Design of an UWB travelling wave antenna for high power transient applications

Abstract

The paper presents the ultra-wide band antenna with minimal dimensions which is the major factor for High power microwave (HPM) systems. The radiating element has very good directive patterns without any dispersion over the pattern bandwidth. The antenna is a travelling wave type and is designed for the 300MHz - 3GHz and is simulated in High Frequency Structure Simulator (HFSS). The antenna generates the high power pulses for transient regime and having rise time in the order of picoseconds. A specialized connector is designed to input the antenna and capable of handling power in hundreds of kilowatts. The coaxial to stripline transition is used as connector. The simulated return loss is typically 10dB over the frequency band meets the operational requirements.