A highly linear fast-settling envelope detector

Juan Pablo Alegre; Santiago Celma; Jose María García del Pozo; Pedro Martínez

doi:10.1117/12.724037

10 May 2007 A highly linear fast-settling envelope detector

Juan Pablo Alegre, Santiago Celma, Jose María García del Pozo, Pedro Martínez

Proceedings Volume 6590, VLSI Circuits and Systems III; 659017 (2007) https://doi.org/10.1117/12.724037
Event: Microtechnologies for the New Millennium, 2007, Maspalomas, Gran Canaria, Spain

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.

Citation Download Citation

Juan Pablo Alegre, Santiago Celma, Jose María García del Pozo, and Pedro Martínez "A highly linear fast-settling envelope detector", Proc. SPIE 6590, VLSI Circuits and Systems III, 659017 (10 May 2007); https://doi.org/10.1117/12.724037

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