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Multi-pole multi-zero frequency-independent phase-shifter

Multi-pole multi-zero frequency-independent phase-shifter

Review of Scientific Instruments 83(11): 114703

A multi-pole, multi-zero design allowed realizing a "true" phase-shifter (not time-delayer) of flat frequency-response over more than three decades (30 Hz-100 kHz), which can be extended to higher frequencies or broader bands thanks to a modular design. Frequency-dependent optimization of a single resistance made also the gain flat to within few percents. The frequency-independent phase-shifter presented can find application in any experiment in which an action needs to be taken (e.g., a measurement needs to be performed) at a fixed phase-delay relative to an event, regardless of how rapidly the system rotates or oscillates.

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Accession: 054484785

Download citation: RISBibTeXText

PMID: 23206081

DOI: 10.1063/1.4767240

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