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Magnetic Flux Sensor For Hearing And Application, Crystal R. Kenney

Electronic Theses and Dissertations

A 3-D microelectronic inductor has been fabricated and characterized for use as a magnetic flux sensor, also known as a telecoil, for a hearing aid application. This telecoil was fabricated in a 0.5pm CMOS process with three metal layers. The 3-D structure is more space efficient than conventional spiral inductors and allows for an optimal number of turns for the space available. The telecoil has an inductance of 80pH, a resistance of 34kR, and a capacitance of 275pF. The integrated telecoil acts as a magnetic flux sensor by picking up the magnetic signal fiom the phone speaker. The integrated telecoil …