Design of a Novel Dual-band High Gain Antenna

In order to adapt to the requirement of the modern dual-band communication system, this paper presents a novel dual-band high gain antenna by adding an annular metal cylinder to the aperture in the center based on enhanced microwave transmission property of corrugated structure. Both the simulation and measurement results show that the gain of the proposed antenna is 12.0 dB and 12.9 dB at 12.7 GHz and 14.4 GHz separately, which is increased by 5.6 dB and 6.3 dB compared with the conventional antenna. Moreover, the Half Power Beam Width (HPBW) of the proposed antenna also gets much better.