The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 13, 1987
Filed:
Oct. 01, 1985
Bobby J Boan, Indian Harbour Beach, FL (US);
William F Croswell, Melbourne, FL (US);
Harris Corporation, Melbourne, FL (US);
Abstract
A waveguide-fed horn structure includes a constraining mechanism having an extremely high degree of dimensional stability over a wide thermal range. The constraining mechanism comprises a composite graphite honeycomb structure that forms a support backing for the waveguide feed and for the conductive surface sections of the horn radiator. The conductive surface of the horn radiator is supported on a first section of graphite epoxy laminate while a second section of graphite epoxy laminate supports the honeycomb backing and is bonded to the first section of laminate, thereby effectively surrounding the feed-horn structure with a thermally tolerant, physical distortion constraining support. The graphite epoxy support provides sufficient mass and mechanical stiffness to prevent performance degrading distortion of both the waveguide feed and the horn radiator surface in spite of the severe transient thermal conditions encountered in a spaceborne environment, thereby maintaining structural integrity of the components of the structure during extreme thermal cycling conditions (full sun to no sun).