Title :
Simple non-invasive measurement of complex permittivity
Author :
Johnson, Robert H. ; Pothecary, N.M. ; Robinson, M.P. ; Preece, A.W. ; Railton, Chris J.
Author_Institution :
Bristol Oncology Centre, UK
fDate :
7/22/1993 12:00:00 AM
Abstract :
A simple non-invasive sensor measures complex permittivity at microwave (UHF) frequencies from changes in resonance frequency and reflection coefficient. Response to reference liquids is in good agreement with finite difference time-domain calculation. The sensor is intended for detection and characterisation of breast tumours but has wider applications.
Keywords :
biomedical electronics; biomedical equipment; biomedical measurement; electric sensing devices; microwave measurement; patient diagnosis; permittivity measurement; resonance; 500 MHz; UHF; breast tumours; complex permittivity; dielectric constant; non-invasive measurement; noninvasive sensor; reflection coefficient; resonance frequency; resonant current sheet sensor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930911
