Optimized Spline-Profile Smooth-Walled Tri-Band 20/30/44-GHz Horns

Better multiband horn antenna design by using the real modal content at input

“…The spline profiled smooth wall horn has been reported in the literature ( [2]) as a design able to operate on several frequency bands distant by more than one octave. The variables of the geometry are the positions of the control points of the spline function.…”

“…Solutions like [1] may be used, but they are limited to particular modes and aren't suited for circular polarization. The bibliography study has also shown that wideband operation can be achieved with horns classically used for space applications, like the profiled smooth wall horn (spline in [2] or piecewise linear in [3]) or the corrugated horn ( [4]). Both horn technologies will be used in the application part of this paper.…”

A Fast and Accurate Method of Synthesizing X-Wave Launchers by Metallic Horns

“…Such horns are designed by optimizing their profile to match the far-field to a specified radiation pattern. Excellent characteristics of spline-profiled horns have also been reported, such as low cross-polarization [35], multiband operation [36], low sidelobe level [37], and high Gaussicity at THz frequencies [38], [39]. Performance of such antennas can be further improved by, for instance, integrating a dielectric lens [40], [41].…”

A compact feed horn with wide‐distributed operating bands of Ku/Ka/W

“…Comparing with the former solutions, designing a multiband horn comes to a more suitable candidate in the demand for simplicity. Up to now, there are mainly two types of multiband feed horns, that is, multimode horns, with one cavity and coaxial horns with multiple cavities. Usually, the operating bandwidth of horns with single cavity is limited to 2.7:1, and the use of dielectric rod will increase the ratio to 5:1 or more .…”

“…To the best knowledge of us, there are mainly three common methods to realize multiband-characteristics for a reflector antenna: using multiple off-set horns or active electronically scanned arrays reflected by respective sub-reflectors, [2][3][4] adopting frequency selective surfaces (FSS) as its sub-reflectors [5][6][7] with two horns placed to both sides of it, and employing only a single multiband feed horn [8][9][10][11][12][13][14][15][16][17] in a reflector antenna. Comparing with the former solutions, designing a multiband horn comes to a more suitable candidate in the demand for simplicity.…”