Virote Pirajnanchai received a B.Eng. degree in electronics engineering from the Rajamangala University of Technology Thanyaburi, Thailand, in 1991, and the M.Eng. degrees in electrical engineering from the King Mongkut’s Institute of Technology Ladkrabang, Thailand, in 2005. He is working toward a D Eng degree with the School of Engineering, King Mongkut’s Institute of Technology Ladkrabang, he was a lecturer with the Department of Electronics and Telecommunications Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi (RMUTT). From 1999 to 2025, where he is currently an Assistant Professor. His research interests include analog and digital signal processing, high frequency analog filters design, and rf/microwave circuit applications.