International Journal of Computer and Applications

Time-Frequency Analysis.

Antenna Theory And Design

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.

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

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.

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

A compact single layer coaxially fed wideband microstrip antenna is presented in this letter. The proposed antenna consists of a U-shaped patch and a rectangular ground plane embedded with two open ended rectangular ground slots (RGS). The antenna is designed for wide band of communication (3.02–6.03 GHZ). It is found that the maximum bandwidth of the antenna is obtained about 66.5% when a rectangular slot is inserted near the lower edge of the U-shaped patch. The antenna was studied experimentally for impedance bandwidth, and gain. It is shown that the antenna can cover the bands of several applications including IEEE 802.11n (and the older 802.11a) WLANs application (allocate channels between 5.15 and 5.825 GHz) and WiMAX (3.2–3.8 GHz) application. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:959–963, 2016

Design of U-shaped antenna using different substrate with enhanced bandwidth for WLAN/WiMAX applications

This paper presents a low-profile, isolation-enhanced, multiple-input multiple-output (MIMO) antenna with a band-notch feature. The MIMO structure comprises two fractal-shaped slotted radiating elements along with a defected ground structure. Arlon AR600 is used as the substrate material. The frequency notch is obtained by etching a split-ring rectangular resonating structure into the surface of the radiating elements. An impedance bandwidth of 3.0–11.1 GHz is obtained along with a band-notch feature centered at exactly 3.5 GHz. The analysis of the frequency- and time-domain response of the proposed structure gives satisfactory results, and good agreement is observed between the simulated and measured data. The simple design and compactness along with the incorporated band-notch feature justify the applicability of the presented antenna in the ultra-wideband communication domain.

Computational and experimental analysis of a low-profile, isolation-enhanced, band-notch UWB-MIMO antenna

In this paper, we have proposed the design of quantum cost (QC) optimized 4-bit reversible universal shift register (RUSR) using reduced number of reversible logic gates. The proposed design is ver...

Quantum cost optimized design of 4-bit reversible universal shift register using reduced number of logic gate

A single feed compact rectangular microstrip antenna for quad band applications has been designed and developed. This antenna is incorporated by four L-shaped slot structure along the length on the patch. Four resonating frequencies are obtained at 1.845 GHz with return loss -21.19 dB, 2.59 GHz with return loss -17.69 dB, 3.29 GHz with return loss -21.56 dB and 4.825 GHz with return loss -22.31 dB. The size of the antenna has been reduced by 77.3% when compared to a conventional microstrip patch without slot. An extensive analysis of the return loss, radiation pattern and gain of the proposed antenna has been given in this paper. The characteristics of the designed structure are investigated by using MoM based electromagnetic solver, IE3D.The simple configuration and low profile nature of the proposed antenna leads to easy fabrication and multi frequency operation makes it suitable for the applications in Wireless Communication system.

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A Compact L-slot Microstrip Antenna for Quad band Applications in Wireless Communication

A novel compact asymmetric-slotted-slit-rectangular microstrip patch antenna coaxially fed is proposed. The antenna provides resonating frequency at 6.06 and 6.45 GHz providing approximately 66.33% size reduction compared to an ordinary microstrip patch antenna. Further the antenna has been modified to resonate at a frequency of 4.66 GHz, providing approximately a size reduction of 80.22%. A good agreement between simulated and measured results is obtained. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:244–248, 2014

Anup Kumar Bhattacharjee

Papers

Design of U-shaped antenna using different substrate with enhanced bandwidth for WLAN/WiMAX applications

Computational and experimental analysis of a low-profile, isolation-enhanced, band-notch UWB-MIMO antenna

Quantum cost optimized design of 4-bit reversible universal shift register using reduced number of logic gate

A Compact L-slot Microstrip Antenna for Quad band Applications in Wireless Communication

size reduction of rectangular microstrip antenna