Investigation of amplitude and phase behavior of two wide-band pyramidal Horn Antennas and effect of physical size on radiation characteristic

This article is about of aperture size and opening angle of horn flare of wideband antennas effects, on the amplitude and phase patterns. In this study, behavior of amplitude pattern of wideband horn antenna in the E-plane and H-plane and effect of magnetic currents and phase distribution of these currents on aperture of two sample antennas are observed.
As we mentioned in above, in this paper two different horn antennas with different physical size were studied.
It is noticeable, that in design of wideband horn antennas, such as (9:1), studies are focused on impedance characteristic and VSWR behavior of antenna. But in this paper for two design of antennas,
By using analytical relations, radiation characteristics of antennas at 4 different frequencies for E-plane and H-plane are calculated. For validation of calculation, two antennas with similar size, in CST studio microwave and HFSS simulators have been simulated.
Results of these studies, show that by increasing frequency, variation of 3-dB beamwidth for E-plane is more than 3-dB beamwidth of H-plane. But variation phase Pattern in E-plane is less than variation of phase pattern of H-plane.