A Compact CPW-Fed Defected Ground Microstrip Antenna for Ku Band Application

摘要

A simple, compact, wide band microstrip antenna for Ku band application is proposed. The defected ground and CPW feeding is used to achieve wideband antenna. The presented antenna is designed on FR-4 substrate with dielectric constant of 4.4. The overall size of antenna is 25 x 23 x 1.6 mm. This Ku band antenna has been simulated using an Ansoft HFSS, electromagnetic simulation tool. The designed antenna resonates at three frequencies 11.2, 12.5, and 14.3 GHz with the return loss of-27.2191, -34.2027, and -35.896, respectively. It covers a bandwidth of 5.9 GHz extending from 10.5 to 16.4 GHz. It has maximum gain of 1.6 dB. Antenna has stable radiation pattern and group delay.