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Proceedings Paper

A highly linear fast-settling envelope detector
Author(s): Juan Pablo Alegre; Santiago Celma; Jose María García del Pozo; Pedro Martínez
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Paper Abstract

A novel high performance envelope detector structure is proposed in this work. This circuit does not need the traditional compensation between keeping and tracking required in these circuits due to a system by what the signal peaks are held in two periods and combined to obtain the envelope of the signal. At the same time, it solves some drawbacks due to switches used in these kinds of circuits when this technique has been employed, such as nonlinearities due to charge injection in switches, which reduces the linearity of these circuits. Thus, it is shown the superior performance of this circuit obtaining for a signal at 10MHz small ripple (<1%), very fast settling (0.4&mgr;s) and using smaller capacitive area (-60%) than conventional peak detectors. Furthermore, this envelope detector has a dynamic range above 40dB for nonlinearities below 1dB.

Paper Details

Date Published: 10 May 2007
PDF: 9 pages
Proc. SPIE 6590, VLSI Circuits and Systems III, 659017 (10 May 2007); doi: 10.1117/12.724037
Show Author Affiliations
Juan Pablo Alegre, Univ. of Zaragoza (Spain)
Santiago Celma, Univ. of Zaragoza (Spain)
Jose María García del Pozo, Univ. of Zaragoza (Spain)
Pedro Martínez, Univ. of Zaragoza (Spain)


Published in SPIE Proceedings Vol. 6590:
VLSI Circuits and Systems III
Valentín de Armas Sosa; Kamran Eshraghian; Félix B. Tobajas, Editor(s)

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