A Metamaterial based Microstrip Patch Antenna with Improved Directionality

A Metamaterial based Microstrip Patch Antenna with Improved Directionality

Author(s):

Nitin Kumar , Dehradun Institute of Technology (DIT University); Anumeha Badoni, Dehradun Institute of Technology (DIT University); Pravesh Belwal, Dehradun Institute of Technology (DIT University); Ranjita Singh, Dehradun Institute of Technology (DIT University); Sandeep Sharma, Dehradun Institute of Technology (DIT University)

Keywords:
HFSS, Patch Antenna, Metamaterial, Reduced Beam-Width

Abstact:
This paper focuses on improving the directive properties of a conventional patch antenna by using a known technique of applying metamaterial slab as a cover. The metamaterial under consideration is a modification of Pendry's SRR structure and is equivalent to two SRRs connected back to back. The unit cells were arranged in an array configuration, investigation of S- parameters was done for checking the Negative index property. As expected with the use of metamaterial as a cover, directionality of conventional patch antenna improved significantly and the 3 dB beam-width reduced. A conventional patch antenna generally shows 3 dB beam-width of ~80deg while the antenna presented in this paper with the metamaterial shows improved 3dB beam-width of 45 deg.

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