Determination of probe receiving coefficients for near-field to far-field transformation

2009 ◽  
Vol 51 (12) ◽  
pp. 2826-2829
Author(s):  
D. Sánchez-Escuderos ◽  
M. Baquero-Escudero ◽  
B. Bernardo-Clemente ◽  
V. M. Rodrigo-Peñarrocha
Keyword(s):  
Near Field ◽  
Far Field ◽  
Field Transformation

scholarly journals Non-redundant Spherical Near-Field to Far-Field Transformation for a Volumetric Antenna in Offset Configuration

2019 ◽  
Vol 13 (1) ◽  
pp. 19-29 ◽  
Author(s):  
Francesco D’Agostino ◽  
Flaminio Ferrara ◽  
Claudio Gennarelli ◽  
Rocco Guerriero ◽  
Massimo Migliozzi
Keyword(s):  
Near Field ◽  
Measurement Techniques ◽  
Data Gathering ◽  
Experimental Tests ◽  
Precise Determination ◽  
Far Field ◽  
Interpolation Algorithm ◽  
Classical Technique ◽  
Field Transformation

Background: The development of fast Near-Field (NF) measurement techniques allowing the precise determination of the Far-Field (FF) radiation features of an antenna is becoming more and more challenging nowadays. Objective: The goal of the article is the development of an NF To FF Transformation (NFTFFT) with spherical scan for offset mounted volumetric Antennas Under Tests (AUTs) requiring, unlike the classical technique, a reduced set of NF data, that is of the same amount as for the onset mounting case, thus making data gathering faster. In fact, the number of NF data needed by the standard approach may considerably increase in this case, since the size of the smallest sphere surrounding the AUT and centered at the center of the measurement sphere rises. Methods: This goal has been achieved by profitably exploiting the non-redundant sampling representation of electromagnetic field and assuming a volumetric AUT as contained in a sphere. An optimal sampling interpolation algorithm is then employed to precisely reconstruct the input NF data for the traditional spherical NFTFFT from the reduced set of the collected ones. Conclusion: The numerical simulations and experimental tests demonstrate the effectiveness of the developed approach accounting for an offset mounting of the AUT.

Determination of geometric properties of SNOM tips by means of combined far-field and near-field evaluation

1999 ◽  
Author(s):  
Soenke Seebacher ◽  
Wolfgang Osten ◽  
Werner P. O. Jueptner ◽  
Vadim P. Veiko ◽  
Nikolay B. Voznesensky
Keyword(s):  
Near Field ◽  
Field Evaluation ◽  
Far Field ◽  
Geometric Properties

Phaseless Near-Field Far-Field Transformation Utilizing Combinations of Probe Signals

2017 ◽  
Vol 65 (10) ◽  
pp. 5492-5502 ◽  
Author(s):  
Alexander Paulus ◽  
Josef Knapp ◽  
Thomas F. Eibert
Keyword(s):  
Near Field ◽  
Far Field ◽  
Field Transformation

Plane-polar near-field to far-field transformation with the near-field interpolation method

1990 ◽  
Vol 26 (22) ◽  
pp. 1886 ◽  
Author(s):  
E. van Lil ◽  
C. Cao ◽  
A. van de Capelle ◽  
K. Van't Klooster
Keyword(s):  
Interpolation Method ◽  
Near Field ◽  
Far Field ◽  
Field Transformation

scholarly journals An Alternative Spherical near Field to Far Field Transformation

1997 ◽  
Vol 16 ◽  
pp. 269-284 ◽  
Author(s):  
T. K. Sarkar ◽  
P. Petre ◽  
A. Taaghol ◽  
R. F. Harrington
Keyword(s):  
Near Field ◽  
Far Field ◽  
Field Transformation
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