title: RF performance of a 418-MHz radio telemeter packaged for human vaginal placement.
abstract: The electrical and communication performance of a 0.8-microW UHF temperature telemeter designed for human vaginal placement is discussed; a solenoidal loop antenna was used, occupying a volume of 0.1 cm3. In situ, measured power absorption was between 19-25 dB, resulting in an effective operating range of 10 m. Capacitive loading lowered the antenna's resonant frequency by 1.4% and there was a significant polarization change in the radiated output.
authors.affiliation: Northern Ireland Bioengineering Center and School of Electrical and Mechanical Engineering, University of Ulster at Jordanstown, Newtownabbey, Northern Ireland.
authors.forename: W G
authors.initials: WG
authors.lastname: Scanlon
authors.forename: N E
authors.initials: NE
authors.lastname: Evans
authors.forename: Z M
authors.initials: ZM
authors.lastname: McCreesh
mesh_terms: D004553:Electric Conductivity; D004867:Equipment Design; D005260:Female; D006801:Humans; D008991:Monitoring, Physiologic / Q000295:instrumentation; D011187:Posture; D019736:Prostheses and Implants; D013686:Telemetry; D013821:Thermometers; D014621:Vagina / Q000502:physiology*