@article {698, title = {A novel interface circuit for grounded capacitive sensors with feedforward-based active shielding}, journal = {Measurement Science and Technology}, volume = {19}, year = {2008}, month = {02/2008}, pages = {025202}, issn = {1361-6501}, doi = {10.1088/0957-0233/19/2/025202}, author = {Reverter, Ferran and Li, Xiujun and Meijer, Gerard C M} }