Study on closed loop frequency tracking circuit of resonant infrared sensor

Yao Yao; Xia Zhang

doi:10.1117/12.2607101

24 November 2021 Study on closed loop frequency tracking circuit of resonant infrared sensor

Yao Yao, Xia Zhang

Proceedings Volume 12061, AOPC 2021: Infrared Device and Infrared Technology; 120611T (2021) https://doi.org/10.1117/12.2607101
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

A kind of frequency tracking circuit based on phase-locked loop (PLL) is studied for the resonant infrared sensor in the paper. The operating principle of the PLL is analyzed. 74HC4046 as the core component of the circuit is selected; starting the lock circuit is researched; a closed-loop frequency tracking circuit based on 74HC4046 is built. Software simulation proves that the frequency tracking of the circuit can achieve the order of MHz and has good frequency stability and tracking performance, which lays a foundation for the construction of the follow-up resonant sensor excitation/detection circuit.

Citation Download Citation

Yao Yao and Xia Zhang "Study on closed loop frequency tracking circuit of resonant infrared sensor", Proc. SPIE 12061, AOPC 2021: Infrared Device and Infrared Technology, 120611T (24 November 2021); https://doi.org/10.1117/12.2607101

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available