volume | PIER Journals

Abstract

A comparison between two recently developed methods for antenna diagnostics is presented. On one hand, the Spherical Wave Expansion-to-Plane Wave Expansion (SWE-PWE), based on the relationship between spherical and planar wave modes. On the other hand, the Sources Reconstruction Method (SRM), based on the application of the equivalence principle and the integral equations relating fields and sources. In order to compare the results provided by these methods, a reflector antenna has been measured and analyzed.

1. Ponnapalli, S., "Near-field to far-field transformation utilizing the conjugate gradient method," Progress In Electromagnetics Research, Vol. 5, 391-422, 1991. Google Scholar

2. Costanzo, S. and G. Di Massa, "Far-field reconstruction from phaseless near-field data on a cylindrical helix," Journal of Electromagnetic Waves and Applications, Vol. 18, No. 8, 1057-1071, 2004.
doi:10.1163/1569393042955414 Google Scholar

3. Koivisto, P., "Reduction of errors in antenna radiation patterns using optimally truncated spherical wave expansion," Progress In Electromagnetics Research, Vol. 47, 313-333, 2004.
doi:10.2528/PIER03120301 Google Scholar

4. Koivisto, P. and J. C.-E. Sten, "On the influence of incomplete radiation pattern data on the accuracy of a spherical wave expansion," Progress In Electromagnetics Research, Vol. 52, 185-204, 2005.
doi:10.2528/PIER04080902 Google Scholar

5. Ayestaran, R. G. and F. Las Heras, "Near field to far field transformation using neural networks and source reconstruction," Journal of Electromagnetic Waves and Applications, Vol. 20, 2201-2213, 2006.
doi:10.1163/156939306779322594 Google Scholar

6. Costanzo, S. and G. DiMassa, "Near-field to far-field transformation with planar spiral scanning," Progress In Electromagnetics Research, Vol. 73, 49-59, 2007.
doi:10.2528/PIER07031903 Google Scholar

7. Petre, P. and T. K. Sarkar, "Planar near-field to far-field transformation using an equivalent magnetic current approach," IEEE Transactions on Antennas and Propagation, Vol. 40, No. 11, 1348-1356, Nov. 1992.
doi:10.1109/8.202712 Google Scholar

8. Sarkar, T. K., P. Petre, A. Taaghol, and R. F. Harrington, "An alternative spherical near field to far field transformation," Progress In Electromagnetics Research, Vol. 16, 269-284, 1997.
doi:10.2528/PIER96060600 Google Scholar

9. Rahmat-Samii, Y., "Surface diagnosis of large reflector antennas using microwave holographic metrology: An iterative approach," Radio Science, Vol. 19, 1205-1217, 1984.
doi:10.1029/RS019i005p01205 Google Scholar

10. Cappellin, C., O. Breinbjerg, and A. Frandsen, "Properties of the transformation from the spherical wave expansion to the plane wave expansion ," Radio Science, Vol. 43, 2008. Google Scholar

11. Cappellin, C., A. Frandsen, and O. Breinbjerg, "Application of the SWE-to-PWE antenna diagnostics technique to an offset reflector antenna," AMTA 2007Symposium, 2007. Google Scholar

12. Petre, P. and T. K. Sarkar, "Differences between modal expansion and intergral equation methods for planar near-field to far-field transformation," Progress In Electromagnetics Research, Vol. 12, 37-56, 1996. Google Scholar

13. Las-Heras, F., M. R. Pino, S. Loredo, Y. Alvarez, and T. K. Sarkar, "Evaluating near field radiation patterns of commercial antennas," IEEE Transactions on Antennas and Propagation, Vol. 54, No. 8, 2198-2207, Aug. 2006.
doi:10.1109/TAP.2006.879190 Google Scholar

14. Alvarez, Y., F. Las-Heras, and M. R. Pino, "Reconstruction of equivalent currents distribution over arbitrary three-dimensional surfaces based on integral equation algorithms," IEEE Transactions on Antennas and Propagation, Vol. 55, No. 12, 3460-3468, Dec. 2007.
doi:10.1109/TAP.2007.910316 Google Scholar

15. Persson, K. and M. Gustafson, "Reconstruction of equivalent currents using a near-field data transformation — with radome application," Progress In Electromagnetics Research, Vol. 54, 179-198, 2005.
doi:10.2528/PIER04111602 Google Scholar

16. Kaplan, L., J. D. Hanfling, and G. V. Borgiotti, "The backward transform of the near field for reconstruction of aperture field," IEEE Antennas and Propagation Society Symposium Dig., 764-767, 1979. Google Scholar

17. Homepage of the DTU-ESA Facility: http://www.oersted.dtu.dk/English/research/emi/afg/dtu esa facility.aspx..

18. Hansen, J. E., Spherical Near-Field Antenna Measurements, Peter Peregrinus Ltd., 1988.

19. Roger, A. and F. Chapel, "Iterative methods for inverse problems," Progress In Electromagnetics Research, Vol. 5, 423-454, 1991. Google Scholar

20. Carpentieri, B., "Fast iterative solution methods in electroelectromagnetic," Progress In Electromagnetics Research, Vol. 79, 151-178, 2008.
doi:10.2528/PIER07100802 Google Scholar

Dr. Yuri Alvarez-Lopez

Dr. Cecilia Cappellin

Prof. Fernando Las Heras Andres

Dr. Olav Breinbjerg