Skip to Main content Skip to Navigation

Design of low noise pH-ISFET microsensors and integrated suspended inductors with increased quality

Abstract : The main effort of the first part of this thesis is concentrated on the pH-ISFET development in a low-cost, unmodified 0.6um CMOS technology (AMS). The research includes feasibility study, design, fabrication, and full pH characterization. One of the main aspects
in the sensor's reliability is the ISFET encapsulation. Several of novel designed ISFET structures are functional and show promising results. Noise contribution of commercial ISFETs, as well as of our
new designed pH-sensors, is studied and measured. At the end of the first part, two designed ISFET sensor interfaces are presented. The aim of the second part of this thesis is the investigation of high-Q planar spiral inductors for RF analogue applications in biomedical microsystems. Our research present studies,
calculations and design of on-chip micromachined spiral inductors developed in 0.8um CMOS technology (AMS). Proposed innovative design architecture maximizes quality factor Q. Suspended inductors can be placed vertically above the substrate, thus, parasitic substrate effects are considerably reduced. Designed passive
inductors have values from 1nH to 7nH. The Q-factor greater than tenis estimated from calculations, and it is experimentally verified byS-parameter measurements.
Complete list of metadatas
Contributor : Lucie Torella <>
Submitted on : Friday, July 4, 2003 - 9:23:01 AM
Last modification on : Friday, December 11, 2020 - 8:28:03 AM
Long-term archiving on: : Friday, April 2, 2010 - 7:19:25 PM


  • HAL Id : tel-00003085, version 1




B. Palan. Design of low noise pH-ISFET microsensors and integrated suspended inductors with increased quality. Micro and nanotechnologies/Microelectronics. Institut National Polytechnique de Grenoble - INPG, 2002. English. ⟨tel-00003085⟩



Record views


Files downloads