Abstract:

A microstrip antenna based on highimpedance surface of microwave photonic crystals was proposed, which works on a centre frequency of
 11.75 GHz. High impedance surface can improve the characteristics of surface wave band gap. Simulation by HFSS shows that microstrip antenna gain increased around 0.6 dB and low back lobe radiation maximum reduced around 10 dB. Thus the overall performance of the antenna is improved.

Key words:  microtrip antenna, photonic crystals, bandgap, highimpedance surface, gain