This paper presents comparative study of a rectangular Microstrip patch antenna at
Terahertz (THz) frequency ranging from 0.6 to 1 THz with and without
superstrate. The results reported here were obtained using Ansoft HFSS 11.0
which uses full wave finite element method for simulation. In this study the
miniature antenna was simulated first and then we load it with a superstrate
and varied the height of the superstrate to optimize the antenna performance.
Here in this paper we have selected 4 antenna configurations to compare. First
antenna is a simple rectangular patch, second antenna is having a superstrate
of height 50 microns, Third antenna is with a superstrate of 75 micron height
and the fourth antenna is with a superstrate of 100 micron. Best performance of
antenna i.e., -10dB bandwidth of around 19% was achieved at central frequency
of 0.5 THz and 75 micron superstrate height.
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