TSAR modeling of a TEM horn and surrounding structure
Modeling of a TEM horn was performed with the TSAR FDTD electromagnetics code. The modeling was done in stages, beginning with the simplest case, the bare antenna itself. Complexity was added in the form of a dielectric lens, an enclosing cylinder, a layer of absorber inside the cylinder, resistive terminations between the horn and cylinder, and a flat plate over all, electrically separate from the cylinder. The final configuration included all of the above, plus a ring of ferrite inside the cylinder, just ahead of the horn. Predictions of the far-field were made at roughly ten degree increments, more closely spaced near boresight, in both vertical and horizontal planes, through the antenna`s centerline. Time histories at those points were evaluated, and from the time histories power densities were calculated. Both time histories and power densities will be presented for the configurations modeled.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 10145554
- Report Number(s):
- UCRL-ID-115730; ON: DE94010668
- Resource Relation:
- Other Information: PBD: Nov 1993
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GENERAL PHYSICS
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ELECTROMAGNETIC FIELDS
FINITE DIFFERENCE METHOD
ANTENNAS
WAVE PROPAGATION
MESH GENERATION
POWER DENSITY
661300
990200
OTHER ASPECTS OF PHYSICAL SCIENCE
MATHEMATICS AND COMPUTERS