Working principle description of the wireless passive EM transduction pressure sensor M.M. Jatlaoui, F. Chebila, P. Pons and H. Aubert Eur. Phys. J. Appl. Phys., 56 1 (2011) 13702 Published online: 28 September 2011 DOI: 10.1051/epjap/2011100220