Frequency insensitive phase detector with fast response and very low output ripple

Author

Vyroubal, Darko

Author_Institution

Polytech.. of Karlovac, Croatia

Volume

49

Issue

5

fYear

2000

fDate

10/1/2000 12:00:00 AM

Firstpage

1077

Lastpage

1082

Abstract

The new phase detector circuit has fast response and almost no output ripple, approaching to the speed and ripple of the sample-hold (S/H) type detectors, while being insensitive to signal frequency as is the case with a class of “multiply and integrate” circuits. The new detector is based on simple high-pass filtration and S/H processing of the discrete signal generated in the digital part of the circuit. The response of the new phase detector is more than a hundred times faster than the response of the “multiply and integrate” class of detectors exhibiting the same output ripple. With a slight modification, the circuit can be turned into a fast frequency-to-voltage converter (FVC) with a ripple-free output

Keywords

high-pass filters; network analysis; phase detectors; sample and hold circuits; signal processing equipment; detectors; discrete signal; fast response; frequency insensitive phase detector; frequency-to-voltage converter; high-pass filtration; low output ripple; multiply and integrate circuits; output ripple; ripple-free output; sample-hold detectors; signal frequency; Circuits; Filtration; Linearity; Low pass filters; Phase detection; Phase frequency detector; Phase locked loops; Phase measurement; Sampling methods; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.872933

Filename

872933