| Research Article: | Shadow Bandpass Filter with Q-improvement |
| Author: | Wipavan Narksarp, Seangrawee Buakaew, Chariya Wongtaychatham |
| Email: | Seangrawee.to@kmitl.ac.th |
| สาขาวิชา/คณะ: | Department of Electrical Engineering, Faculty of Engineering, Siam University. |
| Department/Faculty: | Faculty of Electrical Engineering, Siam University, Bangkok 10160 |
| Published: | The 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST 2019) 2-5 July 2019, Luang Prabang, LAOS: King Mongkut’s Institute of Technology Ladkrabang, National University of Laos, Souphanouvong University |
Citation
Wipavan Narksarp, Seangrawee Buakaew & Chariya Wongtaychatham. (2019). Shadow Bandpass Filter with Q-improvement. In The 5th International Conference on Engineering, Applied Sciences and Technology (ICEAST 2019) (p.482-485). Luang Prabang, LAOS: King Mongkut’s Institute of Technology Ladkrabang, National University of Laos, Souphanouvong University.
ABSTRACT
A new architecture of the shadow bandpass filters with the quality factor improvement is proposed. The presented idea employs external amplifiers cooperating with the classical biquad cell resulting in convenient electronic tunability of the characteristic frequency and the quality factor. The scheme obtains the benefit of the quality factor–improvement via feedback gains of the external amplifiers. The theory is verified by PSPICE simulation using 0.18 μm CMOS technology model parameters.
Keywords—High quality factor, VDTA, shadow filter.
Shadow Bandpass Filter with Q-improvement
Faculty of Engineering, Siam University, Bangkok, Thailand