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


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.


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


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