Abstract:a prototype C-band pyramidal horn antenna was fabricated
after using High Frequency Structure Simulator (HFSS) software
to simulate, analyze, and optimize the design parameters.
The pyramidal horn antenna was designed to operate as a key
detection component for disaster prevention and warning instruments
in the domestic development of water-level radar
sensor (WLRS). Experimental measurements showed the horn
operating with a bandwidth of ~ 800 MHz from 5.4 GHz to
6.2 GHz with the central frequency at 5.8 GHz. The voltage
standing wave ratio (VSWR) in the operating frequency range
and the radiation pattern gains were measured to be smaller
than 1.2 and larger than 16 dB, respectively. The experimental
measurements compared well with the simulated results and
met the design requirements.