Title :
Behavioral modeling and simulation of a chemical sensor with its microelectronics front-end interface
Author :
Cenni, Fabio ; Mir, Salvador ; Rufer, Libor
Author_Institution :
TIMA Lab., CNRS-Grenoble INP-UJF, Grenoble, France
Abstract :
A surface acoustic wave (SAW) device is used in this work as the sensing element for a chemical sensor that will be embedded in a wireless sensor node. The SAW device is intended to detect the concentration of gaseous mercury in the environment. Two behavioral models of the SAW device have been studied. The microelectronics front-end architecture has been designed at transistor level in a 0.35 mum CMOS technology. The SAW device is embedded in a phase-locked loop (PLL) that converts the change of concentration of gaseous mercury into a shift of the loop frequency. Finally, the simulation of the overall sensor has been carried out considering a model of the SAW device described in the Hardware Description Language Verilog-A.
Keywords :
CMOS integrated circuits; distributed sensors; gas sensors; hardware description languages; mercury (metal); phase locked loops; surface acoustic wave sensors; CMOS technology; PLL; SAW device; behavioral modeling; chemical sensor; gaseous mercury concentration; hardware description language Verilog-A; microelectronics front-end interface; phase-locked loop; size 0.35 mum; surface acoustic wave device; wireless sensor node; Acoustic waves; CMOS technology; Chemical elements; Chemical sensors; Hardware design languages; Microelectronics; Phase locked loops; Semiconductor device modeling; Surface acoustic wave devices; Surface acoustic waves;
Conference_Titel :
Advances in sensors and Interfaces, 2009. IWASI 2009. 3rd International Workshop on
Conference_Location :
Trani
Print_ISBN :
978-1-4244-4708-4
Electronic_ISBN :
978-1-4244-4709-1
DOI :
10.1109/IWASI.2009.5184776
