title: Towards a highly-scalable wireless implantable system-on-a-chip for gastric electrophysiology.
abstract: This paper presents the system design of a highly-scalable system-on-a-chip (SoC) to wirelessly and chronically detect the mechanisms underlying gastric dysrhythmias. The proposed wireless implantable gastric-wave recording (WIGR) SoC records gastric slow-wave and spike activities from 256 sites, and establishes transcutaneous data communication with an external reader while being inductively powered. The SoC is highly scalable by employing a modular architecture for the analog front-end (AFE), a near-field pulse-delay modulation (PDM) data transmitter (Tx) that its data rate is proportional to the power carrier frequency (fp), and an adaptive power management equipped with automatic-resonance tuning (ART) that dynamically compensates for environmental and fp variations of the implant power coil. The simulation and measurement results for individual blocks have been presented.
authors.forename: Ahmed
authors.initials: A
authors.lastname: Ibrahim
authors.forename: Aydin
authors.initials: A
authors.lastname: Farajidavar
authors.forename: Mehdi
authors.initials: M
authors.lastname: Kiani
mesh_terms: D000669:Amplifiers, Electronic; D055724:Electrophysiological Phenomena; D004867:Equipment Design; D019736:Prostheses and Implants; D013686:Telemetry; D059015:Wireless Technology