The 90-degree twister of polarization
Microstrip array of printed S-shaped metal
particles has resonant feature to transform linear polarization of normally
incident plane wave to orthogonal linear polarization of the reflected field. This very
thin structure can perform full transformation of linear polarization to orthogonal.
Configuration of microstrip array of S-shaped particles as well as
frequency dependencies of reflection coefficients are shown in the Figures below.
Strip parameters are a=3 mm, f1 =120 degrees, 2w=0.1 mm, f2 =0. Array periods
are identical and are 10 mm long, substrate permittivity is 2 and substrate thickness equals
to 1.5 mm.
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Reference
Prosvirnin S.L., Transformation of polarization when
waves are reflected by a microstrip array made of complex-shaped elements, Journal
of Communications Technology and Electronics, 1999, vol. 44, no. 6, p.
635-639.
Russian version:
Просвирнин
С.Л., Преобразование
поляризации
при
отражении
волн
микрополосковой
решеткой из
элементов сложной
формы, Радиотехника
и
электроника,
1999, т.44, 6, 681-686
