Design and Implementation of L-band Compact Microstrip Slot Antenna

摘要

A new technique to achieve compactness of microstrip antenna using FR4 superstrate is proposed. Compact microstrip slot antenna has been a candidate for the requirement in various wireless applications. Hence, microstrip slot antenna is designed with proposed technique and fabricated owing to their many advantages in practical applications.The experimental results show that antenna exhibited dual resonant frequency at 3.54 GHz and 4.98 GHz, resulting in 17% compactness with 270 MHz (7.32%) impedance bandwidth measured for VSWR < 2 with better return loss (RL) upto -36.14 dB (for S_(11)-10dB) is achieved. A gain of 6.44 dB and 7.01 dB with linearly polarized, broadsided radiation patterns is also achieved for the proposed antenna. The 3dB HPBW are 43° and 41° respectively.