Title :
Near-field amplitude-only measurement system to validate performance of mm-wave antennas
Author :
Deshpande, Manohar D. ; Zhaona, Zhang ; Starr, David O. ; Racette, Paul E. ; Hersey, Kenneth E. ; Marx, Catherine T. ; du Toit, Cornelis F. ; Mahnad, Ali R.
Author_Institution :
Goddard Space Flight Center, NASA, Greenbelt, MD, USA
Abstract :
This paper presents design and experimental validation of the radiation performance of a mm wave antenna comprising of a torroidal shaped reflector with multiple sub reflectors to be used in NASA´s SIRICE mission. Design aspects of the SIRICE antenna system are discussed and a near-field amplitude-only measurement setup is described for experimental validation of the radiation performance of the SIRICE antenna. A global optimization procedure, Particle Swarm Optimization (PSO), was used to estimate the phase front of the measured near-field. The radiation performance of a standard X-band antenna obtained from near-field amplitude-only measurements is compared with its documented performance.
Keywords :
Antenna measurements; Clouds; Ice; Near-field radiation pattern; Particle measurements; Particle swarm optimization; Phase estimation; Phase measurement; Radiometers; Reflector antennas;
Conference_Titel :
Antennas and Propagation (EuCAP), 2010 Proceedings of the Fourth European Conference on
Conference_Location :
Barcelona, Spain
Print_ISBN :
978-1-4244-6431-9
Electronic_ISBN :
978-84-7653-472-4
