An asymmetric RF tagging IC for ingestible medication compliance capsules

Author

Yu, Hong ; Tang, Chun-Ming ; Bashirullah, Rizwan

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Florida, Gainesville, FL, USA

fYear

2009

fDate

7-9 June 2009

Firstpage

101

Lastpage

104

Abstract

This paper presents a feasibility study of a low power electronic RF tagging device and a printed capsule antenna for medication compliance monitoring. RF transponders attached directly to the outer surface of a standard sized capsule can potentially serve as a cost-effective method of validating medication compliance via electronic detection of an ingested pill inside the digestive tract. The electrical radiation characteristics of a small biocompatible antenna are analyzed inside a human body model for various FCC telemetry bands using the finite difference time domain (FDTD) method. Based on this study, a novel asymmetric RF tagging IC is reported. The device is powered by low frequency AC signals to create externally detectable RF bursts in the 915 MHz ISM band. A test chip was fabricated in 130 nm CMOS technology and experimentally validated inside a phantom solution that mimics the human torso.

Keywords

CMOS integrated circuits; UHF antennas; UHF integrated circuits; biomedical telemetry; drug delivery systems; finite difference time-domain analysis; microstrip antennas; radiofrequency identification; transponders; CMOS technology; FCC telemetry bands; RF transponders; asymmetric RF tagging IC; biocompatible antenna; finite difference time domain method; frequency 915 MHz; human torso; ingestible medication compliance capsules; low frequency AC signals; low power electronic RF tagging device; phantom solution; printed capsule antenna; size 130 nm; test chip; CMOS technology; Finite difference methods; Humans; Low power electronics; Monitoring; Radio frequency; Radiofrequency integrated circuits; Tagging; Time domain analysis; Transponders; Medication compliance; RFID; Telemetry;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE

Conference_Location

Boston, MA

ISSN

1529-2517

Print_ISBN

978-1-4244-3377-3

Electronic_ISBN

1529-2517

Type

conf

DOI

10.1109/RFIC.2009.5135499

Filename

5135499