Related Experiment Video
Updated: Jan 22, 2026

Real-Time Proxy-Control of Re-Parameterized Peripheral Signals using a Close-Loop Interface
Published on: May 8, 2021
Real-time digital signal recovery for sensors and amplifiers with resonant characteristics
1Center for Artificial Low Dimensional Electronic Systems, Institute for Basic Science (IBS), Pohang 37673, South Korea and Department of Physics, Korea Advanced Institute of Science and Technology, Daejeon 34141, South Korea.
Abstract:
A digital signal processing (DSP)-based real-time signal recovery method suitable for a real-valued processing core is presented with a goal of compensating for all the anomalies due to the resonant behaviors of a linear low pass system with complex poles, such as geophone sensors and piezoelectric acceleration sensors. The recovery method is DC-accurate and effectively flattens the frequency response curves up to an adjustable frequency limit of ∼O(0.1/Ts) (Ts is the sampling period of the DSP system) which can be well beyond the conventional cut-off or resonance frequencies of the system. The method can also filter out transient signals due to arbitrary initial conditions and strong resonance. A detailed method to enhance the signal-to-noise ratio is proposed and tested with a set of time-domain and frequency-domain analyses, demonstrating its effectiveness in various parameter conditions.
Related Concept Videos
Amplifying Signals via Second Messengers
Amplifying Signals via Enzymatic Cascade
Small-Signal Analysis of BJT Amplifiers
Small-Signal Analysis of MOSFET Amplifiers
Concept of Resonance and its Characteristics
Characteristics of Series Resonant Circuit

