Vector spherical harmonic analysis and experimental validation of spherical shells illuminated with broadband, millimeter wave Gaussian beams: applications to …

F Zarrinkhat, J Lamberg, A Tamminen… - Biomedical optics …, 2022 - opg.optica.org
Coupling to longitudinal modes of thin spherical shells, under Gaussian-beam illumination,
was explored with a theoretical method based on Fourier-optics analysis and vector …

Calibration alignment sensitivity in corneal terahertz imaging

F Zarrinkhat, M Baggio, J Lamberg, A Tamminen… - Sensors, 2022 - mdpi.com
Improving the longitudinal modes coupling in layered spherical structure contributes
significantly to corneal terahertz sensing, which plays a crucial role in the early diagnosis of …

185–215 GHz CMOS Frequency Doubler with a Single Row Staggered Distribution Layout Design

R Dong, C You - Electronics, 2023 - mdpi.com
This paper presents a 220 GHz× 2 amplifier–doubler chain composed of a rat-race balun, a
6-stage driver amplifier, and a frequency doubler. The presented amplifier–doubler chain …