Sudipta Das

IMPS college of Engineering and Technology · Electronics & Communication Engineering

The main purpose of this letter is to develop a miniaturized ultra‐wideband hybrid coupler with an adjustable phase shift (90°‐180° and vice versa) that operates around the resonant frequency of 3.8 GHz with a fractional bandwidth of 26% required for 5G applications. The design approach is based on a microstrip waveguide technique with localized lu...

In this paper, a compact micro-sized rhombus-shaped wideband THz antenna is proposed. The radiating patch has been modified by incorporating a rhombus-shaped gold metal-based element within the inscribed square-shaped slot on the surface of the patch. The proposed monopole antenna is designed on a 45-μm-thick polyimide substrate material having a d...

A low cost dual band offset fed monopole microstrip antenna is proposed in this paper. The suggested antenna is designed using an inexpensive 1.6 mm thick fr-4 substrate of relative permittivity 4.4. The design and analysis of the proposed antenna model have been performed using HFSS software. By inserting a square slot loaded with an inverted meta...

This book highlights the growing applications of THz technology and various modules used for their successful realization. The enormous advantages of THz devices like higher resolution, spatial directivity, high-speed communication, greater bandwidth, non-ionizing signal nature and compactness make them useful in various applications like communica...

Design of an integrated ultra wide-band and narrow-band three-antenna structure for cognitive radio communication in 5G, WLAN, LTE and ITU bands is reported. This structure constitutes of an ultra wide-band antenna to monitor the radio spectrum and two narrow-band antennas performing communication. The UWB and narrow-band antennas are stamped on an...

A staircase-shaped printed monopole antenna (SPMA) with a partial ground structure for wireless applications is proposed. The performance parameters of the designed antenna have been evaluated by integrating a novel structure of frequency selective surface (FSS) with the antenna. A Polyimide dielectric material has been utilized for designing both...

Advances in recent communication systems require minimal weight, low cost, high performance and low-profile antenna to meet the demand for next generation wireless communication devices. Due to the saturation velocity, high electrical conductivity and high mobility, graphene patch antennas are preferably used in the Terahertz band region (THz). On...

Editors: 1. Dr. MOHAMMED EL GHZAOUI, Sidi Mohammed ben Abdellah University, Faculty of Sciences, Fes, Morocco 2. Dr. SUDIPTA DAS, Department of Electronics & Communication Engineering, IMPS College of Engineering & Technology, Malda, West Bengal, India 3. Dr. VARAKUMARI SAMUDRALA, Department of Electronics and Communication Engineering, NRI Institu...

Dear Author!!! We are delighted to invite your original research works for the book entitled “Next Generation Wireless Communication: Advances in Optical, mm-Wave, and THz Technologies” as chapter publication on the listed topics but not limited to. Prospective contributors are invited to submit chapter proposal along with an abstract of 200-300...

A compact microstrip antenna for terahertz applications is proposed and its characteristic parameters are analyzed by utilizing several conducting and dielectric materials. The proposed terahertz antenna consists of a modified E-shaped patch and slot loaded T-shaped ground plane. The proposed THz antenna structure is designed on a 45µm thick Rog...

This paper describes a four-port MIMO antenna array design featuring bow-tie-shaped slot-loaded patches with wideband capabilities that cover the frequency range from 24.2[Formula: see text]GHz to 30.8[Formula: see text]GHz. The proposed antenna design is printed on an FR4 substrate and occupies an area of 25[Formula: see text]×[Formula: see text]2...

Flexible RF electronics and antennas made from textiles are regarded as a technology that accelerates the widespread popularity of modern wearable communication devices and components. This work presents a flexible and compact 4 × 1 rectangular microstrip patch array antenna for radio frequency (RF) energy harvesting applications. It operates at 5...

This article deals with the design and analysis of a microstrip 1  8 magic-T power divider (MTPD) for ISM band (industrial and medical band) array antenna application. First, a basic 1  2 magic-T power divider is designed and optimized. It can divide the power supply in two equal parts (3 dB) in-phase agreement. Then a 1  4 power divider has bee...

This work evaluates the performance of a triple-frequency operating circularly polarized wearable jute textile antenna in a human body sweat environment. The propounded antenna is designed to operate on the human body. So, contact with human skin allows the antenna to absorb the eccrine gland-rich mineral secretion (sweat) in regular use. The absor...

In this article, a compact dual-band metamaterial absorber (MMA) is suggested for the purpose of solid materials sensing in the C-and Ku-wireless bands. The proposed MMA is formed by a basic cell based on a novel shape of the folded arms square split ring reso-nator (FAS-SRR).The size of the cell forming the absorber is optimized for an electrical...

There are growing advantages to the use of graphene-based nanophotonics in communication, sensing, security, safety, spectroscopy, manufacturing, biomedicine, agriculture, imaging, and other fields. These advantages, as well as the numerous challenges associated with this technology and proposed solutions to these challenges, are summarized in this...

This research article proposed a co-axial feeding technique fractal shape radiator designed for THz regime. The designed radiator has compact structure of 565 × 400 µm with co-axial feeding of 220 µm. The structure is resonating at 3.6 THz for the area of application regions like high-security devices, biologic information extraction, environmental...

High-tech electromagnetic antennas that can receive and transmit at micro- and millimeter wave frequencies are crucial in the modern era of information. Multimedia broadcasting, wireless and satellite communications, radars, environmental sensing, and even medical equipment use them. Raising the working frequency of existing antennas using the tera...

This paper demonstrates the basic circular patch and monopole ground plane with graphene patch underneath the substrate. The designed radiator performance has been evaluated in terms of chemical potentials, S-parameters, E-field, H-field and VSWR. In this design, using the substrate of polyimide with lower dielectric constant 3.5 and the thickness...

This paper describes a simple methodology to obtain an Ultra-Wide Band characteristic with dual polarization and high radiation performance of a miniaturized compact array antenna for Multi-Mission C band Radars applications. The proposed array antenna is composed of a principal T-junction power divider and 32 circular radiating elements. It is man...

In this work, a novel multiple input multiple output (MIMO) array antenna system with a large bandwidth and high gain has been simulated, analyzed, fabricated, and measured. The proposed antenna is structured in [Formula: see text] patch configuration along with a cross shaped ground plane loaded with four square and one circular shaped defect. The...

This work presents the design and analysis of a super wideband nano-scaled optical antenna for terahertz (THz) wireless communication applications in the visible light spectrum (380 nm to 700 nm). The proposed antenna is designed on a 50 nm thick GaAs substrate with a dielectric constant of 12.94. The radiating patch of the suggested antenna is con...

In this research article, we proposed a split ring resonator(SRR) based metasurface absorber based on graphene material. The performance of the graphene-based absorber at terahertz frequencies can be altered by varying the chemical potential of graphene material. Because of its excellent tunability and optical responsiveness at terahertz frequency,...

In this article, a 4 × 4 miniaturized UWB-MIMO antenna with reduced isolation is designed and analyzed using a unique methodology known as characteristic mode analysis. To minimize the antenna’s physical size and to improve the isolation, an arrangement of four symmetrical radiating elements is positioned orthogonally. The antenna dimension is 40 m...

The main objective of this research work is to present a new study on the design of a microstrip antenna array using a new technique based on integration of the circular split ring resonator (SRR) for the purpose of gain and bandwidth enhancement in order to use it for WLAN and Wi-Fi communication applications at 5.8 GHz. The simple antenna array r...

This paper focuses on the evolution of cellular networks as part of their adaptation to the IoT, allowing their new belonging to the category of LPWAN networks. We will be more particularly interested in coverage extension mechanisms. The transmission chain used in this work based on GMSK scheme with maximum likelihood criterion for phase detection...

Wearable devices with 5G technology are currently more ingrained in our daily lives, and they will now be a part of our bodies too. The requirement for personal health monitoring and preventive disease is increasing due to the predictable dramatic increase in the number of aging people. Technologies with 5G in wearables and healthcare can intensely...

The present research work represents the numerical study of the device performance of a lead-free Cs2TiI6−XBrX-based mixed halide perovskite solar cell (PSC), where x = 1 to 5. The open circuit voltage (VOC) and short circuit current (JSC) in a generic TCO/electron transport layer (ETL)/absorbing layer/hole transfer layer (HTL) structure are the ke...

To meet the demand for modern communication technology, the development of satellite communications has been consistently investigated. In this article, a rectangle-type SRR is attached to circular-type SRR for obtaining two frequencies in X-band operation. The designed structure exhibits negative metamaterial properties (Epsilon, mu and refractive...

In this article, a base station array antenna in 1 × 6 configuration is proposed for sub-6GHz 5G applications. Analyses have been performed on two orthogonally arranged dipole strips, a balun with various feeding schemes, and a reflector with different side walls. At the balanced feed position, aluminum is used to connect the feeding balun and the...

A small size neutralization line integrated flower‐shaped MIMO antenna is designed and analyzed for sub‐6 GHz type 5G NR frequency bands like n79 (4400–5000 MHz), n78 (3300–3800 MHz), n77 (3300–4200 MHz), and WLAN (5150–5825 MHz) applications. The novel approach of theory of characteristic mode analysis (TCMA) is introduced to provide physical insi...

In this article, a cognitive radio (CR) integrated antenna system, which has 1 sensing and 24 communication antennas, is proposed for better spectrum utilization efficiency. In the 24 communication antennas, 3 different operating band antennas are realized with an 8-element MIMO configuration. The sensing antenna linked to port 1 is able to sense t...

This paper investigates a nano-scaled patch antenna in optical frequency range. The proposed nanoantenna consists of a circular patch of dimension 130 × 130 nm², placed on a glass substrate with thickness 112 nm. To protect the antenna against environmental jeopardies, a superstrate layer of dimensions 40 × 2.5 × 110.4 nm³ has been added. To enhanc...

In this paper, a monopole Ultra-wideband (UWB) textile antenna is designed and analyzed for RF wireless energy harvesting (RFEH). The intended antenna exhibits excellent characteristics with a compact dimension of 80×60 mm2. In the front plane of the proposed antenna, the microstrip line fed enneagon (nonagon) shaped patch structure has been modifi...

Designed for increased speed and capacity, 5G has the potential to significantly expand the way the data will be processed and transported, and will allow a wide range of new use cases, which go far beyond the smartphone, already targeted by the 3G and 4G technologies. The present paper focused on the development of new antenna technologies for mil...

In this paper, a novel compact dual-wide band multiple input multiple output (MIMO) antenna system with a better performance for 5G communications systems at mm-wave frequencies (28/38 GHz) is presented. Firstly, a single element was designed and detailed to resonate at mm-wave band frequencies (28/38 GHz). The basic antenna is a simple circular pa...

Terahertz band gap is the range of frequency lying between the microwave band and the optical band, its range spectrum starts from 0.1 THz to 10 THz. This band provides unallocated wide bandwidth as well as very high-speed communication in the futuristic applications. This article presents a broadband microstrip 1 × 2 array antenna powered by hybri...

In this article, very compact 2 × 2 and 4 × 4 MIMO (Multiple-Input and Multiple output) antennas are designed with the help of Characteristics Mode Analysis to enhance isolation between the elements for UWB applications. The proposed antennas are designed with Characteristic Mode Analysis (CMA) to gain physical insight and also to analyze the domin...

In this work, a single square-shaped split-ring resonator (SRR) is designed with horizontally opened O-slots embedded on it. This was set to resonate at different resonant frequencies of C, X and Ku band applications. Through the designed geometrical shape, significant characteristics are achieved with a conformal polyimide dielectric substrate wit...

In the wireless technology field, analysis of materials having flexibility, compression strength, and excellent resistance are greatly demandable. The present work aims to find a flexible substrate material suitable for cloaking operation in the microwave frequency range. Commercially available analyzing techniques like Scanning Electron Microscopy...

Among other technologies, the Internet of Things (IoT) is one of the promising technologies that will help us to make our environment smarter and gather, analyze and process sensor data without any human intervention. Low Power Wide Area Network (LPWAN) is a technology that is part of the IoT, in which is the long-range (LoRa) technology that can p...

Frequency reconfigurability and high gain are the two essential parameters of any antenna design, and these two parameters are successfully achieved in the antenna presented in this manuscript. The two RF switching diodes are used to alter the charge distribution over the patch region to achieve frequency reconfigurability. The fabrication carried...

This paper presents the performance analysis of two different conformal band pass filters (BPFs) loaded with an array of circular complementary split ring resonators (CSRRs). Type-1 bandpass filter has been designed by integrating a 9 × 9 array of circular complementary split ring resonator on the bottom layer of the filter. Similarly, Type-2 bandp...

The manuscript represents a novel superstrate metamaterial loaded microstrip patch antenna to achieve multiband frequency reconfigurability. The performance is observed for the frequency band of 4 to 8 GHz. Metamaterial property is enabled by engraving triangular‐shaped split‐ring resonators in the substrate. Frequency tunability is achieved based...

A compact and triple-band polarization converting reflective type metasurface (PCRM) with a high polarization conversion ratio (PCR) is proposed for strategic wireless antenna-integrated applications. The unit cell of the metasurface is composed of S- and G-shaped patches separated with a parasitic gap and the grounded via is connected to the full...

This work presents the design and fabrication of a metamaterial-based stimulated dual band antenna on FR4 material (dielectric constant 4.3) to operate in Industrial, Scientific and Medical (ISM) and Radio-frequency Identification (RFID) applications. The antenna model had an overall dimension of 70 × 31 × 1.6 mm3 with etched T-slots and L-slots fo...

An innovative and simple method for attaining broadband frequency reconfigurable antenna structure is presented using low-cost materials and a compact design. The frequency reconfigurability is attained by the "OFF" and "ON" mechanisms of three PIN diodes. Many performance observations are carried out such as reflectance coefficient, bandwidth (BW)...

A compact structure coplanar waveguide type (CPW) based THz MIMO antenna is simulated with a design overall area is 100 µm × 40 µm using polymide (lossy) substrate. To form the design of proposed fractal CPW design with parasitic elements basic elliptical structures are modified. The current MIMO structure is etched corners of the elliptical shape...

A multiband, frequency reconfigurable, and bifunctional metasurface for simultaneous full-space control of Electromagnetic (EM) waves is proposed for wearable applications. The unit-cell structure contains concentric rectangular rings and empty Substrate integrated waveguide (SIW) for miniaturization. The miniaturized dimension of the Polydimethyls...

In this work, using characteristic mode analysis, a multi-layered nonuniform metasurface structured antenna has been optimized. The driven patch of square structure and the parasitic patch elements of circular radiating cross-slotted meta-structure are used in the proposed model. The modal significance characteristic angles and surface currents are...

This paper presents the design of a high isolation miniaturized compact diplexer model based on Band-Pass Filter technique, which is intended especially for a lower band [1.7 GHz to 1.9 GHz] fixed for 4G-LTE and a higher band [3.4 GHz to 3.8 GHz] fixed for 5G Sub-6 GHz. The designed diplexer is very compact with an overall size of 11× 36.49 mm2. Th...

Metamaterials with precisely chosen negative permittivity and permeability are preferable to cloak the target without scattering. In this work, a metasurface is designed by using graphene as conducting material to cloak a target cylinder under the instancing of TM and TE polarized waves in terahertz range of frequencies. The electric sheet impedanc...

A simple procedure for designing a highly selective microstrip bandpass filter of second order is presented in this paper. The proposed filter is composed of two principal square open-loop resonators and designed with planar structures on a Roger substrate. It is intended for 5G applications, especially for Sub-6 GHz range frequency [3.5–3.8 GHz]....