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Design of a 3:1 Wideband Circular Polarizer with Multilayered Meanderline Using Hybrid Method
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 Title & Authors
Design of a 3:1 Wideband Circular Polarizer with Multilayered Meanderline Using Hybrid Method
Lee, Cheol-Soo; Pack, Jeong-Ki;
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 Abstract
In this paper, a wideband circular polarizer operating in the frequency range of 6~18 GHz is designed and fabricated using a multilayer structure with meanderlines. A T matrix expression for the unit structure, which consists of meanderline, dielectric substrate and spacer, was derived using the boundary value solution. A proposed meanderline structure was modeled as an array of unit meanderline cell in order to apply the waveguide model with PEC and PMC boundary conditions. The calculation procedures to obtain an equivalent susceptance of the unit meanderline cell using HFSS was also suggested. Using a hybrid method, which combines the T matrix with the HFSS results, and cut-and-try method, a wideband circular polarizer with low insertion loss and good AR performance was designed. The fabricated polarizer has the return loss less than -10 dB within 92 % bandwidth, the average insertion loss less than -0.24 dB, and the average AR below 2.6 dB for full 3:1 bandwidth.
 Keywords
Wideband Circular Polarizer;Meanderline;
 Language
Korean
 Cited by
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