Development and application of electromagnetic field excitation models for dosimetry studies in the THz range

• Published in: 9th IET International Conference on Computation in Electromagnetics (CEM 2014) p. 5.05
• Main Authors: Zang, M, Hansen, V, Pfeiffer, U, Spathmann, O, Statnikov, K
• Format: Conference Proceeding
• Language: English
• Published: Stevenage, UK IET 2014; The Institution of Engineering & Technology
• Subjects: Radiation dosimetry in medical physics; Radiation protection and dosimetry; SAR determination; terahertz waves; temperature distribution; dosimetry; electromagnetic field excitation model; THz range dosimetry; Gaussian excitation; high resolution human partial body models; TEM waveguide
• ISBN: 1849198179; 9781849198172
• DOI: 10.1049/cp.2014.0234

The determination of the field, SAR and temperature distributions in individuals exposed to an electromagnetic field at terahertz frequencies requires the solution of a corresponding boundary value problem. For this purpose, in addition to high-resolution human partial-body models, also models for different exposure fields are required. The fields of many electromagnetic sources can be locally approximated by a uniform excitation model, which allows to generate field patterns of e.g. patch antennas or an open end of a TEM waveguide. On the other hand, there are sources emitting beams, which can be better described by a Gaussian excitation. The development of such excitation models for the appropriate representation of the output fields of terahertz sources will be discussed in this paper.