Contralateral deviation of the eyes was sustained for a week in a patient with discrete subcortical frontal lobe haematoma. When deviation recovered, ipsilateral saccades were hypo-metric and saccadic latencies were prolonged in both horizontal directions. Smooth pursuit was paretic during tracking toward the side of the haematoma. Pursuit gain was higher during tracking to the contralateral si...

This paper discusses a far-end crosstalk (FEXT) canceller for twisted-pair transmission. Many twisted-pair systems such as fiber-to-the-curb, very high-speed digital subscriber line, and high-speed LAN systems, use frequency-division duplexing (FDD) for duplex transmission. It is shown that the maximum reach of FDD twisted-pair system is limited by the performance of its upstream channel, which...

High resolution RADAR images of contiguous targets like vehicles on road often suffer from side lobe enhancement. This leads to false alarm in target detection and degradation in image quality. In this paper, adaptive CLEAN algorithms are introduced to eliminate side lobe enhancement and significantly improve the target detection with better image quality. The effectiveness of the CLEAN algorit...

In the antenna arrays the side lobe level is main problem which causes wastage of energy. This paper describes the application of a recently developed metaheuristic algorithm, known as the Particle Swarm Optimization Gravitational Search Algorithm(PSOGSA) to optimize the spacing between the elements of the linear antenna array to produce a radiation pattern with minimum side lobe level. Numeric...

In this paper a new approach for reducing the side lobe level of amplitude tapered linear array using Chebyshev polynomial and Particle Swarm Optimization (PSO) is presented. The array geometry synthesis is first formulated as an optimization problem with the goal of side lobe level reduction and then solved using PSO algorithm for optimum current excitations. While solving optimization problem...

The theory of the dielectric cone antenna has been known since the early seventies. On their own, this antenna has a reasonably circular symmetric radiation pattern but exhibits an undesirably high side-lobe level. A properly designed metallic shield, which does not interfere with the field structure of the dielectric cone, may be used to reduce the side-lobe level. Although in principle this a...

A new antenna structure with lower side lobe pattern and higher gain was designed by combining a microstrip rectangular planar antenna array with the separated feed network technique. In this paper, the side lobe behaviors of two different radiating structures have been studied and compared. The first antenna configuration (“Structure 1”) is a 16-element planar antenna array whose feed line is ...

This paper deals with a scheme of Antenna array side lobe reduction by varying amplitude of each element of the antenna array using the Tsukamoto fuzzy logic controller. Here it has been tried to reduce the Side Lobe Level of the antenna array radiation pattern by changing the amplitude of the antenna array elements. Spacing between the antenna array elements and the corresponding phase shift i...

A design problem of non-uniform circular antenna arrays for maximum reduction of both the side lobe level (SLL) and first null beam width (FNBW) is dealt with. This problem is modeled as a simple optimization problem. The method of Firefly algorithm (FFA) is used to determine an optimal set of current excitation weights and antenna inter-element separations that provide radiation pattern with m...