alexa Electromagnetic Coupling Microstrip Patch Antenna for
ISSN ONLINE(2320-9801) PRINT (2320-9798)

International Journal of Innovative Research in Computer and Communication Engineering
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Special Issue Article

Electromagnetic Coupling Microstrip Patch Antenna for Improving Wide Bandwidth and Broad Beamwidth

G.Karthikeyan1, Dr.Meena @ jeyanthi2, Ms.S.Soniya3, Ms.Thangaselvi4
  1. P.G Student, P.S.R Engineering College, Tamilnadu, India
  2. Professor, PSNA CET, Tamilnadu, India
  3. Asst.professor, P.S.R.Eng.college, Tamilnadu, India
  4. Asst.Professor, PSNA CET, Tamilnadu, India
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Abstract

A wideband and broad-beam microstrip antenna loaded with gaps and stubs is proposed. The antenna is based on a two-layer stacked electromagnetic coupling microstrip patch antenna (ECMSA). In the analytical cavity model of describing the behavior of MSAs, the antenna is modeled as a cavity with its two side-walls as a perfect magnetic conductor and top- and bottom-walls are perfect electric conductors. Here multiple modes used. Their beams are broader than that of a microstrip antenna with only one excited mode. A conducting cylinder and the coupling aperture are used to excite multiple modes, conducting cylinder connecting the radiation patch and the feed line can influence the parallel connection inductance so that the electromagnetism characters of cavity were changed. Thus antenna most widely used military and commercial applications, its needs to uses antenna size to be reduced but cover the large area. Existing system uses transmission-line model is easy to use, it suffers from numerous disadvantages. It is only useful for patches of rectangular shape, but proposed system meet model expansion analysis. Here the patch is viewed as a thin TMz,-mode, it has cavity with magnetic walls thus uses both rectangular and circular patches, So CRLH structure are more stable than the conducting cylinder. The upper patch of the antenna is loaded with two arc gaps and three stubs in the proposed system. The radiation patch lies on the upper substrate, and the feed line lies between the upper and the lower substrates. Adjusting the size of the two arc gaps and three stubs, changes the operating bandwidth of the exciting multiple modes. The ECMSA is used to achieve wide impedance bandwidth, while the gaps and stubs-loaded patch is used to obtain broad-beam.

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