Assessment of TEM Cells for Whole Aircraft EMV Testing
Abstract
Transverse Electromagnetic (TEM) cells offer one solution to the problem of electromagnetic vulnerability (EMV) testing of whole vehicles at lower frequencies. Combined with a reverberation chamber (RC) TEM cells offer an attractive solution to a EMV testing facility which could operate in the frequency range of 10 kHz to 18 GHz. In order to move toward a hybrid RC/TEM facility the non-uniform transition region between TEM and RC operation (i.e. 17 MHz to 30 MHz) must be addressed. This report discusses computational electromagnetics (CEM) modelling used to characterize the DSTO scale TEM cell. The cell was built with the aim of integrating a full scale version into the DSTO RC. The CEM model of the TEM cell was validated using measurements, which showed good agreement. It was then assessed for applicability for aircraft EMV testing by comparing a simulated aircraft in the cell against an aircraft on an Open Area Test Site (OATS) and in free space. The work highlighted the need for resonance suppression in the transition region. We introduce a novel way of active resonance suppression and demonstrate its effectiveness when applied to the first TE resonance. Finally the feasibility of integrating a TEM cell into the DSTO RC is discussed including costs for major items
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2007
- Accession Number
- ADA471568
Entities
People
- Andrew J. Walters
- Chris Leat
Organizations
- Defence Science and Technology Group