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Broadband Space fed design of compact square ring microstrip antennas fed by proximity fed rectangular microstrip antenna or by 3 × 3 gap-coupled array configurations of rectangular microstrip antennas, is proposed. Various space fed configurations of ring patch namely, single patch, 1 × 3 and 3 × 1 ring microstrip antennas, plus shaped and 3 × 3 spaced fed patch array configurations are studied....
A novel design and analysis of circular microstrip antenna loaded with a key-shaped slot is presented. The introduction of key-shaped slot in the microstrip patch excites the additional modes which are orthogonal to each other, thus demonstrating multi-band dual polarized antenna characteristics. Also the next higher order modes manifest the broadband antenna response. For the optimization of the...
A novel design of ultra-wideband star shaped printed monopole antenna is proposed. A star shaped structure is realized by combining triangular shaped planar monopole patch with its inverted configuration. A detailed parametric study of the offset placement of two triangular shaped patches with respect to the patch centroids, variation in distance between the base of composite structure and the ground...
In circularly polarized radiation, the rotational orientations of the transmitter and the receiver antennas are unimportant in relation to the received signal strength. In this paper, a center square slot cut elliptical patch microstrip antenna to realize a tunable circular polarization in 1000 MHz frequency band is proposed. It yields axial ratio bandwidth of nearly 1.2% over tunable range. A rectangular...
Web logs are files created to store data about users and all accesses made to web pages by various users. It stores various details such as User Id, URL accessed. Increasing use of information search on web is leading to increase in size of web log files. Mining web is implementation of mining techniques to these log files stored on client or server. Types of mining are Web usage mining, Web structure...
A lot of research has been done on efficient implementation of RS code encoders and decoders as VLSI chips. However, none of them tries to seek a unified approach for solution to obtain VLSI hardware for RS encoders and decoders which can be easily configured for use across a large set of application areas with varying specifications. In this paper, a novel parallel RS decoding algorithm suitable...
Design and analysis of novel dual-band dual polarized D-shaped microstrip antenna is proposed. The D-shaped microstrip antenna excites TM10 and TM01 modes which are orthogonal to each other, thereby realizing dual polarized antenna characteristics. Further, another novel configuration, a vertical slot cut D-shaped patch is proposed. The slot cut D-shaped patch demonstrates triple band dual polarized...
A novel compact ultra-wideband circular ring sector printed monopole antenna with decreasing Sectoral angle and modified feeding structure is proposed. A detailed parametric study for Sectoral angle decreasing from equivalent circular monopole patch to 330° ring Sector up till 60° ring Sectoral patch is presented. With decreasing angle ultra-wide band response with increasing lower frequency of the...
Circularly polarized sequentially rotated gap-coupled array configuration of angular Sectoral slot cut circular Microstrip Antenna in 1000 MHz frequency band is proposed. The angular Sectoral slot degenerates TM11 mode into two orthogonal modes to give axial ratio and VSWR bandwidth of 10 and 43 MHz, respectively, in a single patch. To increase gain and axial ratio bandwidth, sequentially rotated...
Analysis and design of multi-band dual polarized circular microstrip antenna with an angular cut and pair of rectangular slot in 1000 MHz frequency range is proposed. The angular cut degenerates TMjj and TM21 resonant modes of equivalent circular patch into two orthogonal modes to yield multi-band response. Further pair of rectangular slots optimizes the input impedance at degenerated resonant modes...
This paper proposes a novel Multi-band dual polarized elliptical shaped microstrip antenna cut with square and rectangular slot. The square slot in elliptical patch degenerates patch TM11 and TM21 modes into two orthogonal modes to realize multi-band characteristics. The optimization of the input impedance at degenerated resonant modes is done by the introduction of the rectangular slot to realize...
Some researchers have not used the ‘strong’ formulations for single and multistage warehouse location problems despite it being well known earlier. In this paper we give ‘strong’ and ‘weak’ formulations of the single stage uncapacitated warehouse location problem (SSUWLP) by borrowing from the literature on capacitated version of the problem. The constraints borrowed are ‘weak’ constraints, demand...
Broadband shorted Sectoral microstrip antennas with rectangular slot for Sectoral angle increasing from 50° to 120° are proposed. In shorted patch, rectangular slot reduces the resonance frequency of shorted higher order TM1/4, 1 mode and along with fundamental shorted TM1/4, 0 mode, yields broadband response. A maximum bandwidth of nearly 2000 MHz (>70%) is realized in shorted slot cut 120° Sectoral...
With the advancement in personal mobile communication systems, need of antennas that gives ultra-wideband response has increased. In this paper a novel ultra-wide band plus shaped planar Microstrip antenna is proposed. The plus shaped structure is realized by combining two rectangular shaped planar monopole printed patches. A details parametric study to realize the ultra-wideband operation in 3 to...
Circular polarized microstrip antennas are required in applications wherein an uncertainty in the direction of received signal polarization exist. In this paper an offset slot cut circular microstrip antenna to realize circular polarization in 1000 MHz frequency band is proposed. It yields axial ratio bandwidth of 10 MHz (∼1.2%). To increase the axial ratio bandwidth its gap-coupled array configuration...
Multi-band dual polarized circular microstrip antenna cut with circular and rectangular slot is proposed. The circular slot in circular patch degenerates patch TM11 and TM21 modes into two orthogonal modes to realize multi-band characteristics. The rectangular slot helps in optimizing the input impedance at degenerated resonant modes to realize optimum bandwidth of 1 to 2% in 1000 MHz frequency range...
Analysis and design of broadband corner truncated rectangular microstrip antenna cut with two circular slots in 10 GHz frequency band is proposed. The truncated dimension and circular slot degenerate patch fundamental TM01 mode into two orthogonal modes to yield circular polarization over smaller range of the VSWR bandwidth. Further similar design of corner truncated and circular slots cut square...
Research in face recognition under constrained environment has achieved an acceptable level of performance. However, there is a significant scope for improving face recognition capabilities in unconstrained environment including surveillance videos. Such videos are likely to record multiple people within the field of view. Face recognition in such a setting poses a set of challenges including unreliable...
Proliferation of high speed applications is leading towards increase in the dynamic power consumption per chip. Clock gating is found to be the most effective technique by which overall power consumptions can be reduced without sacrificing the performance and functionality of the chip. Look ahead clock gating is one of the new approaches in this area which overcomes the drawback of small time window...
In this paper Vertical Decomposition Approach is used for the first time to solve Single Stage Capacitated Warehouse Location Problems (SSCWLP). Stages of Warehouse location problems are decomposed to get smaller sized problems, which are relatively easier to solve. New formulation of SSCWLP is developed using the style of [91; and worked out by applying vertical decomposition approach. Relaxation...
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