DocumentCode :
2692627
Title :
Algorithm for currents reconstruction using the FFT iterative method and a lattice of the spectrum
Author :
Sanchez-Escuderos, Daniel ; Baquero-Escudero, Mariano ; Vico-Bondia, Felipe ; Rodrigo-Penarrocha, Vicent-Miquel
Author_Institution :
Dept. de comunicaciones, Univ. Politecnica de Valencia
fYear :
2006
fDate :
9-14 July 2006
Firstpage :
1379
Lastpage :
1382
Abstract :
The knowledge of the equivalent currents of an antenna could become one of the most important aspects during its design process. This information can be obtained by knowing the currents obtained from the radiated field of the antenna. As this is usually measured in the near field region, is necessary to obtain a relationship between near field and equivalent currents. Basically, the process described in a previous paper obtains the far field from the near field measurements and with this far field calculates the plane wave spectrum. If this process is followed the maximum resolution achievable is 1 lambda. The reason for such a poor resolution is the use of only the visible spectrum. However, we need this non-visible spectrum to achieve a better resolution. For this reason we propose in this paper the combination of two techniques to obtain the non-visible spectrum. These techniques are the fft iterative method and the second technique is using the lattice of the spectrum to improve results. The use of both increases considerably the resolution of the reconstruction
Keywords :
antenna arrays; antenna radiation patterns; fast Fourier transforms; iterative methods; antenna equivalent currents; antenna radiated field; currents reconstruction; fft iterative method; near field region; nonvisible spectrum; plane wave spectrum; spectrum lattice; Algorithm design and analysis; Antenna measurements; Current measurement; Feeds; Frequency; Iterative algorithms; Iterative methods; Lattices; Microwave filters; Process design;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium 2006, IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
1-4244-0123-2
Type :
conf
DOI :
10.1109/APS.2006.1710804
Filename :
1710804
Link To Document :
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