Explanipedia

A Broadband LTCC‐Based Cavity‐Backed Patch Phased Array Antenna for Ka‐Band Applications Open

Mehdi Sadeghi, Mohammad S. Sharawi, Dawood Shekari Beyragh, Ammar B. Kouki, Mohamed Helaoui , et al. · 2025

This paper presents a 4 4 millimeter‐wave (mm‐wave) phased array antenna operating in the Ka‐band (27–34 GHz) fabricated using low‐temperature co‐fired ceramic (LTCC) technology. The proposed array employs several innovative design feature…

Wideband, Beamsteerable Connected Slotted-Patch Antenna Array for On-Package Millimeter Wave Applications Open

Md Rasheduzzaman Al-Amin, Elham Baladi, Mohammad S. Sharawi · 2025

Offset-enhanced slow light in femtosecond laser-fabricated Bragg gratings Open

Qingtao Chen, Jean-Sébastien Boisvert, Foroogh Jafari, Mohammad S. Sharawi, Sébastien Loranger , et al. · 2024

We report a strength-enhanced waveguide second-order line-Bragg grating (WLBG) directly written with femtosecond laser in bulk glass by using “offset” to exploit the slow-light effect. This design eschews the use of multiple waveguides and…

3-D-Printed Encapsulated Dielectric Resonator Antennas With Large Operation Frequency Ratio for Future Wireless Communications Open

Reza Shamsaee Malfajani, Reza Damansabz, Sampada Bodkhe, Daniel Therriault, Jean‐Jacques Laurin , et al. · 2024

Shared aperture antennas are versatile structures that can fulfill the demand for multi-band compact antennas in multi-standard emerging communication systems. However, the requirement of operation at widely separated frequency bands, such…

IEEE ANTENNAS AND PROPAGATION SOCIETY Open

Zhongxiang Shen, Jiang Zhu, Constantine A. Balanis, Nader Engheta, Gianluca Lazzi , et al. · 2024

Fully Embedded Dual-Element Dielectric-Based Antenna for Sub- and Terahertz Applications Open

Ehsan Rahmati, Pascal Burasa, Elham Baladi, Mohammad S. Sharawi · 2024

A completely embedded, planar, dual-element dielectric based antenna directly fed by a substrate integrated insulated guide within the same layer in Sub-THz band is presented in this paper. A dielectric layer is employed to make the struct…

Advances in High–Speed, High–Power Photodiodes: From Fundamentals to Applications Open

Qingtao Chen, Xiupu Zhang, Mohammad S. Sharawi, Raman Kashyap · 2024

High–speed, high–power photodiodes play a key role in wireless communication systems for the generation of millimeter wave (MMW) and terahertz (THz) waves based on photonics–based techniques. Uni–traveling–photodiode (UTC–PD) is an excelle…

IEEE ANTENNAS AND PROPAGATION SOCIETY Open

Zhongxiang Shen, Jiang Zhu, Constantine A. Balanis, Nader Engheta, Gianluca Lazzi , et al. · 2024

Connected Antenna Arrays With Beamsteering Capability for On-Package Millimetre-Wave Applications Open

Md Rasheduzzaman Al-Amin, Reza Shamsaee Malfajani, Elham Baladi, Mohammad S. Sharawi · 2024

In this work, on-package, beamsteerable, slot-based connected antenna arrays (CAA), namely a single slot connected antenna array (SSCAA) and a double slot connected antenna array (DSCAA), are designed, fabricated and measured for millimete…

An Integrated DRA-Based Large Frequency Ratio Antenna System Consisting of a MM-Wave Array and a MIMO Antenna for 5G Applications Open

Awab Muhammad, Muhammad U. Khan, Reza Shamsaee Malfajani, Mohammad S. Sharawi, Moath Alathbah · 2024

This paper presents a large frequency ratio antenna that covers the widely separated 5G bands. The proposed antenna consists of a 2-element rectangular DRA (rDRA)-based MIMO antenna for the sub-6 GHz band, with an embedded cylindrical DRA…

Singly-Fed Large Frequency Ratio Composite Dielectric Resonator Antenna for sub-6 GHz and mm-Wave 5G Applications Open

Asadullah, Muhammad U. Khan, Awab Muhammad, Mohammad S. Sharawi, Moath Alathbah · 2024

A dielectric resonator antenna (DRA) is proposed for dual-band resonance for the mid-band (sub-6 GHz) and the high-band (millimeter-wave) 5G applications. The proposed composite DRA consists of an annular dielectric radiator concentrically…

Bragg gratings with novel waveguide models fabricated in bulk glass via fs-laser writing and their slow-light effects Open

Qingtao Chen, Jean-Sébastien Boisvert, Mohammad S. Sharawi, Raman Kashyap · 2023

We present the experimental realization of an innovative parallel partially overlapping waveguides (PO-WGs) model grounded in the thermal accumulated regime and fabricated using femtosecond (fs) laser direct-writing within low-iron bulk gl…

Issue information Open

Wenquan Che, China South, Kai Kang, Yufei Ma, Giuseppina Monti , et al. · 2023

A multiband quasi-Yagi antenna using stepped driver

Reduced Graphene Oxide/Barium Ferrite Ceramic Nanocomposite Synergism for High EMI Wave Absorption Open

Ramy Sadek, Mohammad S. Sharawi, Charles Dubois, Hesham Tantawy, Jamal Chaouki · 2023

The developed nanocomposite exhibits significantly enhanced shielding performance due to the synergistic effect of high dielectric and magnetic loss materials, which modifies the material's impedance and improves its absorption ability. Di…

A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna Open

Mohit Mishra, Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Mohammad S. Sharawi, Ahmed A. Kishk · 2023

A sector-shaped compact π/8 partial substrate-integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity is presented. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete m…

A Highly Efficient & Low-Mutual Coupling Partial Π/8 SIW Cavity Based 8-Port MIMO Antenna Open

Mohit Mishra, Sumantra Chaudhuri, Rakhesh Singh Kshetrimayum, Mohammad S. Sharawi, Ahmed A. Kishk · 2023

A sector-shaped compact π/8 partial substrate-integrated waveguide cavity antenna from the TM220 diagonal mode of the SIW cavity is presented. A 61% size miniaturization is achieved compared to the SIW rectangular cavity in its complete m…

A Dual Wide-Band Mushroom-Shaped Dielectric Antenna for 5G Sub-6-GHz and mm-Wave Bands Open

Reza Shamsaee Malfajani, H. Niknam, Sampada Bodkhe, Daniel Therriault, Jean‐Jacques Laurin , et al. · 2023

RÉSUMÉ: The design and implementation of a dual wide-band mushroom-shaped antenna are presented in this paper. The antenna consists of a cylindrical dielectric resonator (cDRA), a cylindrical dielectric rod as a waveguide (cDR), and a diel…

A 3D-Printed Encapsulated Dual Wide-Band Dielectric Resonator Antenna With Beam Switching Capability Open

Reza Shamsaee Malfajani, H. Niknam, Sampada Bodkhe, Daniel Therriault, Jean‐Jacques Laurin , et al. · 2023

This paper presents the concept of encapsulated dielectric resonator antennas (E-DRAs). In E-DRAs, smaller-sized DRAs with a specific permittivity is embedded inside a larger DRA with a lower permittivity allowing for simultaneous efficien…

A Graded Index All-Dielectric Lens for Field Decorrelation and Decoupling of a Wideband MIMO Antenna Open

Usman Qureshi, Muhammad U. Khan, Mohammad S. Sharawi, Shah Nawaz Burokur, R. Mittra · 2023

In this paper a broadband graded index all-dielectric (GID) lens that enables field decorrelation and decoupling of closely spaced wideband multiple-input-multiple-output (MIMO) antenna elements, is presented. Reduction in correlation coef…

Multifunction Pattern Reconfigurable Slot-Antenna for 5G Sub-6 GHz Small-Cell Base-Station Applications Open

Saeed Haydhah, Ryan Gold, Zhiyong Dong, Fabien Ferrero, Léonardo Lizzi , et al. · 2023

International audience

Wideband Substrate Integrated Cavity-Backed Dielectric Resonator Antenna at Sub-6-GHz Band Open

Reza Shamsaee Malfajani, Jean‐Jacques Laurin, Mohammad S. Sharawi · 2022

The design and implementation of a wideband single-mode dielectric resonator antenna (DRA) with a substrate integrated cavity-backed structure is presented in this paper. Two short-circuited striplines with differential feeding are placed …

Diversity Order and Measure of MIMO Antennas in Single-User, Multi-User and Massive MIMO Wireless Communications Open

Rakhesh Singh Kshetrimayum, Mohit Mishra, Sonia Aı̈ssa, Shiban K. Koul, Mohammad S. Sharawi · 2022

In this paper, the diversity order (DO) and the diversity measure (DM) of multiple-input multiple-output (MIMO) antennas in generic single-user, multi-user and massive MIMO wireless communications are calculated for several practical case…

Diversity Order and Measure of MIMO Antennas in Single-User, Multi-User and Massive MIMO Wireless Communications Open

Rakhesh Singh Kshetrimayum, Mohit Mishra, Sonia Aı̈ssa, Shiban K. Koul, Mohammad S. Sharawi · 2022

In this paper, the diversity order (DO) and the diversity measure (DM) of multiple-input multiple-output (MIMO) antennas in generic single-user, multi-user and massive MIMO wireless communications are calculated for several practical case…

A single‐layer circularly polarized planar lens antenna at millimetre‐wave Open

Samaneh Sadeghi‐Marasht, Mohammad Reza Rahimi, Mohammad S. Sharawi, Anding Zhu · 2022

This paper proposes a novel single‐layer planar lens antenna with the capability of keeping circular polarization (CP) of the incoming CP wave and enhanced gain for millimetre‐wave applications. Because of the symmetric design of the lens …

A Multiband Shared Aperture MIMO Antenna for Millimeter-Wave and Sub-6GHz 5G Applications Open

Rifaqat Hussain, Mohamed A. Abou‐Khousa, Naveed Iqbal, Abdullah M. Al-Garni, Saad I. Alhuwaimel , et al. · 2022

A shared aperture 2-element multiple-input-multiple-output (MIMO) antenna design for 5G standards is presented in this study, one which uses the same radiating structure to cover both the sub-6GHz and millimeter-wave (millimeter-wave) band…

Full Lumped Element-Based Equivalent Circuit Model for Connected Slot Antenna Arrays Open

Md Rasheduzzaman Al-Amin, Chao Li, Mohammad S. Sharawi · 2022

A full lumped element-based equivalent circuit model for connected slot antenna arrays (CSAA) is proposed with three configurations of the CSAA being considered: infinite, semi-infinite, and finite slots. First, an equivalent circuit model…

Tolerated Reduction Protocol of Graphene for High Performance Emi Shielding Materials Open

Ramy Sadek, Mohammad S. Sharawi, Charles Dubois, Hesham Tantawy, Jamal Chaouki · 2022

Superior quality chemically reduced graphene oxide for high performance EMI shielding materials Open

Ramy Sadek, Mohammad S. Sharawi, Charles Dubois, Hesham Tantawy, Jamal Chaouki · 2022

The developed two-step protocol offers a superior reduced graphene oxide TCRGOL quality (7 layers), and its SET was 94 dB over the X-band.

A 5G Enabled Shared-Aperture, Dual-Band, in-Rim Antenna System for Wireless Handsets Open

Reza Shamsaee Malfajani, Farhad Bin Ashraf, Mohammad S. Sharawi · 2022

In this work, we present a shared aperture (SA), dual-band in metal-rim antenna system targeting the sub-6GHz and millimeter-wave (mm-wave) bands of the 5G wireless standard. The antenna system consists of a SA cactus-shaped slot engraved …

A Monolayer Dually Polarized High-Order Space Harmonic Leaky-Wave SIW Antennas With Fixed and Scanning Beam Capability Open

Mohammad Reza Rahimi, Mohammad S. Sharawi, Ke Wu · 2022

In this work, the concept of high-order space harmonics (HSHs) applied to a hybrid form of nonradiative dielectric (NRD) waveguide and substrate-integrated square waveguide (SIW) involving both TE10 and TE01 modes is investigated with aim …

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