Title :
Microwave metrology of reflector antennas from a single amplitude
Author :
McCormack, J.E. ; Junkin, G. ; Anderson, A.P.
Author_Institution :
Dept. of Electron. & Electr. Eng., Sheffield Univ., UK
fDate :
10/1/1990 12:00:00 AM
Abstract :
An iterative algorithm incorporating aperture-domain management and an appropriate measurement strategy are employed to recover the aperture phase of a reflector antenna from a single scan of the radiated field amplitude and a simulated approximation of the aperture amplitude. Simulated and experimental results are presented which validate this reflector antenna metrology technique at millimetre wavelengths. Accelerated convergence is obtained and a new sensitive error metric is introduced to assess convergence to the solution. Measurement conditions are identified for modest signal-to-noise requirements and the prevention of algorithm stagnation.
Keywords :
convergence of numerical methods; iterative methods; measurement errors; microwave antennas; microwave measurement; reflector antennas; accelerated convergence; aperture amplitude; aperture phase; aperture-domain management; iterative algorithm; microwave metrology; millimetre wavelengths; radiated field amplitude; reflector antennas; sensitive error metric; signal-to-noise requirements; simulated approximation; single amplitude;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings H
