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- W2009911612 abstract "The cross polar power resulting due to illumination of an offset reflector by a linearly polarized circular feed operating in TE 11 mode can be suppressed considerably by employing TE 21 and TM 11 modes having proper mode coefficients and relative phases. This paper presents the design and performance evaluation of such a smooth walled circular tri-mode matched feed. Using an analytical pattern for the tri-mode feed and physical optics (PO) for computation of far field, mode coefficients and relative phases are estimated using particle swarm optimization (PSO) technique. Through a parametric study in HFSS, matched feed dimensions to achieve required mode coefficients and phases at the design frequency are determined. HFSS is used to evaluate the performance of the matched feed in terms of cross-polarization and beam squinting. A −30 dB cross-polar bandwidth of 2.73% is achieved at the design frequency." @default.
- W2009911612 created "2016-06-24" @default.
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- W2009911612 date "2015-02-01" @default.
- W2009911612 modified "2023-10-18" @default.
- W2009911612 title "A tri-mode low cross-polarized circular matched feed for offset reflector antenna system" @default.
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- W2009911612 doi "https://doi.org/10.1109/ncc.2015.7084838" @default.
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