Fractional-Order Asymptotical Phase Shifter With Flat Magnitude Response
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This work deals with design of fractional-order asymptotical phase shifter having constant magnitude response within almost three decades (100 Hz – 100 kHz) and frequency dependent phase difference going from 0 to 45 degrees. PSpice simulations employing macromodels of off-the-shelf active parts brought the results suitable for brief analysis of the complete solution of our phase shifter in both frequency and time domain. Magnitude flatness with only ±0.3 dB variation and maximal phase error in the middle of operational bandwidth 3.7 degrees prove very good performance of designed circuit.
KeywordsAll-pass filter, constant phase element, fractional-order, phase shifter, variable gain amplifier
Document typePeer reviewed
SourceProceedings of the 2019 17th IEEE International New Circuits and Systems Conference (NEWCAS 2019). 2019, p. 1-4.