Offset parabolic reflector antennas

Rudge, A. W.

doi:10.1007/bf02998768

Cited by 7 publications

(1 citation statement)

References 25 publications

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“…[1][2][3] Usually, single-offest reflector and dual-offest reflector are used to design multibeam antenna for eliminating the effect of feed and secondary reflector. However, the asymmetry of reflector structure itself leads to the deterioration of cross-polarization (XP) and the value is generally about −25 dB, 4,5 which does not meet the high requirement in some special system. To improve the XP performance, the common scheme is (1) increasing the focal length to weaken the effect of the asymmetry on the XP performance 6,7 ; (2) reshaping the surface of the reflector to change the amplitude and phase distribution of surface field, then to improve the XP performance 8,9 ; (3) redesigning the feed to let it operate at the multimode state to improve the XP performance [10][11][12] ; (4) using dualreflector to suppress the XP performance.…”

Section: Introductionmentioning

confidence: 99%

Design of multibeam antenna with ultralow cross‐polarization

Tao,

Wang,

Wan

et al. 2024

Micro & Optical Tech Letters

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This paper presents a design to realize extremely low cross‐polarization level in multibeam antenna. The antenna consists of two reflectors placed on top of each other. The front reflector is a panel made of metal grid, which is used to separate two orthogonal polarizations. The rear reflector serves as the actual multibeam antenna surface. The multibeam antenna and feed array operated at Ku band are designed and fabricated. The test results show that the gains of the 28 beams can be better than 40.42 dBi, and the cross‐polarization level can be lower than −40 dB. The proposed method provides a novel idea for the design of ultralow cross‐polarization multibeam antenna.

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