Electromagnetic (EM) cavity resonance residual life indicator

This paper presents part of a joint venture between Dstl and LJMU. The purpose of this work is to investigate the interaction of electromagnetic (EM) waves within a resonant microwave cavity to sense and characterise filter materials for residual life indication. This paper looks at a single filter material, ASZM-TEDA activated carbon, which is commonly used for military applications where personnel are likely to come under attack from chemical agents. The paper briefly introduces activated carbon, discusses theory relevant to the work, the methodology used for investigation, and finally a selection of pertinent measurements taken using a bespoke microwave cavity resonator.