High Gain Coplanar Feed Ultra Wide Band Wearable Antenna Using Artificial Magnetic Conductors

An Ultra wide band wearable antenna with coplanar waveguide feed is presented in this paper. The antenna was designed and fabricated in jeans substrate. A coplanar feed of 50 Ohm impedance was used so as to provide the antenna a uniplanar structure. The simulation results showed ultra wide band characteristics with return loss below -10dB for the entire band of 3.1GHz to 10.6GHz. The antenna was fabricated using copper tape with the geometry of antenna etched on it. The return loss of the fabricated antenna was measured for a frequency of 3GHz to 8GHz. Over this range the antenna return loss was found to be below -10dB and was found to be in agreement with the simulated results. In order to increase the gain of the antenna Artificial Magnetic Conductor (AMC) was used. It was found to be exhibiting AMC characteristics at multiple frequencies. This was attached to antenna geometry and simulation studies were carried out. The simulated results showed an increase in antenna gain.