Conference paper
Complex-point dipole formulation of probe-corrected spherical near-field scanning of electromagnetic fields using symmetric higher-order probes
A computationally efficient probe-corrected electromagnetic theory is presented for computing the field of an arbitrary source of finite extent (test antenna) from measurements with a known symmetric probe on a surrounding spherical surface. The new theory, which can deal with higher-order probes, has exactly the same computational complexity as the standard theory, which can deal only with first-order probes.
By representing the probe with complex-point dipoles, the new theory avoids the use of translation and rotation theorems as well as differential operators. The disadvantage of the new theory is that it requires the use of nonlinear optimization to determine the probe model. Numerical validation is achieved through an example involving a complicated source measured with a square waveguide probe.
Language: | English |
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Publisher: | Loughborough University |
Year: | 2009 |
Pages: | 249-252 |
Proceedings: | Loughborough Antennas and Propagation Conference |
ISBN: | 1424427207 , 1424427215 , 9781424427208 and 9781424427215 |
Types: | Conference paper |
DOI: | 10.1109/LAPC.2009.5352585 |
ORCIDs: | Breinbjerg, Olav |
Antenna measurements Antenna theory Antennas and propagation Dipole antennas Electromagnetic fields Electromagnetic measurements Electromagnetic propagation Frequency Probes Testing complex point dipole formulation differential operators dipole antennas electromagnetic theory nonlinear optimization optimisation spherical surfaces square waveguide probe test antenna waveguide antennas