A significant resonance shift is found in both reflection and transmission coefficients from both parallel and perpendicular excitations in a helical structure. The responses from the perpendicular excitation show better sensitivity than those from the parallel excitation at 480 MHz-560 MHz for 0.2 circumference difference. Additional electromagnetic properties of a helical structure, such as chirality, optical rotatory dispersion and circular dichroism can also further combine to enhance the sensing performance.
Wongkasem, N., Sonsilphong, A., & Gonzalez, M. (1). Chiral metamaterial-based microwave sensors. Engineering and Applied Science Research, 44(3), 178-181. Retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/97557
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Engineering and Applied Science Research