Jessen George

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A new method for enhancing the impedance bandwidth of a circular microstrip antenna is presented. The technique used is to slightly perturb the circular symmetry by a peripheral cut. Unlike the circular patch the modified structure can be matched to a microstrip line along the periphery. Also the antenna exhibits polarisation diversity (with feed location).(More)
A method to lower the resonant frequency of a rectangular microstrip antenna, without degrading the radiation characteristics is proposed. The overall reduction in the area of the new antenna is more than 60% of a standard rectangular patch antenna operating at the same frequency. This antenna may find applications in large phased arrays where the size is a(More)
The sewage effluent is used as source of irrigation in developing as well as developed countries. The usage of the treated effluent for agricultural purpose and recreational activities are due to the demand of the water worldwide. This study aims to reveal the impact of various concentration of the treated sewage effluent on the germination and(More)
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