World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

Fast Near-field Far-field Transformation for Phaseless and Irregular Antenna Measurement Data : Volume 12, Issue 14 (10/11/2014)

By Schnattinger, G.

Click here to view

Book Id: WPLBN0004002738
Format Type: PDF Article :
File Size: Pages 7
Reproduction Date: 2015

Title: Fast Near-field Far-field Transformation for Phaseless and Irregular Antenna Measurement Data : Volume 12, Issue 14 (10/11/2014)  
Author: Schnattinger, G.
Volume: Vol. 12, Issue 14
Language: English
Subject: Science, Advances, Radio
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2014
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

Kılıç, E., Lopez, C., Eibert, T. F., & Schnattinger, G. (2014). Fast Near-field Far-field Transformation for Phaseless and Irregular Antenna Measurement Data : Volume 12, Issue 14 (10/11/2014). Retrieved from http://www.ebooklibrary.org/


Description
Description: Lehrstuhl für Hochfrequenztechnik, Technische Universität München, Munich, Germany. The characterization of antenna radiation patterns by transformed near-field measurements requires accurate amplitude and phase data. This represents a problem since expensive measurement equipment is required, especially at millimeter and submillimeter wavelengths (Isernia et al., 1996). Amplitude-only antenna field measurements are theoretically sufficient for the unique determination of antenna far-fields. Therefore, phaseless techniques are of special interest. However, the required field transformations are extremely challenging, since they are nonlinear and strongly ill-posed.

In this work, the amplitude-only or phaseless near-field far-field transformation problem is formulated as a nonlinear optimization problem. The linear radiation operator within the nonlinear formulation is evaluated using the fast irregular antenna field transformation algorithm (FIAFTA). A hybrid solution procedure is described which combines a genetic algorithm with an iterative conjugate gradient (CG) search method. Numerical results prove the efficiency and flexibility of the formulation and it is shown that the algorithm remains stable when the noise level in the measurements is moderate. Nevertheless, regularization techniques might be beneficial to further improve the robustness of the algorithm.


Summary
Fast near-field far-field transformation for phaseless and irregular antenna measurement data

Excerpt
Pierri, R., D'Elia, G., and Soldovieri, F.: A Two Probes Scanning Phaseless Near-Field Far-Field Transformation Technique, IEEE Trans. Antennas Propag., 47, 792–802, <a href=http://dx.doi.org/10.1109/8.774132>doi:10.1109/8.774132, 1999.; Qureshi, M. A., Schmidt, C. H., and Eibert, T. F.: Near-Field Error Analysis For Arbitrary Scanning Grids Using Fast Irregular Antenna Field Transformation Algorithm, Prog. Electromagn. Res. B, 48, 192–220, 2013.; Calvetti, D., Lewis, B., and Reichel, L.: On the Regularizing Properties of the GMRES Method, Numer. Math., 91, 605–625, 2002.; Capozzoli, A., Curcio, C., D'Elia, G., and Liseno, A.: Phaseless Antenna Characterization by Effective Aperture Field and Data Representations, IEEE Trans. Antennas Propag., 57, 215–230, <a href=http://dx.doi.org/10.1109/TAP.2008.2009647>doi:10.1109/TAP.2008.2009647, 2009.; Chew, W. C., Jin, J.-M., Michielssen, E., and Song, J.: Fast and Efficient Algorithms in Computational Electromagnetics, Artech House, 931 pp., 2001.; Eibert, T. F., Ismatullah, Kaliyaperumal, E., and Schmidt, C. H.: Inverse Equivalent Surface Current Method with Hierarchical Higher Order Basis Functions, Full Probe Correction and Multilevel Fast Multipole Acceleration (Invited Paper), Prog. Electromagn. Res., 106, 377–394, 2010.; Habashy, T. M. and Abubakar, A.: A General Framework for Constraint Minimization for the Inversion of Electromagnetic Measurements, Prog. Electromagn. Res., 46, 265–312, 2004.; Isernia, T., Leone, G., and Pierri, R.: Radiation Pattern Evaluation from Near-Field Intensities on Planes, IEEE Trans. Antennas Propag., 44, 701–710, 1996.; Regue, J.-R., Ribo, M., Garrell, J.-M., and Martin, A.: A Genetic Algorithm based Method for Source Identification and Far-Field Radiated Emissions Prediction from Near-Field Measurements for PCB Characterization, IEEE Trans. Antennas Propag., 43, 520–530, <a href=http://dx.doi.org/10.1109/15.974631>doi:10.1109/15.974631, 2001.; Schmidt, C. H. and Eibert, T. F.: Near-Field to Far-Field Transformation utilising Multilevel Plane Wave Representation for Planar and Quasi-Planar Measurement Contours, IET Microw. Antenna. P., 4, 1829–1837, 2010.; Schmidt, C. H. and Eibert, T. F.: Sub Spectra Representation of Antennas for Plane Wave Based Near-Field Far-Field Transformation at Short Measurement Distances, IEEE Antennas and Propagation Society International Symposium (AP-S), Chicago, IL, USA, July 2012.; Sorber, L., Barel, M. V., and Lathauwer, L. D.: Unconstrained Optimization of Real Functions in Complex Variables, SIAM J. Optimiz., 22, 879–898, 2012.; Yaccarino, R. and Rahmat-Samii, Y.: Phaseless Bi-Polar Planar Nearfield Measurements and Diagnostics of Array Antennas, IEEE Trans. Antennas Propag., 47, 574–583, <a href=http://dx.doi.org/10.1109/8.768794>doi:10.1109/8.768794, 1999.; Yaghjian, A. D.: An Overview of Near-Field Antenna Measurements, IEEE Trans. Antennas Propag., 34, 30–45, 1986.; Yinusa, K. and Eibert, T.: A Multi-Probe Antenna Measurement Technique with Echo Suppression Capability, IEEE Trans. Antennas Propag., 61, 5008–5016, <a href=http://dx.doi.org/10.1109/TAP.2013.2271495>doi:10.1109/TAP.2013.2271495, 2013.


 

Click To View

Additional Books


  • A Fully Probe Corrected Near-field Far-f... (by )
  • Circuit Architecture Derivation Starting... (by )
  • Realization of Broadband Matched Filter ... (by )
  • Principal Component Analysis in Radar Po... (by )
  • Air Mass Origin and Its Influence Over t... (by )
  • Analytic Investigations on the Susceptib... (by )
  • Zellulare Nichtlineare Netzwerke: Anwend... (by )
  • Monitoring of Climate Change in Germany ... (by )
  • Improving Pedestrian Detection Using Mpe... (by )
  • Non-linear Behaviour of Charge-pump Phas... (by )
  • A Cloud-to-ground Lightning Climatology ... (by )
  • Grußworte Des Bundesministeriums Für Bil... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.