Accurate Determination of the Complex Permittivity of Biological Tissue at 90 GHz, 70 GHz, and over a Broad Band around 35 GHz
Interim rept. Oct 1987-May 1988
KING'S COLL LONDON (UNITED KINGDOM) DEPT OF PHYSICS
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The design of a new experimental system to measure the complex permittivity of liquids and solid tissues at 90 GHz is considered. A circuit diagram is presented, and an experimental cell sample holder of circular cross section is described. A numerical method which would enable alternative designs of cell to be considered, is presented. A broad-band system to measure complex permittivity around 35 GHz has been designed, and we confidently believe this equipment can be set up to cover the full bandwidth of 26 to 40 GHz. Keywords Radiation effects Complex permittivity Solid tissues Microwaves 26-40 GHz and 90 GHz.
- Electricity and Magnetism
- Radiofrequency Wave Propagation