Design of attenuated horn antenna to receive high power pulse

In this paper, we propose the new attenuated horn antenna configuration to measure high power pulse more than several hundred MW to avoid the RF break down in a short distance. The proposed antenna configuration is more compact and flexible to change attenuation level according to measurement ranges in comparison with high power measurement using high power attenuator. We designed the attenuated horn antenna with attenuation value about -96dB at 3GHz and -83dB at 10GHz. The proposed attenuated horn antenna is composed of a horn antenna, ridged waveguide and attenuated rectangular waveguide. We designed three sections individually and after designing, we combined three sections. We simulated the final antenna configuration for the performance verification. The proposed antenna configuration is applicable to receive high power microwave pulse effectively.