Title :
A near-field alignment technique at millimeter and sub-millimeter wavelengths
Author :
Ming-Tang Chen ; Tong, C.E. ; Papa, D.C. ; Blundell, R.
Author_Institution :
Inst. of Astron. & Astrophys., Acad. Sinica, Taipei, Taiwan
Abstract :
We have employed a portable near-field scanner operating at millimeter and sub-millimeter wavelengths to map the 2D amplitude and phase patterns of a radio beam. Combined with a numerical transform, we have developed a novel alignment procedure to diagnose the alignment error in a complex receiving system. The optics of a multiband, superconducting receiver have been aligned using this technique.
Keywords :
Millimetre wave measurement; Millimetre wave receivers; Radiowave interferometry; Reflector antenna feeds; Submillimetre wave measurement; Submillimetre wave receivers; Superconducting microwave devices; 2D amplitude patterns; 2D phase patterns; alignment error; alignment procedure; complex receiving system; millimeter wavelengths; multiband superconducting receiver; near-field alignment technique; numerical transform; portable near-field scanner; sub-millimeter wavelengths; Extraterrestrial measurements; Laser beams; Optical arrays; Optical beams; Optical interferometry; Optical receivers; Optical scattering; Optical waveguides; Structural beams; Superconducting transmission lines;
Conference_Titel :
Microwave Symposium Digest. 2000 IEEE MTT-S International
Conference_Location :
Boston, MA, USA
Print_ISBN :
0-7803-5687-X
DOI :
10.1109/MWSYM.2000.862290
