DR-Fed Active Horn Antenna

Abstract — The main objective of this work is to design and implement a DR-fed active rectangular horn antenna. A rectangular dielectric resonator (DR) of high permittivity is used to couple energy to the waveguide to achieve wider impedance bandwidth, easily fabrication, and integration into planar circuit. A power amplifier having gain of 10 dB is integrated into the horn antenna to enhance the signal strength. Key Words — horn antenna, dielectric resonator, active antenna. Exact mathematical analysis on rectangular DRs is quite difficult. However, approximate techniques have been proposed for analyzing rectangular DRs. Dielectric waveguide model (DWM) has been proposed to predict the resonant frequency, impedance bandwidth, and radiation Q, which have been verified by measurements [7]. The equations can be written as I