Nazih Khaddaj Mallat

Nazih Khaddaj Mallat
Al Ain University

Eng., PhD.

About

60
Publications
17,986
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551
Citations
Introduction
(IEEE Member 2007 and Senior Member 2012, Member of "Ordre des Ingénieurs du Québec") received his Bachelor of Engineering degree (Electrical and Computer Engineering) from the Lebanese University in 2000, his Master degree from the "Ecole Nationale Supérieure des Télécommunications de Bretagne (ENSTB)", France, in 2002 and his Ph.D. degree in Telecommunication from University of Quebec, "Institut National de la Recherche Scientifique (INRS)", Canada, in 2010.
Additional affiliations

Publications

Publications (60)
Article
Full-text available
In this paper, a low‐size and compact substrate integrated waveguide (SIW)‐based simultaneous transmit and receive antenna is developed for full‐duplex wearable telemetry applications. The antenna operates at 4.9 GHz (Wireless Local Area Network [WLAN]) and 5.8 GHz (Industrial, Scientific and Medical [ISM]) bands with acceptable gains. Keeping a pr...
Article
Full-text available
The main purpose of this paper is to present a novel procedure for accelerating a multi-objective optimization method of designing a 5G antenna. The optimization method was chosen after comparing four learning optimization algorithms. The Kriging algorithm was found to be superior to the Artificial Neural Network (ANN), Support Vector Machine (SVM)...
Article
This brief proposes a new cyclostationary method on the basis of the Gaussian Kernel Least Mean Square (KLMS) algorithm for wideband spectrum sensing in the upcoming 5G mobile networks. To focus on a special fragment of the 5G network frequency spectrum, the KLMS algorithm uses a set of inaccurate cyclic frequencies of low complexity belonging to t...
Article
Full-text available
In this paper, a Bayesian inference-based relay selection scheme, also called Adaptive Selection on Bayesian Inference (AS-BI) for cooperative networks in 5G networks is invoked. This scheme works on the principle of Amplify-and-Forward (AF) protocol which selects the most optimal relay towards the destination. This paper proposed a probabilitybase...
Article
Full-text available
This paper presents the design of a highly-tunable single-ended and balanced filter with improved upper stopband performance. The proposed filters are designed using a spurline and a U-shaped stepped impedance resonator (SIR) with a varactor diode connected to the open-circuited end. A spurline is introduced in both designs to achieve wide stopband...
Article
Full-text available
Abstract This study presents a simple and low‐profile cylindrical dielectric resonator antenna (CDRA) for the fifth‐generation (5G) band (3.5 GHz) with switchable polarization. The antenna can operate with linear or circular polarization (right‐handed circular polarization [RHCP] or left‐handed circular polarization [LHCP]) by changing the states o...
Article
A dielectric resonator antenna (DRA) and multilayer substrate integrated waveguide (SIW) based filter-antenna subsystem is proposed in this paper. In the proposed design, the SIW structure performs the filtering functions while the DRA acts as a resonator. The proposed subsystem is able to enhance the bandwidth as well as filtering out the harmonic...
Article
This paper presents a compact quarter-mode sub-strate integrated waveguide (QMSIW) cavity backed self-diplexing tunable antenna. An open-ended slot is used to split the circular half-mode SIW (HMSIW) cavity resonator into two QMSIW cavity resonators. A varactor diode loaded stub is added with each QMSIW resonator to achieve miniaturization and reso...
Article
A compact quarter-mode substrate integrated waveguide (QMSIW) based self-quadruplexing antenna is proposed for compact RF front-ends. The QMSIW based self-quadruplexing antenna has four unequal resonators resonating at the Industrial, Scientific and Medical (ISM) band (2.45 GHz), fifth-generation (5G) band (3.5 GHz), Wireless Local Area Network (WL...
Article
This paper proposes compact and planar substrate integrated waveguide (SIW) based filters for single and triple band operations using two quarter-mode SIW (QMSIW) cavities. Two miniaturized QMSIW cavity resonators (QMSIWCRs) are capacitively coupled. Miniaturization in the QMSIWCR is achieved by adding an arc-shaped slot and a rectangular open-ende...
Article
Full-text available
In this article, a dual‐band sixth order double symmetric T‐slot filter is proposed for the 5G communication systems. This filter contains two duplicate square resonators and a T‐shape feedline on the Rogers RT duroid 5880 substrate. Operating at the 28 and 38.5 GHz frequencies from licensed 5G frequency bands and small size make this filter approp...
Article
Full-text available
A microstrip feed line-based continuous frequency-tunable dual-band multiple-input multiple-output (MIMO) antenna is proposed in this article. The proposed antenna comprises four hook-shaped radiators placed orthogonally to one another. The overall dimensions of the antenna are 45 × 45 × 1.6 mm 3 (0.77λ g × 0.77λ g × 0.027λ g [where λ g is the guid...
Article
In this paper, a reconfigurable patch antenna with Circular Polarization (CP) diversity with theoretical discussion and verification is proposed for fifth generation (5G) of mobile communication systems. The proposed antenna contains two PIN diodes, which are correctly placed on the ground plane to obtain polarization diversity. By switching betwee...
Article
Full-text available
Recently, the majority of the countries have announced deployment of the fifth-generation (5G) wireless communication in a variety of application areas. In the meanwhile, few academic institutions and industries have allocated funds to start the intense research and take on the challenge of the sixth generation (6G). Specifically, this study review...
Article
Full-text available
This paper presents a miniaturized circularly polarized multiple-input multiple-output (MIMO) antenna for wearable biotelemetric devices. The proposed MIMO antenna consists of four elements, which are placed orthogonally to the adjacent elements. The proposed antenna has a wideband response 10-dB bandwidth of 2210 MHz (fractional bandwidth (FBW) =...
Article
—A low-profile and efficient substrate integrated waveguide (SIW) based self-triplexing antenna for Worldwide InteroperabilityforMicrowaveAccess(WiMAX),fifth-generation (5G) and wireless LAN (WLAN) applications is proposed in this paper. The antenna consists of two SIW cavities, out of which one is embedded in the other. The outer SIW cavity is excite...
Article
Full-text available
A hybrid dual-band antenna, consisting of an L-shaped radiating slot and a cylindrical dielectric resonator antenna (CDRA) is proposed, simulated and experimentally validated in this paper. The microstrip transmission line excites the fundamental mode (TM10) of the slot that generates the lower frequency resonant band (2.4 GHz) and slot below the C...
Article
Full-text available
A low-profile (0.21λ g × 0.35λ g × 0.02λ g) and a simply-structured frequency-switchable antenna with eight frequency choices is presented in this paper. The radiating structure (monopole) is printed on a 1.6-mm thicker, commercially-available substrate of FR-4 (r = 4.4, tanδ = 0.020). Specifically, it uses three PIN diodes in the designated places...
Article
Full-text available
This work propose the design and measurement of tunable, highly selective and wide-stopband microwave filters using substrate integrated waveguide (SIW) technology. A two pole filter is designed using optimized cavity parameters. Two higher order (4-pole) filters are designed by connecting two cavities vertically and horizontally through coupling s...
Article
Full-text available
A millimeter-wave (mm-Wave) multiple input multiple output (MIMO) antenna operating at 24 GHz (ISM band), suitable for wearable applications, is proposed in this paper. The proposed MIMO antenna consists of two elements, designed with an edge-to-edge distance of 5.14 mm, backed by a 5×5 cell electromagnetic bandgap (EBG) structure. The antenna is f...
Article
Full-text available
The study has presented an extensive analysis of an integrated millimeter wave six-port interferometer, operating over a 10 GHz band, from 80 to 90 GHz. It has covered both semi-unlicensed point-to-point links (81-86 GHz), and imaging sensor system frequencies (above 85 GHz). An in-house process is used to fabricate miniaturized hybrid millimeter w...
Article
Full-text available
A compact, triple-band (WiMAX, WLAN and X-Band uplink satellite communication) monopole antenna is reported in this paper. The geometry of the proposed antenna consists of a pentagon-shaped patch along with symmetrical hook-shaped resonators and one vertical slot. The reported antenna works at three unique frequencies centered at 3.5 GHz, 5.4 GHz,...
Article
Full-text available
In this paper, a dual-mode dual-band filter based on half-mode substrate integrated waveguide (HMSIW) is presented. The proposed filter has the capability to tune the two pass-bands independently. The proposed filter consists of two HMSIW resonators coupled through a pair of E-shaped coupling slots. Two resonating modes (T E101 and T E102) are exci...
Article
Full-text available
A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a lumped switch that controls the operating bands of the antenna. Switch 2 and Switch 3 controls the beam switching of the antenna...
Article
Full-text available
A minimally-sized, triple-notched band ultra-wideband (UWB) antenna, useful for many applications, is designed, analyzed, and experimentally validated in this paper. A modified maple leaf-shaped main radiating element with partial ground is used in the proposed design. An E-shaped resonator, meandered slot, and U-shaped slot are implemented in the...
Article
Full-text available
A compact, cylindrical dielectric resonator antenna (CDRA), using radio frequency signals to identify different liquids is proposed in this paper. The proposed CDRA sensor is excited by a rectangular slot through a 3-mm-wide microstrip line. The rectangular slot has been used to excite the CDRA for HEM 11 mode at 5.25 GHz. Circuit model values (cap...
Article
Presents information on various MTTS Society chapters.
Article
In this paper, a novel design of a three port antenna exhibiting pattern and polarization diversity characteristics is proposed. The radiating element of the proposed antenna comprises of a ring loaded with periodical interdigital capacitors. The selective excitation of the three ports of antenna enables omnidirectional and dual-polarized broadside...
Article
The College of Engineering at Al Ain University of Science and Technology (AAU), in conjunction with the IEEE United Arab Emirates (UAE) Section, IEEE UAE Microwave Theory and Techniques Society (MTT-S)/IEEE Instrumentation and Measurement Society (IM-S) Joint Chapter, and the IEEE AAU Student Branch, organized a technical talk at the Abu Dhabi cam...
Article
Full-text available
An efficient channel estimation and interference cancelation method for a fixed point to point (p2p) microwave link is designed and investigated; it is based on Least Mean Square (LMS) and Recursive Least Square (RLS) algorithms. The LMS and RLS algorithms are compared. The objective is to minimize the computational complexity of channel estimation...
Article
Presents information on the 16th Mediterranean Microwave Symposium.
Article
Presents information on the IEEE Administrative Meeting and Technical Talk in Abu Dhabi.
Article
Presents information on the 11th IEEE UAE Student Day.
Article
On 1 June 2016, the College of Engineering at Al Ain University of Science and Technology (AAU), in conjunction with the Joint Chapter of the UAE IEEE Microwave Theory and Techniques Society and IEEE Instrumentation and Measurement Society along with the IEEE AAU student branch, organized a technical talk, "The Engineering of the Human Joint: Advan...
Article
Full-text available
This paper addresses the millimeter-wave antenna design aspect of the future 5G wireless systems. The paper reviews the objectives and requirements of millimeter-wave antennas for 5G. Recent advances in mm-wave antenna are reported and design guidelines are discussed. In particular, four different designs are identified from the recent literature b...
Conference Paper
A new uni-planar compact electromagnetic bandgap (EBG) structure is presented. The proposed EBG unit-cell is designed based on the stepped-impedance resonator (SIR) technique. Results show that the proposed EBG structure provides a wide frequency bandgap around the 60 GHz band. Moreover, results show that the proposed EBG unit-cell has further mini...
Conference Paper
Full-text available
This paper addresses the millimeter-wave antenna design aspect of the future 5G wireless systems. The paper reviews the objectives and requirements of millimeter-wave antennas for 5G. Recent advances in mm-wave antenna are reported and design guidelines are discussed. In particular, four different designs are identified from the recent literature b...
Conference Paper
Full-text available
This paper presents an insight on the recently developed antenna pattern measurement system at COMSATS Institute of Information Technology (CIIT), Islamabad, Pakistan. Microwave Components and Devices (MCAD) research group at CIIT has been involved in antenna focused research activities but unavailability of anechoic chamber to measure radiation pa...
Conference Paper
Design and analysis of millimeter-wave (MMW) mushroom-like, circular-patch electromagnetic band-gap (EBG) structure is presented. The in-phase reflection and band-gap characteristics of the proposed EBG structure are investigated. Results show that the proposed EBG structure has stable reflection properties when normally and obliquely illuminated b...
Article
The properties of dual mode resonance in planar SIW-based rectangular cavities are investigated and discussed. A specific mode combination of dual mode cavity presents a unique frequency response feature. With the aid of an optimization process or software, it is convenient to cascade a number of cavities with coupling apertures to form a filter. A...
Article
Full-text available
A cognitive detect and avoid radar system based on chaotic UWB-MIMO waveform design to enable autonomous UAV navigation is presented. A Dirichlet-Process-Mixture-Model (DPMM) based Bayesian clustering approach to discriminate extended targets and a Change-Point (CP) detection algorithm are applied for the autonomous tracking and identification of p...
Article
Discusses new developments in the field of Terahertz technology.
Article
Direct-coupled cavity bandpass filters with Chebyshev response are studied and realized, using the technique of planar substrate-integrated waveguide (SIW) for the purpose of high-density integration and cost reduction. Using a general mode-matching technique, the scattering matrix of waveguide bifurcation-type discontinuity and asymmetric iris are...
Article
The physical mechanism of quasi-TEM (transverse electromagnetic) waveguides with frequency selective surface (FSS) walls is established on the basis of an equivalent magnetic current technique in this paper. The equivalent magnetic current distributions in the slots of dielectric surfaces with dipole-FSS walls and dielectric surface of bare-slab, a...
Article
Electrical properties and geometrical characteristics of frequency-selective-surface-loaded quasi-transverse electromagnetic (TEM) rectangular waveguides are investigated in detail. The properties of electrical field distributions over the cross section of waveguides at various periodical phase shift points are studied. The phenomena, in connection...
Conference Paper
This paper presents a new architecture of ultra-high data rate millimeter-wave transceiver based on six-port technology that is demonstrated for operating over the V-band frequency from 60 GHz to 64 GHz. Since the unlicensed bandwidth allocated in this frequency band is extremely large (around 7 GHz) in the North America, the frequency-division-mul...
Article
This paper presents a new low-cost millimeter-wave ultra-wideband (UWB) transceiver architecture operating over V-band from 60 to 64 GHz. Since the local oscillator (LO) power required in the operation of six-port receiver is generally low (compared to conventional one using diode mixers), the carrier recovery or LO synchronization is avoided by us...
Article
Full-text available
A direct 61 GHz demodulator, based on a rectangular waveguide (WR-12) six-port, is presented in this letter. The six-port device, composed of four 90° hybrid couplers fabricated in a metal block of brass, is implemented in ADS software. Good agreement between QPSK demodulation results using an ideal six-port model and a second one, based on the S-p...
Article
A new millimeter-wave multi-port receiver is analyzed in this paper. Frequency division multiplexing scheme based on four QPSK modulated sub-channels is used to reach 2 Gb/s data-rate. This implementation is validated using advanced system simulations of a short-range 60 GHz wireless link. The receiver model is built using a millimeter-wave multi-p...
Conference Paper
A carrier recovery loop process, for a millimeter-wave heterodyne receiver, is proposed in this paper. The millimeter-wave frequency conversion is performed using a six-port module, avoiding the conventional millimeter-wave active costly mixers. The second frequency conversion is performed using conventional circuits. The carrier recovery is done a...
Article
Two 60GHz homodyne receivers dedicated for high-speed short-range communication systems are presented. The receivers are based on six-port and conventional (anti-parallel diodes) mixers, respectively. Comparative bit error rate results, function of local oscillator power, phase, and frequency shift over the operating bandwidth, are presented and di...
Conference Paper
A six-port V-band heterodyne receiver architecture is proposed in this paper. The millimeter-wave frequency conversion is performed using a passive circuit module, the six-port, avoiding the conventional millimeter-wave active costly mixers. Basically, the six-port circuit is an additive mixer in which the resulting sum of millimeter-wave signals i...
Conference Paper
This paper presents comparative down-conversion results using two different topologies. The conventional approach using anti-parallel diodes acting as LO-driven switches is compared with the six-port one. The proposed down-converter which provides an intermediate frequency of 900 MHz uses a six-port circuit and two pairs of parallel Schottky diodes...

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