caa a22 4500 477123406 CHVBK 20180405111643.0 cr unu---uuuuu 170330e19970901xx s 000 0 eng 10.1007/BF02678281 doi (NATIONALLICENCE)springer-10.1007/BF02678281 Characterization of corrugated feed horns at 216 and 300 GHz [Elektronische Daten] [M. Chen, C. Tong, S. Paine, R. Blundell] We present measurements of the near-field beam profiles of two corrugated feed horns with center frequencies of 216 and 300 GHz. Both co-polar and cross-polar components of the electric field have been probed across the operation band of the horns. A full-wave numerical near-field transformation, based on a vector Kirchhoff integral, is implemented to transform the measured field to the horn aperture for a comparison with the ideal aperture field. From the overlap integral of the transformed and the ideal field, we conclude that the field radiated by these horns is the HE11 mode, to a purity of better than 99%. Plenum Publishing Corporation, 1997 corrugated feed horn nationallicence near-field measurement nationallicence Kirchhoff integral nationallicence Chen M. Institute of Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan 115 aut Tong C. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut Paine S. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut Blundell R. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/9(1997-09-01), 1697-1711 0195-9271 18:9<1697 1997 18 10762 https://doi.org/10.1007/BF02678281 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02678281 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen M. Institute of Astronomy and Astrophysics, Academia Sinica, Taipei, Taiwan 115 aut NATIONALLICENCE 700 1- Tong C. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut NATIONALLICENCE 700 1- Paine S. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut NATIONALLICENCE 700 1- Blundell R. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, 02138, Cambridge, Massachusetts, USA aut NATIONALLICENCE 773 0- International Journal of Infrared and Millimeter Waves Kluwer Academic Publishers-Plenum Publishers 18/9(1997-09-01), 1697-1711 0195-9271 18:9<1697 1997 18 10762 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer