A new low-noise high-gain antenna

Autor:	S.R. Jones, K.S. Kelleher
Rok vydání:	1963
Předmět:	Engineering Cassegrain antenna business.industry Offset dish antenna Antenna aperture Antenna measurement Astrophysics::Instrumentation and Methods for Astrophysics Reflector (antenna) Antenna factor Optics Antenna feed Antenna noise temperature Electrical and Electronic Engineering business
Zdroj:	Proceedings of the IEEE. 51:516-516
ISSN:	0018-9219
DOI:	10.1109/proc.1963.1989
Popis:	A new antenna type is described which combines the low noise temperature characteristics of the horn-reflector antenna with the more attractive mechanical features associated with the paraboloidal reflector. Cassegrain optics used in an off-set feed configuration enables a virtual source to be formed without sub-reflector blockage. An extremely compact structure is realized with a concave hyperboloid which mirrors the actual feed located on the paraboloidal surface. Except for the aperture, the antenna is completely shielded. The design approach is outlined and measurements on an experimental model are presented. Ground noise contribution from minor lobes is about 2\deg K.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c0a2904e2b2624e6074c13ea334ef7af https://doi.org/10.1109/proc.1963.1989 Zobrazit plný text záznamu