Fast-response low-ripple envelope follower

A novel envelope detector structure is proposed in this paper that overcomes the traditional trade-off required in these circuits. It improves both the tracking and keeping of the signal and thereby obtains great savings of capacitor area. At the same time, it cancels nonlinearities due to the use o...

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Bibliographic Details
Published in:Integration (Amsterdam) 2009-02, Vol.42 (2), p.169-174
Main Authors: Alegre, J.P., Celma, S., García del Pozo, J.M., Medrano, N.
Format: Article
Language:English
Subjects:
Applied sciences
Circuit properties
Circuits of signal characteristics conditioning (including delay circuits)
Dielectric, amorphous and glass solid devices
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Envelope detection
Exact sciences and technology
Nonlinear detection
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Signal detection
Signal processing
Switching, multiplexing, switched capacity circuits
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Summary:A novel envelope detector structure is proposed in this paper that overcomes the traditional trade-off required in these circuits. It improves both the tracking and keeping of the signal and thereby obtains great savings of capacitor area. At the same time, it cancels nonlinearities due to the use of switches when this technique is employed, such as nonlinearities caused by charge injection and, tenders high performance with small ripple (
ISSN:0167-9260
1872-7522
DOI:10.1016/j.vlsi.2008.05.001