Circularly polarized broadband patch Antenna using quasilumped Impedance surface

Abstract

Micro strip patch antenna plays an important role in modern communication newlinesystems and hence drag an important attention of researcher with the development of newlinemodern Fabrication Techniques at present it opens a wide door for development of newlinewideband antennas for Radio frequency and microwave applications, this dissertation newlinepresents different patch Antennas based on different lumped parameters and meta newlinematerial Design such as split Ring Resonator, Inter Digital Capacitance meandered lines newlineetc. As we know that the radiation of Antenna depends upon the electrical length rather newlinethan physical length these kind of optimization in physical/electrical Length mostly newlinesuffers deprived VSWR, Poor Radiation Resistance along with other feeding hurdles. newlineThe wave length of Radiating signal is one of the most important factor which changes newlinethe electrical length of any micro strip structure the Electrical length can also be newlinecontrolled by using various lumped parameters. This dissertation consists of a different newlinepatch Antenna s for lower and higher frequency response. The designing of proposed newlineAntenna is explained in 2 sections. newlineFirst one is based on inter digital capacitance Quasi Lumped Parameters for newlinefrequency range of 1to 6GHZ. newlineIn this sections we present 5 Antennas and obtained the effect of Increasing newlinefingers in an inter digital capacitance along with Quasi Lumped Parameters such as newlineprinted Inductor and Pad capacitance with varying Vertical and Horizontal slots here we newlineobserve that with in increasing the number of fingers the gain of antenna improves by newline12.5% on the other hand the dual inter digital capacitance and pad capacitance is very newlineuseful for obtaining multiband operations and finally introduction of inductance slot of newlinevarying dimension improve the gain by 149.18% for a Radiating frequency 5.6 GHZ newlinealong with multiband applications. newlineHence with the Introduction of Quasi lumped Parameter on Patch Antennas newlineDesign (5 designs) especially Pad capacitance, Inductance slot and inter digital newlineCapacitance with mendered lines Improve