VARIABLE RADIATION PATTERN FROM CO-AXIAL PROBE FED RECTANGULAR PATCH ANTENNA USING METAMATERIALS

Saleem Akram, T. Venkata Ramana

Abstract: The idea of obtaining variable radiation patterns from the same antenna is important aspect in achieving the adaptive antenna systems. In the EM signal processing the change of radiation signifies the information to be transmitted, its rate of transmission, the geographical changes and direction to transmit etc. i.e. each time when the requirement arises to change the radiation pattern it has to be done to satisfy the conditions. Electronically steerable antennas were used where the antenna radiation will be altered by varying the feed and similar case is applied for shaped patterns from array antenna where the feed to be given will be calculated and given accordingly. In the present concept the metamaterials are used to obtain different radiation patterns occurred at different operating frequencies using the same antenna without changing the antenna physically are varying its feed.

Keywords: Inductance, capacitance, operating frequency, variable radiation, enhancement, radiation cancellation.

DOI: https://doi.org/10.15623/ijret.2015.0408046