A method of determing the emission and susceptibility of levels of electrically small objects using a TEM cell
Abstract
A theory is discussed which proposes that an electrically small radiating source of arbitrary shape may, to a first order, be modeled by an equivalent dipole system consisting of three orthogonal electric dipoles and three orthogonal magnetic dipoles each excited with arbitrary amplitude and phase. A method of accounting for the first-order variation in the transverse electromagnetic modal field distribution is presented. This involves the inclusion of electric quadrupole terms in the modeling of the test object. Using the reciprocity principle, the same method is extended to the determination of susceptibility levels of electrically small test objects. Some experimental results for the susceptibility test, demonstrating the importance of the quadrupole terms, are presented.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- April 1981
- Bibcode:
- 1981STIN...8133421S
- Keywords:
-
- Electromagnetic Wave Transmission;
- Emission;
- Permeability;
- Transmission Lines;
- Electric Dipoles;
- Electric Moments;
- Magnetic Dipoles;
- Quadrupoles;
- Electronics and Electrical Engineering