kafrelsheikh University

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