image thumbnail

NF2FF

version 1.10.0.0 (49.3 KB) by Van Caekenberghe, K.; Logan, J.
Near-Field to Far-Field Transformation for Antenna Measurements

8K Downloads

Updated 15 Jan 2014

View License

Near-Field to Far-Field Transformation for Antenna Measurements (NF2FF).

Hologram analysis can also be used to study near field communication (NFC) antennas.

J. Logan (jloganuri@gmail.com, logan@ecs.umass.edu)
A. P. Mynster (andersmynster@hotmail.com)
M. J. Pelk (m.j.pelk@tudelft.nl)
C. Ponder (chris.ponder@sli-institute.ac.uk)
K. Van Caekenberghe (vcaeken@umich.edu)

The script assumes:
1. Rectangular coordinate system with z axis normal to planar aperture
2. exp(j*omega*t) time dependence convention. Please, substitute i with -j whenever implementing exp(-i*omega*t) time dependence convention based algorithms.

The script uses:
1. Near field datasets of a 94 GHz slotted waveguide (U.S. Patent No.: 7,994,969) can be downloaded from: http://www-personal.umich.edu/~vcaeken/DATASETS.zip.

Sought-after extensions are listed below. Please post them on the
website, if you are willing to contribute:
1. Cylindrical and spherical near field to far field transformation
2. Graphical user interface

The package also includes data acquisition scripts for reading out S-parameters from the HP 8510C and HP 8720ES network analyzers, and the Rohde & Schwarz ZVA40 network analyzer. The DAQ scripts require a MATLAB Instrument Control Toolbox license.

References:
1. C. A. Balanis, "Antenna Theory, Analysis and Design, 2nd Ed.", Wiley, 1997. [exp(j*omega*t) time dependence convention]
2. D. Paris, W. Leach, Jr., E. Joy, "Basic Theory of Probe-Compensated Near-Field Measurements", IEEE Transactions on Antennas and Propagation, Vol. 26, No. 3, May 1978. [exp(-i*omega*t) time dependence convention]
3. A. D. Yaghjian, "Approximate Formulas for the Far Field and Gain of Open-Ended Rectangular Waveguide", IEEE Transactions on Antennas and Propagation, Vol. 32, No. 4, April 1984. [exp(-i*omega*t) time dependence convention]
4. A. D. Yaghjian, "An Overview of Near-Field Antenna Measurements", IEEE Transactions on Antennas and Propagation, Vol. 34, No. 1, June 1986. [exp(-i*omega*t) time dependence convention]
5. G. F. Masters, "Probe-Correction Coefficients Derived From Near-Field Measurements", AMTA Conference, October 7-11, 1991.
6. J. J. Lee, E. M. Ferren, D. P. Woollen, and K. M. Lee, "Near-Field Probe Used as a Diagnostic Tool to Locate Defective Elements in an Array Antenna", IEEE Transactions on Antennas and Propagation, Vol. 36, No. 6, June 1988. [exp(-i*omega*t) time dependence convention]
7. http://www.fftw.org/
8. R. M. Goldstein, H. A. Zebken, and C. L. Werner, "Satellite Radar Interferometry: Two-Dimensional Phase Unwrapping", Radio Sci., Vol. 23, No. 4, pp. 713-720, 1988.
9. D. C. Ghiglia and M. D. Pritt, "Two-Dimensional Phase Unwrapping: Theory, Algorithms and Software". Wiley-Interscience, 1998.
10. J. M. De Freitas. "SPHERE3D: A Matlab Function to Plot 3-Dimensional Data on a Spherical Surface".
QinetiQ Ltd, Winfrith Technology Centre, Winfrith,
Dorchester DT2 8XJ. UK. 15 September 2005.
10. http://nf2ff.sourceforge.net

Cite As

Van Caekenberghe, K.; Logan, J. (2021). NF2FF (https://www.mathworks.com/matlabcentral/fileexchange/23385-nf2ff), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2008b
Compatible with any release
Platform Compatibility
Windows macOS Linux

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!