Thennarasan Sabapathy
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View article: A Triband Wearable Antenna for Location Tracking Using Cospas-Sarsat and GNSS
A Triband Wearable Antenna for Location Tracking Using Cospas-Sarsat and GNSS Open
This paper presents the design of a tri-band antenna operating in the Cospas-Sarsat (C-S) and GPS/GNSS bands applicable for the Internet of Things (IoT). Implemented with flexible and robust materials, the antenna operates in three distinc…
View article: Review of Positioning Technologies and Antenna Designs for Indoor, Outdoor, and Wearable Applications
Review of Positioning Technologies and Antenna Designs for Indoor, Outdoor, and Wearable Applications Open
This paper presents a systematic review of positioning technologies and antenna designs for indoor and outdoor applications. The indoor positioning analysis focuses on RF-based systems including Bluetooth Low Energy (BLE), ultra-wideband (…
View article: A Compact Wideband SRR-based C-Shaped Antenna for 5G New Radio Band n258
A Compact Wideband SRR-based C-Shaped Antenna for 5G New Radio Band n258 Open
This paper proposes a compact wideband split ring resonator (SRR) based C-shaped antenna for 5G new radio (NR) band n258 millimeter wave (mm-Wave). The proposed antenna covers a wideband frequency range from 24.1 GHz to 28.3 GHz with a ref…
View article: A Patch Antenna with Enhanced Gain and Bandwidth for Sub-6 GHz and Sub-7 GHz 5G Wireless Applications
A Patch Antenna with Enhanced Gain and Bandwidth for Sub-6 GHz and Sub-7 GHz 5G Wireless Applications Open
This paper presents a novel microstrip patch antenna design using slots and parasitic strips to operate at the n77 (3.3–4.2 GHz)/n78 (3.3–3.8 GHz) band of sub-6 GHz and n96 (5.9–7.1 GHz) band of sub-7 GHz under 5G New Radio. The proposed a…
View article: Low-Profile and Wider-Angle Beam Tilting Parasitic Array Resonator Antenna with Optimized Deflected Ground Plane on FR-4 Substrate
Low-Profile and Wider-Angle Beam Tilting Parasitic Array Resonator Antenna with Optimized Deflected Ground Plane on FR-4 Substrate Open
A low-profile and wide-angle radiation pattern reconfigurable antenna is designed, analyzed, and fabricated for wireless sensor network (WSN) applications, which operate at a 2.5-GHz frequency. This work aims to minimize the number of swit…
View article: Higher Order OAM Mode Generation Using Wearable Antenna for 5G NR Bands
Higher Order OAM Mode Generation Using Wearable Antenna for 5G NR Bands Open
This paper presents a flexible and wearable textile array antenna designed to generate Orbital Angular Momentum (OAM) waves with Mode +2 at 3.5 GHz (3.4 to 3.6 GHz) of the sub-6 GHz fifth-generation (5G) New Radio (NR) band. The proposed a…
View article: Multi-Mode Yagi Uda Patch Array Antenna With Non-Linear Inter-Parasitic Element Spacing
Multi-Mode Yagi Uda Patch Array Antenna With Non-Linear Inter-Parasitic Element Spacing Open
A low-profile and broad steerable patch array antenna is presented. The improvement of the multi-directional functions from the broadside is very limited for the patch array antenna. In this work, the number of directional beams is enhance…
View article: Combined RIS and EBG Surfaces Inspired Meta-Wearable Textile MIMO Antenna Using Viscose-Wool Felt
Combined RIS and EBG Surfaces Inspired Meta-Wearable Textile MIMO Antenna Using Viscose-Wool Felt Open
In this paper, we present a textile multiple-input–multiple-output (MIMO) antenna designed with a metamaterial inspired reactive impedance surface (RIS) and electromagnetic bandgap (EBG) using viscose-wool felt. Rectangular RIS was used as…
View article: Analysis of Symmetric Two and Four-coil Magnetic Resonant Coupling Wireless Power Transfer
Analysis of Symmetric Two and Four-coil Magnetic Resonant Coupling Wireless Power Transfer Open
This study examined the efficiency of power transfer for two-coil and four-coil spiral magnetic resonant coupling wireless power transfer (WPT) using distance to coil diameter (D/dm) ratio and reflection coefficient, S21 value. Adding reso…
View article: Negative Index Metamaterial-Based Frequency-Reconfigurable Textile CPW Antenna for Microwave Imaging of Breast Cancer
Negative Index Metamaterial-Based Frequency-Reconfigurable Textile CPW Antenna for Microwave Imaging of Breast Cancer Open
In this paper, we report the design and development of a metamaterial (MTM)-based directional coplanar waveguide (CPW)-fed reconfigurable textile antenna using radiofrequency (RF) varactor diodes for microwave breast imaging. Both simulati…
View article: Compact Multiband Reconfigurable MIMO Antenna for Sub- 6GHz 5G Mobile Terminal
Compact Multiband Reconfigurable MIMO Antenna for Sub- 6GHz 5G Mobile Terminal Open
In this paper, the design of a multiband multiple-input multiple-output (MIMO) antenna with frequency and radiation pattern reconfiguration capability in the 5G sub-6 GHz band is presented. Frequency and radiation pattern reconfiguration a…
View article: A Novel Unsupervised Spectral Clustering for Pure-Tone Audiograms towards Hearing Aid Filter Bank Design and Initial Configurations
A Novel Unsupervised Spectral Clustering for Pure-Tone Audiograms towards Hearing Aid Filter Bank Design and Initial Configurations Open
The current practice of adjusting hearing aids (HA) is tiring and time-consuming for both patients and audiologists. Of hearing-impaired people, 40–50% are not satisfied with their HAs. In addition, good designs of HAs are often avoided si…
View article: Reconfigurable Pattern Patch Antenna for Mid-Band 5G: A Review
Reconfigurable Pattern Patch Antenna for Mid-Band 5G: A Review Open
New requirements in communication technologies make it imperative to rehash conventional features such as reconfigurable antennas to adapt with the future adaptability advancements. This paper presents a comprehensive review of reconfigura…
View article: A Negative Index Nonagonal CSRR Metamaterial-Based Compact Flexible Planar Monopole Antenna for Ultrawideband Applications Using Viscose-Wool Felt
A Negative Index Nonagonal CSRR Metamaterial-Based Compact Flexible Planar Monopole Antenna for Ultrawideband Applications Using Viscose-Wool Felt Open
In this paper, a compact textile ultrawideband (UWB) planar monopole antenna loaded with a metamaterial unit cell array (MTMUCA) structure with epsilon-negative (ENG) and near-zero refractive index (NZRI) properties is proposed. The propos…
View article: Broadband Sub-6GHz Slot-based MIMO Antenna for 5G NR Bands Mobile Applications
Broadband Sub-6GHz Slot-based MIMO Antenna for 5G NR Bands Mobile Applications Open
A slot-based broadband single and MIMO antennas for 5G New Radio (5G NR) mobile applications are presented in this paper. The proposed MIMO antenna is investigated by loading two antennas into a low-cost material with the partial ground fo…
View article: A Compact Wideband CSRR Near Zero Refractive Index and Epsilon Negative Metamaterial for Wearable Microwave Applications
A Compact Wideband CSRR Near Zero Refractive Index and Epsilon Negative Metamaterial for Wearable Microwave Applications Open
A complementary split-ring resonator (CSRR) decagonal shaped textile-based single-negative metamaterial (MTM), considering a frequency range from 1 to 15 GHz, is presented in this paper. Seven different unit cell arrays (i.e., 1×1, 1×2, 1×…
View article: Investigation on The Mutual Coupling Reduction in MIMO Antenna using Dual Split CSRR EBG
Investigation on The Mutual Coupling Reduction in MIMO Antenna using Dual Split CSRR EBG Open
In many applications, it is now desirable to prevent a device from being affected by an external electromagnetic field or prevent the device’s intrusion into the electromagnetic field. The elimination or reduction of coupling between neigh…
View article: Design of Reconfigurable Antenna for RFID System
Design of Reconfigurable Antenna for RFID System Open
This paper proposes a reconfigurable antenna for RFID system which can operate between 860MHz to 960MHz frequency that belongs to ultra-high frequency (UHF) band used in Malaysia with the center frequency of 910MHz. One rectangular slot an…
View article: Mobile Green E-Waste Management Systems using IoT for Smart Campus
Mobile Green E-Waste Management Systems using IoT for Smart Campus Open
This paper presents the design and development of mobile “green” electronic waste (e-waste) management systems using Internet of Things (IoT) for smart campus. The system uses Raspberry Pi 3 Model B v1.2 microcontroller for monitoring e-wa…
View article: Correction: Multi-stage feature selection (MSFS) algorithm for UWB-based early breast cancer size prediction
Correction: Multi-stage feature selection (MSFS) algorithm for UWB-based early breast cancer size prediction Open
[This corrects the article DOI: 10.1371/journal.pone.0229367.].
View article: Smart Gateless System using RFID Technology in Universiti Malaysia Perlis
Smart Gateless System using RFID Technology in Universiti Malaysia Perlis Open
This paper describes a smart monitoring gate-less system by using RFID technologies that had been implemented in Universiti Malaysia Perlis. The objective of this system is to ease the security to monitoring the cars-in and cars-out from t…
View article: Electrically Tunable Left-Handed Textile Metamaterial for Microwave Applications
Electrically Tunable Left-Handed Textile Metamaterial for Microwave Applications Open
An electrically tunable, textile-based metamaterial (MTM) is presented in this work. The proposed MTM unit cell consists of a decagonal-shaped split-ring resonator and a slotted ground plane integrated with RF varactor diodes. The characte…
View article: Narrowband to Narrowband Frequency Tunable Slotted Dipole Antenna
Narrowband to Narrowband Frequency Tunable Slotted Dipole Antenna Open
In this paper, the slotted dipole antenna structure is proposed to have four narrowband frequencies with ability to be reconfigured. Narrowband reconfiguration can be achieved by controlling the length of slotted dipole by using switches. …
View article: Reliable Early Breast Cancer Detection using Artificial Neural Network for Small Data Set
Reliable Early Breast Cancer Detection using Artificial Neural Network for Small Data Set Open
This paper proposes a breast cancer detection module using Artificial Neural Network for small data set. The developed system consists of hardware and software. Hardware included UWB transceiver and a pair of home- made directional sensor/…
View article: A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications
A Hybrid Mutual Coupling Reduction Technique in a Dual-Band MIMO Textile Antenna for WBAN and 5G Applications Open
This paper presents a hybrid mutual coupling reduction technique applied onto a dual-band textile MIMO antenna for wireless body area network and 5G applications. The MIMO antenna consists of two hexagonal patch antennas, each integrated w…
View article: A Patternless Piezoelectric Energy Harvester for Ultra Low Frequency Applications
A Patternless Piezoelectric Energy Harvester for Ultra Low Frequency Applications Open
This paper presents a pattern less piezoelectric harvester for ultra low power energy applications. Usually patterned cantilevers are used as vibration energy harvester which results additional fabrication process. Hence, to reduce the pro…
View article: A Hybrid Modified Method of the Sine Cosine Algorithm Using Latin Hypercube Sampling with the Cuckoo Search Algorithm for Optimization Problems
A Hybrid Modified Method of the Sine Cosine Algorithm Using Latin Hypercube Sampling with the Cuckoo Search Algorithm for Optimization Problems Open
The metaheuristic algorithm is a popular research area for solving various optimization problems. In this study, we proposed two approaches based on the Sine Cosine Algorithm (SCA), namely, modification and hybridization. First, we attempt…
View article: Drunken drive detection with smart ignition lock
Drunken drive detection with smart ignition lock Open
Drink and drive issue have become solemnly that needs immediate attention. This is due to drivers’ ignorance towards road rules and regulations and their selfish attitude that caused loss of innocent lives. Although previously there is a d…
View article: BCWSP 2020 TOC
BCWSP 2020 TOC Open
View article: Artificial Magnetic Conductor to Enhance Microstrip Patch Textile Antenna Performance for WiMAX Application
Artificial Magnetic Conductor to Enhance Microstrip Patch Textile Antenna Performance for WiMAX Application Open
A rectangular microstrip patch textile antenna with Artificial Magnetic Conductor (AMC) operated at the center frequency of 5.80 gigahertz (GHz) for Worldwide Interoperability for Microwave Access (WiMAX) application was designed and simul…