Title :
Formulation of spherical near-field scanning for electromagnetic fields in the time domain
Author :
Hansen, Thorkild B.
Author_Institution :
Rome Lab., ERCS, Hanscom AFB, MA, USA
fDate :
4/1/1997 12:00:00 AM
Abstract :
Spherical near-field scanning techniques are formulated for electromagnetic fields in the time domain so that a single set of time-domain near-field measurements yields the far field in the time domain or over a wide range of frequencies. Probe-corrected as well as nonprobe-corrected formulations are presented. For bandlimited time-domain fields, sampling theorems and computation schemes are derived that give the field outside the scan sphere in terms of sampled near-field data
Keywords :
antenna radiation patterns; antenna testing; electric field measurement; electromagnetic fields; magnetic field measurement; probes; signal sampling; time-domain analysis; EM wave scattering; antennas; bandlimited time-domain fields; computation schemes; electromagnetic fields; nonprobe corrected formulations; probe corrected formulations; sampled near-field data; sampling theorems; spherical near-field scanning; time-domain near-field measurements; Antenna measurements; Broadband antennas; Electromagnetic fields; Electromagnetic scattering; Frequency; Probes; Radar antennas; Radar scattering; Time domain analysis; Time measurement;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
