Accession Number : ADA623507


Title :   Advanced Antenna Measurement Processing


Descriptive Note : Final rept. 1 Sep 2013-31 May 2014


Corporate Author : CALIFORNIA STATE UNIV NORTHRIDGE


Personal Author(s) : Pogorzelski, Ronald J ; Rengarajan, Sembiam R


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a623507.pdf


Report Date : 18 Jun 2014


Pagination or Media Count : 34


Abstract : This research project is focused on the advancement of methods of post measurement processing of antenna pattern measurements to enhance their utility in assessment of antenna performance. Three specific techniques are treated; planar near-field extrapolation, planar near-field extended probe calibration, and the Super Iso-filter for separation of the radiation field into components originating from specified regions of the radiating structure. We show that planar near field measurement maybe extrapolated beyond the scan plane sampling region to provide wider angle far field results than otherwise obtainable. We also show that a calibration measurement in planar near field scanning can be used to remove artifacts arising from multipath effects on the measurement range. Finally, we demonstrate that the iterative processing embodied in the Super Iso-filter algorithm provides an effective and rigorously correct means of separating the radiation from two separate antennas using only data measured for both antennas radiating simultaneously. The three techniques treated here provide convenient and useful tools to the antenna engineer in designing and assessing the performance of antennas for practical use.


Descriptors :   *ANTENNAS , *MULTIPATH TRANSMISSION , *SIGNAL PROCESSING , ALGORITHMS , CALIBRATION , COMMUNICATIONS NETWORKS , COUPLING(INTERACTION) , EXTRAPOLATION , FAR FIELD , MATHEMATICAL FILTERS , NEAR FIELD , PATTERNS , PERFORMANCE(ENGINEERING) , PLANAR STRUCTURES , PLANE WAVES , PROBES , RADIATION , SCANNING , WAVE PROPAGATION , WAVEGUIDES


Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation


Distribution Statement : APPROVED FOR PUBLIC RELEASE