Title :
Effects of Dipole Length on Dosimetric Probe Sensitivity
Author :
Tran, Alain ; Yagoub, Mustapha C E
Author_Institution :
Sch. of Inf. Technol. & Eng., Ottawa Univ., Ont.
Abstract :
Accurate measurements of electromagnetic radiation effects on human body require the use of very sensitive and highly miniaturized dosimetric probes with electrically-small dipole-sensors to improve spatial scanning resolution. In this paper, the authors investigate the effect of decreasing the size of the dipole-sensors on the sensor sensitivity, as well as the effect of varying the relative-permittivity of the substrate and the probe-shell. Numerical simulations of various dipole-sensor lengths, substrate and shell relative-permittivity, have been performed using the finite-element-method. Results show that the dipole-sensors length is inversely proportional to the probe gain-magnitude; and it is preferable to use substrates with relative-permittivity as small as possible
Keywords :
biological effects of fields; dosimetry; finite element analysis; permittivity; probes; sensitivity analysis; SAR; dipole length effects; dosimetric probe sensitivity; electrically-small dipole-sensor; electromagnetic radiation effects; finite-element-method; human body; radiofrequency exposure; relative-permittivity; spatial scanning resolution; Capacitance; Cutoff frequency; Diodes; Finite element methods; Numerical simulation; Probes; Radio frequency; Sensor arrays; Spatial resolution; Voltage; Dosimetry; FEM; SAR; dipole-sensor; radio frequency exposure;
Conference_Titel :
Electrical and Computer Engineering, 2006. CCECE '06. Canadian Conference on
Conference_Location :
Ottawa, Ont.
Print_ISBN :
1-4244-0038-4
Electronic_ISBN :
1-4244-0038-4
DOI :
10.1109/CCECE.2006.277653