An Advanced Compact Radiator Element for Multifeed Antennas

Abstract

A new compact multimode horn for multifeed application is presented, the principle of operation is described and starting values for a first design iteration are given.Furthermore measurement results of a radiator element with an aperture diameter of 1.7 lambda, fed by a four probe polarizer, are presented.

Hexagonal-Shaped Broadband Compact Scrimp Horn Antenna for Operation in $C$-Band

“…An optimization tool based on the BoR-FDTD solver coupled with a genetic algorithm is applied to Scrimp horns first presented in [11] and [12]. The proposed tool is applied to optimize several antennas with different aperture sizes while minimizing the antenna size and satisfying the given performance requirements of Table I.…”

“…1(b)] is placed at the mouth of the horn with a depth of and it is extended until the antenna aperture . The operating principle of the this antenna is based on the excitation and mixing of higher order modes with the fundamental mode in order to generate low cross-polarization levels [11], [12].…”

“…Another interesting compact horn configuration, known as Short Circular Ring-loaded horn with Minimized cross-Polarization (Scrimp) horn, was introduced in the late 1990s [11], [12]. Experimental results for a multifeed satellite system showed excellent performance for a horn aperture size of .…”

Quad-Furcated Profiled Horn: The Next Generation Highly Efficient GEO Antenna in Additive Manufacturing

“…For aperture sizes up to 2λ0, many candidate antenna solutions with excellent RF performance and low profile have been developed. These solutions include the Scrimp horn [4,5], the short backfire antenna [6][7][8][9] or the stacked Fabry-Perot cavity antenna [10]. However, for the aforementioned radiating elements, the bandwidth and the aperture efficiency decrease steadily as the radiating aperture is increased.…”