Abstract
This paper develops a new reconstruction technique of undesirable signal distortion generated by sensor electronic circuits. The introduced reconstruction technique is originally realized with unfamiliar low-pass negative group delay (NGD) function. The feasibility condition of the proposed reconstruction technique in function of the sensor signal spectrum bandwidth under consideration is elaborated. The reconstruction technique principle is theoretically introduced by means of identification of low-pass NGD function parameters and the appropriated circuit topology. The unfamiliar low-pass NGD function analysis and synthesis equations are established. As an example, for the feasibility study, an RC-network based low-pass active cell is considered to implement the low-pass NGD function. A design method of NGD circuit in function of the sensor distortion transfer function is described in different successive steps. The developed NGD reconstruction technique is validated by different proofs of concept. First, transient simulations are carried out with Gaussian and sinc analytical signals. Then, experimental feasibility study is also performed with arbitrary waveform signal. As expected, the NGD reconstruction technique efficiency is confirmed with improvement of distorted signal integrity parameters and cross correlation better than 97%.
Highlights
In twenty first century, behind the industrial and medical engineering revolutions, new generation of smart sensors is deployed [1]–[5]
In order to answer to constantly asked open questions from electronic, embedded system, industrial sensor and communication system design engineers about the usefulness and applications of low-pass negative group delay (NGD) function for the sensor circuit design, the present paper develops an easy to understand and potentially useful application of low-pass NGD function for arbitrary signal distortion correction technique
An innovative reconstruction technique of signal distortion effect integrated in the sensors is developed
Summary
Behind the industrial and medical engineering revolutions, new generation of smart sensors is deployed [1]–[5]. The feasibility of NGD function-based reconstruction technique of distorted signal can be experimented with different types of equivalent circuit model-based degradations as introduced in [25]–[27]. The feasibility of the distorted signal NGD reconstruction technique is initiated in the present paper. In order to answer to constantly asked open questions from electronic, embedded system, industrial sensor and communication system design engineers about the usefulness and applications of low-pass NGD function for the sensor circuit design, the present paper develops an easy to understand and potentially useful application of low-pass NGD function for arbitrary signal distortion correction technique.
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