A5032796140- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Energy Harvesting in Wireless Networks
- Antenna Design and Optimization
- RFID technology advancements
- Millimeter-Wave Propagation and Modeling
- Wireless Body Area Networks
- Wireless Power Transfer Systems
- Advanced MIMO Systems Optimization
- Metamaterials and Metasurfaces Applications
- Radio Frequency Integrated Circuit Design
- Ultra-Wideband Communications Technology
- Precipitation Measurement and Analysis
- Radio Wave Propagation Studies
- Telecommunications and Broadcasting Technologies
- Bluetooth and Wireless Communication Technologies
- Power Line Communications and Noise
- Indoor and Outdoor Localization Technologies
- Full-Duplex Wireless Communications
- Advanced Sensor and Energy Harvesting Materials
- Advanced Wireless Communication Technologies
- Innovative Energy Harvesting Technologies
- IoT Networks and Protocols
- Semiconductor Lasers and Optical Devices
University of Technology Malaysia
2016-2025
Universiti Tunku Abdul Rahman
2021-2023
Multimedia University
2023
Al-Turath University
2023
Alsalam University College
2022
ORCID
2021
Universiti Malaysia Perlis
2018-2020
Universiti Teknologi MARA
2019
Bayero University Kano
2017
Shanghai Research Center for Wireless Communications
2011-2016
This study presents an innovative and compact monopole antenna with dual-band frequency reconfigurability for LoRa applications. It operates within the 915 MHz 868 frequencies, aligning designated bands use in America, Asia Europe. No existing reconfigurable these features applications ISM below 1 GHz is known. Employing economical FR-4 substrate its design, attains a size of 40 × 42 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup>...
Wireless energy harvesting (EH) is a promising solution to prolong lifetime of power-constrained networks such as military and sensor networks. The high sensitivity transfer signal decay due path loss fading, promotes multi-antenna techniques like beamforming the candidate transmission scheme for EH Exploiting in has gained overwhelming interest, lot literature appeared recently regarding this topic. objective paper point out state-of-the-art research activity on implementation wireless We...
Distributed and collaborative beamforming (DCBF) scheme in wireless sensor networks (WSNs) is receiving newfound interest recent times due to the rapid advancements technology embedded systems. Although studies on distributed have been carried out for more than ten years, DCBF was initially considered impractical high complexity hardly achievable requirements. It gained prominence only past few years as small communication electronic sensors with processing capability became easily...
Peripartum administration of single-dose nevirapine reduces mother-to-child transmission human immunodeficiency virus type 1 (HIV-1) but selects for nevirapine-resistant virus.In seven African countries, women infected with HIV-1 whose CD4+ T-cell counts were below 200 per cubic millimeter and who either had or not taken at least 6 months before enrollment randomly assigned to receive antiretroviral therapy tenofovir–emtricitabine plus tenofovir-emtricitabine lopinavir boosted by a low dose...
A flexible and transparent ultrawideband (UWB) antenna that uses a conductive fabric tissue on polydimethylsiloxane (PDMS) substrate is presented in this letter. The integrated onto the PDMS having thickness of 2 mm to produce an efficient UWB antenna. To achieve this, first, sheet was attached upper lower surface layer panel with three layers. Then, radiating elements were formulated precisely layers, using laser machine. measured transparency can attain value more than 70% 90%,...
A planar, low-profile, dual-band and dual-polarized antenna on a semi-flex substrate is proposed in this paper. The fabricated Rogers with thickness of 3.04 mm sized at <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$70.4 \times 76.14 3.11$ </tex-math></inline-formula> <sup xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> ( notation="LaTeX">$0.37\lambda _{0} 0.40\lambda _{0}\times 0.016 \lambda _{0}$ )...
A novel coplanar waveguide-fed transparent antenna for ultrawideband applications with enhanced bandwidth is presented. In this design, different techniques have been used to broaden the bandwidth. The rectangular radiator of equipped by staircase technique increase overlapped resonant frequencies. Moreover, two major and minor symmetrical stubs are mounted on top quarter-circle slot ground using a dual axis significantly between 3.15 32 GHz VSWR <; 2. AghT-8 thin film in design proposed...
In this paper, a novel communication scheme that combines beamforming, energy harvesting, and cooperative non-orthogonal multiple access (NOMA) system is introduced. the proposed scheme, NOMA first combined with beamforming to serve more than one user in each vector. Later, simultaneous wireless information power transfer (SWIPT) technique exploited encourage strong relay weak user's messages full-duplex (FD) manner. However, major drawback of FD communications self-interference (SI) signal...
The market volatility in the oil and gas (O&G) sector, dwindling demand for due to impact of COVID-19, push alternative greener energy are driving need innovation digitization O&G industry. This has attracted research interest from academia industry application 4.0 (I4.0) technologies sector. some these I4.0 been presented literature, but domain still lacks a comprehensive survey upstream paper investigates state-of-the-art efforts directed toward To achieve this, first, an overview is...
Computerized brain tumor classification from the reconstructed microwave (RMB) images is important for examination and observation of development disease. In this paper, an eight-layered lightweight classifier model called image network (MBINet) using a self-organized operational neural (Self-ONN) proposed to classify into six classes. Initially, experimental antenna sensor-based imaging (SMBI) system was implemented, RMB were collected create dataset. It consists total 1320 images: 300...
This article proposes a square split-ring resonator (SSRR) metamaterial absorber (MMA) for sub-6 GHz application. The unit cell of the MMA was designed and fabricated on commercially available low-cost FR-4 substrate material with dielectric constant o 4.3. higher effective medium ratio (EMR) shows compactness MMA. dimension is 9.5 × 1.6 mm3, which consists two split rings arms outer SSRR. proposed operates at 2.5 GHz, 4.9 6 frequency bands 90% absorption peak single negative property....
A dual-band coplanar-waveguide (CPW)-fed transparent antenna for active radio-frequency identification (RFID) tags working at 2.45 GHz and 5.8 is proposed. AgHT-8 thin film, includes the silver-coated polyester as conductive layer, polyethylene terephthalate substrate, used to design fabricate with high transparency of above 80%, which sufficient provide ability laminate surface tag devices little chance detection. The overall dimension size proposed 36 ×39 ×0.175 mm <sup...
A flexible and low profile frequency selective surface (FSS) with bandstop behavior for X-band signals is demonstrated in this paper to support the demand of wireless communication devices today's market. The resonating element FSS realized using convoluted ring loop that inspired by conventional element. An additional four stubs are added at each 90° miniaturize its overall dimension. has reduced dimension shape 0.25 λ0 a reduction 33%. proposed developing utilizing polyethylene...
Collaborative beamforming is usually characterized by high, asymmetrical sidelobe levels due to the randomness of node locations. Previous works have shown that optimization methods aiming reduce peak level (PSL) alone do not guarantee overall reduction beampattern, especially when nodes are random and cannot be manipulated. Hence, this paper proposes a multiobjective amplitude phase technique with two objective functions: PSL minimization directivity maximization, in order improve...
A novel compact dual band-notched dielectric resonator antenna (DRA) for ultrawideband (UWB) applications is proposed. Here, the bandwidth enhancement and first band notch realized by embedding a stub that located to hollow center of U-shaped feedline simultaneously. By etching an inverted T-shaped parasitic strip at back plane surrounded (DR), second rejection created. cutting slot proper position on ground plane, width controlled. The proposed size 12 ×30 ×6 mm <sup...
Abstract A modified microstrip patch antenna is implemented on Polyethylene terephthalate (PET) substrate with a thickness of 0.125 mm for 5G applications. The wideband 60 ×75 2 total dimensions fabricated using novel inkjet printer and silver nano‐particles as the conductive ink. designed operates within 7 to 13 GHz exhibits almost omnidirectional radiation pattern an average gain 5 dBi. flexible was also tested under bending conditions showed good performance X‐band region. originality...
An experimental study on the effect of weather conditions such as solar radiation, humidity, temperature, and rain Long Range (LoRa) communication in a tropical region (Malaysia) via campus environment has been carried out analyzed. The parameters were obtained from an online meteorological station (Meteoblue) use local automatic station. A temperature sensor was attached to LoRa node measure onboard temperature. We analyze diurnal variation effects condition based link LoRaWAN setup....
The millimeter-wave (mmWave) is expected to deliver a huge bandwidth address the future demands for higher data rate transmissions. However, one of major challenges in mmWave band increase signal loss as operating frequency increases. This has attracted several research interests both from academia and industry indoor outdoor operations. paper focuses on works that have been carried out study channel measurement environments. A survey techniques, prominent path models, analysis delay spread...
In this study, a novel reconfigurable triple-band monopole antenna for LoRa IoT applications is fabricated on an FR-4 substrate. The proposed designed to function at three distinct frequency bands: 433 MHz, 868 and 915 MHz covering the bands in Europe, America, Asia. by using PIN diode switching mechanism, which allows selection of desired operating band based state diodes. CST MWS
A new compact two-segments dielectric resonator antenna (TSDR) for ultrawideband (UWB) application is presented and studied. The design consists of a thin monopole printed loaded with two resonators different constant. By applying combination U-shaped feedline modified TSDR, proper radiation characteristics are achieved. proposed provides an ultrawide impedance bandwidth, high efficiency, overall size 18 × 36 11 mm . From the measurement results, it found that realized good bandwidth about...
A compact frequency-reconfigurable dielectric resonator antenna (DRA) for LTE/WWAN and WLAN applications is investigated presented. The proposed provides the frequency tuning between 1.60 2.71 GHz. design consists of four identical rectangular resonators with permittivity 10 each three p-i-n diode switches that are located on feedline network two resonators. size 20 ×36 ×5.57 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sup> , which...
The electromagnetic behavior of the coplanar waveguide (CPW)-fed loaded complementary split-ring resonator (CSRR) to ultrawideband (UWB) transparent antenna is presented in this letter. material known as conductive silver-coated thin films (AgHT-4) one unique materials that now being implemented designs. This has very advantages thickness and high transparency. However, it exhibits different properties compared conventional Fire Retardant-4 (FR-4) due its surface resistivity conductivity....