Title :
Electrically short dipoles with a nonlinear load, a revisited analysis
Author :
Ladbury, John M. ; Camell, Dennis G.
Author_Institution :
Radio-Frequency Technol. Div., Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
2/1/2002 12:00:00 AM
Abstract :
We reexamine the characteristics of electrically short dipoles with nonlinear loads and, specifically, the early work of Motohisa Kanda (1980, 1983). Although this topic has been examined in great detail in the past, some inconsistencies between numerical and analytical results are apparent, and these have not been previously addressed. We show that these inconsistencies were due to only periodic sampling of the analytic solution, and an insufficient number of iterations in the numerical solutions, and we give corrected results. Additionally, some of the more significant analytical results, which were once thought to be impractical due to their complexity, are numerically implemented. We also show that a simple approximation accurately describes the behavior of these electrically short dipoles over a wide range of frequency and amplitude
Keywords :
dipole antennas; electric fields; equivalent circuits; load (electric); probes; Thevenin´s equivalent circuit; amplitude; electric field; electric-field probes; electrically short dipoles; frequency; nonlinear load; periodic sampling; Calibration; Counting circuits; Diodes; Low voltage; NIST; Performance analysis; Probes; Radio frequency; Radiofrequency identification; Sampling methods;
Journal_Title :
Electromagnetic Compatibility, IEEE Transactions on