Title :
Nonradiating and minimum energy sources and their fields: generalized source inversion theory and applications
Author :
Marengo, Edwin A. ; Ziolkowski, Richard W.
Author_Institution :
Dept. of Electr. & Comput. Eng., Arizona Univ., Tucson, AZ, USA
fDate :
10/1/2000 12:00:00 AM
Abstract :
A new general framework for characterizing scalar and electromagnetic (EM) nonradiating (NR) and minimum energy (ME) sources and their fields is developed that is of interest for both radiation and source reconstruction problems. NR sources are characterized in connection with the concept of reciprocity as nonreceptors. Localized ME sources are shown to be free fields truncated within the source´s support. A new source analysis tool is developed that is based on the decomposition of a source and its field into their radiating and NR components. The individual radiating and reactive energy roles of the radiating and NR parts of a source are characterized. The general theory is illustrated with a time-harmonic EM example
Keywords :
electromagnetic fields; electromagnetic wave propagation; electromagnetic wave scattering; inverse problems; partial differential equations; signal reconstruction; EM fileds; EM nonradiating energy source; EM wave scattering; free fields truncated source; generalized source inversion theory; inverse scattering; minimum energy source; nonreceptors; partial differential equation; radiation reconstruction; reactive energy; reciprocity; scalar energy sources; source analysis tool; source decomposition; source reconstruction; time-harmonic EM source; Boundary conditions; Cities and towns; Electromagnetic fields; Electromagnetic radiation; Electromagnetic transients; Hilbert space; Inverse problems; Military computing; Nonuniform electric fields; Physics computing;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
