Title :
Relaxation of mechanical tolerances in phase retrieval antenna metrology
Author :
Tennant, A. ; Junkin, G. ; Anderson, A.P.
Author_Institution :
Department of Electronic and Electrical Engineering, The University of Sheffield, Mappin Street, Sheffield S1 3JD, UK. Tel: +44 742 768555; Fax: +44 742 726391
Abstract :
The sensitivity of phase retrieval antenna near-field/far-field predictions to scanning errors is investigated. It is shown that phase retrieval is considerably more tolerant to planarity errors than conventional near-field/far-fleld methods and in this respect is superior for mm and sub-mm wave antennas. Similar improvements apply to cylindrical scanning but the effects are not so important since the radial distance variations will be small. Errors in (x,y) and (¿,z) produce similar errors in both phase retrieval and conventional near-field/far-field predictions.
Keywords :
Antenna measurements; Apertures; Computational modeling; Computer errors; Frequency; Metrology; Phase measurement; Position measurement; Predictive models; Probes;
Conference_Titel :
Microwave Conference, 1993. 23rd European
Conference_Location :
Madrid, Spain
DOI :
10.1109/EUMA.1993.336736
