Performance comparison of metallic cone-sphere-inserted and dielectric lens-corrected conical horns

A Circularly Polarized Conical Horn with an Inserted Metallic Cone-Sphere [Antenna Designer's Notebook]

“…As reported in [18,[20][21][22][23], it is possible to design an unloaded ill horn with the same aperture size as that of horns with inserted metallic spheres [20,21] or cone-spheres [18,22,23] to offer equivalent gain and efficiency. However, the length of the unloaded horn would typically be 50% longer than the horn with inserted sphere or cone-sphere.…”

“…The X-band horn was a scaled version of the Ku-band horn presented in [16,18,[20][21][22][23]. The length of the horn section, L h , was 2.S--1" and the semi-flared angle was 30.14°.…”

“…The performance of a circularly polarized short horn with an inserted metallic cone-sphere is systematically compared with the performance of a dielectrically loaded circularly polarized horn. While the horn used in this investigation was scaled from our recent work [16,18,[20][21][22][23] in Ku to X band, the X-band L-shaped probe employed in [7] was used as the circular-wave polarizer.…”

Geometric variations of metal baffle in horn antenna for improved gain

“…There are numerous efforts being taken to improve conical horn antenna performance. Conical Horn antenna have been loaded with metallic disc [2,3], a sphere [4,5], a cone sphere [6,7]. Among others the idea of metallic cone sphere insertion in horn antenna is more optimized solution, in respect to gain and return loss [8].…”