Patent ID: 8134515
Filing Date: 2012-03-13
Classification: H01L,H01Q,H03D,Y10T

Abstract:
1. A waveguide/feedhorn assembly for use in an electromagnetic radiation detector, the assembly comprising: a waveguide block comprising a block of material having an opening in a face thereof and having at least part of a waveguide therein and at least an end portion of a feedhorn therein, said end portion of a feedhorn being provided by a machine-formed portion extending into the wavequide block at said opening, the end portion of the feedhorn and the at least part of a waveguide having an integral connecting junction therebetween for delivery of radiation, wherein said at least part of a waveguide has a waveguiding surface whose cross section is at least substantially quadrilateral, said end portion of a feedhorn having an internal cross section, transverse to the feed direction of the feedhorn, which is at least substantially rounded, and the junction being recessed from said face of the block of material and provided by a continuous surface in the waveguiding direction of the waveguide.