A wireless RF CMOS interface for a soil moisture sensor

This paper describes a wireless RF CMOS interface for a soil moisture sensor. The mixedsignal interface is based on a 2ndorder switched capacitor, fully differential sigma-delta modulator with an effective resolution of 17-bit. The modulator bit stream output is applied to a counter as a first order...

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Bibliographic Details
Main Author: Morais, Raul (author)
Other Authors: Valente, A. (author), Couto, Carlos (author), Correia, J. H. (author)
Format: conferencePaper
Language:eng
Published: 2003
Subjects:
Online Access:http://hdl.handle.net/1822/4834
Country:Portugal
Oai:oai:repositorium.sdum.uminho.pt:1822/4834