Open AccessA Waveform Conversion Circuit Design Used for Square Wave to Sine Wave
Author(s) -
Mingqi Yang,
Lixin Li,
Shubin Yan,
Xiushan Wu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1626/1/012001
Subject(s) - waveform , ripple , sine wave , rectangle , filter (signal processing) , band pass filter , m derived filter , low pass filter , acoustics , band stop filter , physics , prototype filter , transition band , square wave , optics , mathematics , engineering , electrical engineering , geometry , voltage , quantum mechanics
As an efficient passive filter, elliptical filter can be used in the waveform conversion module of closed-loop self-excitation circuit based on infrared detectors with steep transition band. In this article, the elliptical filter is designed and used to transform rectangle wave to sine wave by the Advanced Design System (ADS) 2015. After setting the parameters and calculation, the elliptical low-pass filter of seventh-order whose pass band is 0-10.2kHz, ripple in the band is less than 0.3dB and signal suppression is 42.8dB with two notch points. Through the comparison with the fifth-order and seventh-order elliptical low-pass filters, the relationship between the orders is understood, and the requirement of waveform transformation is realized.