Anup Kumar Bhattacharjee

Bio: Anup Kumar Bhattacharjee is an academic researcher from National Institute of Technology, Durgapur. The author has contributed to research in topics: Microstrip antenna & Antenna (radio). The author has an hindex of 20, co-authored 206 publications receiving 1614 citations. Previous affiliations of Anup Kumar Bhattacharjee include Jadavpur University & Dr. B.C. Roy Engineering College, Durgapur.

Compact Dual-Band Microstrip Antenna for IEEE 802.11a WLAN Application

Abstract: A compact dual-band rectangular microstrip antenna (RMSA) is realized by two different single-slotted single-band rectangular microstrip antennas with slotted ground plane. Each open-ended slot in the single-slotted antenna is responsible to generate a wide impedance band that is shifted to lower frequencies by the effect of the ground slot. The length and position of each open-ended slot is varied to operate the antenna in a suitable resonant band (5.15-5.35 and 5.725-5.825 GHz). The proposed antenna meets the required impedance bandwidth, necessary for dual-band IEEE 802.11a WLAN application (5.125-5.395 and 5.725-5.985 GHz). The dimension of the antenna (12 × 8 × 1.5875 mm3) shows an average compactness of about 53.73% with respect to a conventional unslotted rectangular microstrip patch antenna.

Design of Concentric Circular Antenna Array with Central Element Feeding Using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach and Evolutionary Programing Technique

Abstract: In this paper the maximum sidelobe level (SLL) reductions without and with central element feeding in various designs of three-ring concentric circular antenna arrays (CCAA) are examined using a real-coded Evolutionary Programming (EP) to finally determine the global optimal three-ring CCAA design. Standard real-coded Particle Swarm Optimization (PSO) and real-coded Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach (PSOCFIWA) are also employed for comparative optimization but both prove to be suboptimal. This paper assumes non-uniform excitation weights and uniform spacing of excitation elements in each three-ring CCAA design. Among the various CCAA designs, the design containing central element and 4, 6 and 8 elements in three successive concentric rings proves to be such global optimal design set with global minimum SLL (−39.66 dB) as determined by Evolutionary Programming.

Design of Concentric Circular Antenna Array with Central Element Feeding Using Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach and Evolutionary Programing Technique

Abstract: In this paper the maximum sidelobe level (SLL) reductions without and with central element feeding in various designs of three-ring concentric circular antenna arrays (CCAA) are examined using a real-coded Evolutionary Programming (EP) to finally determine the global optimal three-ring CCAA design. Standard real-coded Particle Swarm Optimization (PSO) and real-coded Particle Swarm Optimization with Constriction Factor and Inertia Weight Approach (PSOCFIWA) are also employed for comparative optimization but both prove to be suboptimal. This paper assumes non-uniform excitation weights and uniform spacing of excitation elements in each three-ring CCAA design. Among the various CCAA designs, the design containing central element and 4, 6 and 8 elements in three successive concentric rings proves to be such global optimal design set with global minimum SLL (−39.66 dB) as determined by Evolutionary Programming.

A Compact Microstrip Patch Antenna for Wireless Communication

Abstract: - A single feed compact square microstrip antenna is proposed in this paper. Two L slits are introduced on the right edge of the patch to study the effect of the slit on radiation behavior with respect to a conventional microstrip patch. An extensive analysis of the return loss, radiation pattern and efficiency of the proposed antenna is shown in this paper. For the optimize value of the slit parameters antenna resonant frequencies are obtained at 2.16, 2.68,3.22&4.37 GHz with corresponding bandwidth 11.02 MHz, 13.07 MHz, 35.86 MHz , 48.56 MHz and return loss of about -23.4,-15.2,-30.6&-20.3 dB respectively. For the lowest esonant frequency (2.16 GHz) the size of the antenna has been reduced by 71.14 % when compared to aconventional rectangular microstrip patch. Thecharacteristics of the designed structure are nvestigated by using MoM based electromagnetic solver, IE3D. The simple configuration, low profile nature, reduced size and quad band characteristics of the proposed antenna makes it suitable to operate in the frequency ranges of 2.165-2.176, 2.673-2.686, 3.208-3.244 and 4.343-4.392 GHz.

Radiation pattern optimization for concentric circular antenna array with central element feeding using craziness-based particle swarm optimization

Abstract: In this article, two optimization heuristic search techniques, craziness-based particle swarm optimization (CRPSO) and CRPSO with wavelet mutation (CRPSOWM), are applied to the process of optimal designing three-ring concentric circular antenna arrays (CCAAs) focused on maximum sidelobe level (SLL) reduction. Hence, three-ring CCAA without and with central element feeding are considered. SLL is a critical radiation pattern parameter in the task of reducing background noise and interference in the most recent wireless communication systems. To improve the radiation pattern with maximum SLL reduction, an optimum set of antenna element parameters as excitation weights and radii of the rings is to be developed. This is an optimization problem dealing with complex, highly nonlinear, discontinuous, and nondifferentiable array factors of CCAA design. So, one evolutionary optimization technique as CRPSO is adopted. To enhance the optimization performance of CRPSO further in exploring the solution space more effectively for a better solution, the wavelet theory is again applied in terms of mutation. This wavelet mutation-based CRPSO is named as CRPSOWM. It is shown that the proposed CRPSOWM technique outperforms the CRPSO significantly in terms of convergence speed, solution quality, and solution robustness. Computational results finally reveal that among the various CCAA designs, the design containing central element and four, six, and eight elements in three successive concentric rings proves to be the near global optimal design with near global minimum SLL (-43.4 dB) as determined by CRPSOWM. Real coded genetic algorithm (RGA) and its wavelet-based improved version (RGAWM) as well are also adopted to compare the results of above particle swarm optimization–based algorithms. © 2010 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2010.

Parallel CAD: Algorithm Design and Programming Special Section Call for Papers TODAES: ACM Transactions on Design Automation of Electronic Systems

Abstract: High-performance parallel computer architecture and systems have been improved at a phenomenal rate. In the meantime, VLSI computer-aided design (CAD) software for multibillion-transistor IC design has become increasingly complex and requires prohibitively high computational resources. Recent studies have shown that, numerous CAD problems, with their high computational complexity, can greatly benefit from the fast-increasing parallel computation capabilities. However, parallel programming imposes big challenges for CAD applications. Fully exploiting the computational power of emerging general-purpose and domain-specific multicore/many-core processor systems, calls for fundamental research and engineering practice across every stage of parallel CAD design, from algorithm exploration, programming models, design-time and run-time environment, to CAD applications, such as verification, optimization, and simulation. This journal special section will cover recent progress on parallel CAD research, including algorithm foundations, programming models, parallel architectural-specific optimization, and verification. More specifically, papers with in-depth and extensive coverage of the following topics will be considered, as well as other topics relevant to the design of parallel CAD algorithms and software tools. 1. Parallel algorithm design and specification for CAD applications 2. Parallel programming models and languages of particular use in CAD 3. Runtime support and performance optimization for CAD applications 4. Parallel architecture-specific design and optimization for CAD applications 5. Parallel program debugging and verification techniques particularly relevant for CAD The papers should be submitted via the Manuscript Central website and should adhere to standard ACM TODAES formatting requirements (http://todaes.acm.org/). The page count limit is 25.

Defected Ground Structure: Fundamentals, Analysis, and Applications in Modern Wireless Trends

Abstract: Slots or defects integrated on the ground plane of microwave planar circuits are referred to as Defected Ground Structure. DGS is adopted as an emerging technique for improving the various parameters of microwave circuits, that is, narrow bandwidth, cross-polarization, low gain, and so forth. This paper presents an introduction and evolution of DGS and how DGS is different from former technologies: PBG and EBG. A basic concept behind the DGS technology and several theoretical techniques for analysing the Defected Ground Structure are discussed. Several applications of DGS in the field of filters, planar waveguides, amplifiers, and antennas are presented.