Vivaldi Antenna-Fed Switchable Beam-Scanning High-Gain Wide Band Parabolic Reflector Design

In this study, a planar Vivaldi antenna-fed reflector antenna is presented for wide-band (L and S band) applications. The proposed antenna operates between 500 MHz and 4.6 GHz. The Vivaldi feed antenna is designed on a low-costFR4 substrate with a thickness of 1.6 mm. In this design, innovative approaches to gain enhancement techniques such as corrugations and directive elements are used. The standing wave ratio of the antenna is less than 2 throughout the operating band and the gain is 26 dBi. The analyses are designed using a full-wave three-dimensional electromagnetic simulation tool.