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A New Expression of Near-Field Gain Correction Using Photonic Sensor and Planar Near-Field Measurements

  • Hirose, Masanobu (National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology) ;
  • Kurokawa, Satoru (National Metrology Institute of Japan, National Institute of Advanced Industrial Science and Technology)
  • Received : 2011.08.25
  • Accepted : 2012.03.05
  • Published : 2012.03.31

Abstract

We propose a new expression of the near-field gain correction to calculate the on-axis far-field gain from the onaxis near-field gain for a directive antenna. The new expression is represented by transversal vectorial transmitting characteristics of two antennas that are measured by planar near-field equipment. Due to the advantages of the photonic sensor, the utilization of the new expression realizes the measurements of the on-axis far-field gains for two kinds of double ridged waveguide horn antennas within 0.1 dB deviation from 1 GHz to 6 GHz without calibrating the photonic sensor system.

Keywords

Near-Field Gain;On-Axis Gain;Photonic Sensor;Planar Near-Field Measurements

References

  1. G. E. Evans, Antenna Measurement Techniques, Artech House, pp. 19-22 and p. 66, 1990.
  2. T. S. Chu, R. A. Semplak, "Gain of electromagnetic horns," Bell System Technical Journal, vol. 44, no. 3, pp.527-537, Mar. 1965. https://doi.org/10.1002/j.1538-7305.1965.tb01675.x
  3. A. C. Ludwig, R. A. Norman, "A new method for calculating correction factors for near-field gain measurements," IEEE Trans. Antennas and Propagation, vol. 21, no. 5, pp. 623-628, Sep. 1973. https://doi.org/10.1109/TAP.1973.1140552
  4. T. Uno, S. Adachi, "Range distance requirements for large antenna measurements," IEEE Trans. Antennasand Propagation, vol. 37, no. 6, pp. 707-720, Jun. 1989. https://doi.org/10.1109/8.29357
  5. G. Mayhew-Ridgers, J. W. Odendaal, and J. Joubert, "Horn antenna analysis as applied to the evaluation of the gain-transfer method," IEEE Trans. Instrumentation and Measurement, vol. 49, no. 5, pp. 949-958, Oct. 2000. https://doi.org/10.1109/19.872913
  6. A. C. Newell, R. C. Baird, and P. F. Wacker, "Accurate measurement of antenna gain and polarization at reduced distances by an extrapolation tequnique," IEEE Trans. Antennas and Propagation, vol. 21, no. 4, pp. 418-431, Jul. 1973. https://doi.org/10.1109/TAP.1973.1140519
  7. D. M. Kern, Plane-Wave Scattering-Matrix Theory of Antennas and Antenna-Antenna Interactions, National Bureau of Standards Monograph 162, Ch. 2, 1981
  8. A. C. Newell, "Error analysis techniques for planar near-field measurements," IEEE Trans. Antennas and Propagation, vol. 36, no. 6, pp. 754-768, Jun. 1988. https://doi.org/10.1109/8.1177
  9. M. Hirose, T. Ishizone, and K. Komiyama, "Antenna pattern measurements using photonic sensor for planar near-field measurement at X band," IEICE Trans. Communions, vol. E87-B, no. 3, pp. 727-734, Mar. 2004.
  10. R. E. Collin, Antennas and Radiowave Propagation, McGraw-Hill, pp. 284-286 and pp. 303-304, 1985.
  11. M. Hirose, S. Kurokawa, "Far-field gain measurement using a new expression of near-field gain correction and photonic sensor," Proceedings of ISAP 2011, FrB2-1, SE10_1002, Oct. 2011.
  12. FEKO, http://www.feko.info