Performances of Symmetric and Asymmetric T-slot Microstrip Antennas for Bluetooth Communication
Keywords:Microstrip antenna, T-slot, Bluetooth, bandwidth, gain
Bluetooth is a short distance unlicensed wireless communication technology operating at 2.4 GHz band and primarily used for data transfer between portable devices. In this paper, small size microstrip patch antennas, loaded by symmetric and asymmetric T-shaped slots are designed and a comparative study of their performance at Bluetooth frequency band is presented. High frequency structure simulator (HFSS) software is used for antenna simulation. Improved bandwidth, uniform radiation pattern and good gain of the antenna are achieved using asymmetric T-slot microstrip antenna compared to symmetric T-slot microstrip antenna. The dimension of asymmetric T-slot microstrip antenna is 75% less than the symmetric T-slot microstrip antenna. Performance of the antennas, through parametric studies, related to the dimensions of the symmetric and asymmetric T-slots, is also presented.Â Â
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