|
|||||
|
|
Measurements of Beam Pattern Perturbation in Corrugated Feed Horn Arrays for CMB Observations |
|
| Authors: | O D’arcangelo S Garavaglia A Simonetto C Sozzi M Bersanelli A Mennella F Villa |
| Institution: | (1) Istituto di Fisica del Plasma, Consiglio Nazionale delle Ricerche, Via Cozzi, 53, 20125 Milano, Italy;(2) Dipartimento di Fisica, Universita’ degli Studi, Via Celoria 16, 20133 Milano, Italy;(3) Istituto di Astrofisica Spaziale e Fisica Cosmica, Consiglio Nazionale delle, Ricerche, sezione di Milano, Via Bassini 15, 20133, Italy;(4) Istituto di Astrofisica Spaziale e Fisica Cosmica, Consiglio Nazionale delle, Ricerche, sezione di Bologna, via Gobetti 101, 40129, Italy |
| Abstract: | An experimental study on the perturbation of the angular response of a W-band corrugated horn produced by nearby feeds, reproducing a typical situation of multi-feed arrays commonly used in high sensitivity Cosmic Microwave Background instruments, is reported in this paper. The effects for different positions of the scattering horn in the two principal polarisation planes were measured. We analyze the effects on both the side-lobe level and on the main beam. In particular, these results allowed us to validate design criterion for the multi-frequency focal array of the ESA PLANCK mission.This revised version was published online in July 2005. The first author’s e-mail address was removed. |
| Keywords: | beam pattern measurements corrugated feed horn cosmic microwave background mutual coupling |
| 本文献已被 SpringerLink 等数据库收录！ | |