Derivation of Loop Gain and Stability Test for Multiple Feedback Low-pass Filter Using Deboo Integrator
Tri Minh Tran, Anna Kuwana, Haruo Kobayashi
Abstract
A new stability test for a multiple feedback low pass filter using Deboo integrator is described. The loop gain of this filter is derived and analyzed based on the widened superposition principle. The voltage injection technique is used to measure this loop gain. Test results show that the feedback loops in this filter may cause damped oscillation noises when the stable conditions are not satisfied.
Topics & Concepts
IntegratorControl theory (sociology)Loop gainFilter (signal processing)Feedback loopLoop (graph theory)Superposition principleLow-pass filterStability (learning theory)All-pass filterOpen-loop gainOscillation (cell signaling)Minor loop feedbackMathematicsComputer scienceBand-stop filterVoltagePhysicsOperational amplifierBandwidth (computing)TelecommunicationsAmplifierMathematical analysisArtificial intelligenceCombinatoricsQuantum mechanicsMachine learningGeneticsControl (management)Computer securityComputer visionBiologyAdvanced Adaptive Filtering TechniquesControl Systems and IdentificationAdvanced Control Systems Design