Wide Ku-Band Microstrip patch antenna using defected patch and ground

Abstract

New Simple and compact wide Ku-band Microstrip patch antenna is proposed. Defected patch and ground design is used to achieve wide band. The proposed antenna is designed on FR-4 substrate with dielectric constant 4.9 and thickness 1 mm and its overall size is 17 × 17 × 1.07 mm3 with patch size 13 × 11 × 0.035 mm3. The results of proposed antennas like return loss, VSWR and radiation pattern (gain, directivity and efficiency) are simulated and analyzed using commercial computer simulation technology microwave studio (CST MWS). By simulating this antenna structure using above EM tool we are getting one wide band from 15.27 to 16.51 GHz with resonant frequency at 15.8 GHz. Return loss at this frequency is -25 dB. Gain and directivity at the resonant frequency are 4.45 dB and 5.17 dBi respectively. Radiation efficiency of this antenna is 84.8%. The VSWR ≤ 1.1 for the resonant frequency. The low profile nature and simple configuration of antennas show the way to easy fabrication. The proposed antenna is operating in wide range of Ku-band which includes different satellite applications (Fixed satellite, Mobile satellite, aeronautical radio navigation, space research, radiolocation etc.).