Hermetically sealed electromagnetic window and method of forming the same
AssigneeHughes Aircraft Company
InventorTheodore G. Anderson, II
Life of this patent
Estimating the term…
Abstract
A hermetically sealed electromagnetic window is formed by butt end brazing an overhanging dielectric window between first and second waveguide segments. The waveguide segments have opposed knife edges with a dielectric insert positioned between the knife edges. A pair of brazing forms are inserted between the insert and the two knife edges. The window is heated, causing the brazing material to reflow and provide a hermetic seal between the insert and the waveguide segments, and a conductive path between the waveguide segments.
Claims20
A hermetically sealed electromagnetic (EM) window, comprising:
- first and second waveguide segments each having segment walls that are thinned at one end into respective knife edges, said first and second waveguide segments being positioned with their knife edges facing each other;
- a dielectric insert positioned between the knife edges of said waveguide segments;
- and
- a brazing material adhered between said insert and said knife edges and providing a hermetic seal between said insert and said waveguide segments.
A hermetically sealed electromagnetic (EM) device, comprising:
- an EM device for processing EM signals in a predetermined atmosphere, said device having input and output ports for transmitting said EM signals;
- a first EM window hermetically sealing said input port, said first EM window comprising:
- a first pair of waveguide segments each having segment walls which are thinned at one end into knife edges;
- and
- a first dielectric insert that is butt end brazed between the knife edges of the first pair of waveguide segments;
- and
- a second EM window hermetically sealing said output port, said second EM window comprising:
- a second pair of waveguide segments each having segment walls which are thinned at one end into knife edges;
- and
- a second dielectric insert that is butt end brazed between the knife edges of the second pair of waveguide segments;
- said first and second EM windows providing a hermetic seal for said EM device to maintain said predetermined atmosphere.
A method for forming a hermetically sealed electromagnetic (EM) window, comprising:
- providing first and second waveguide segments each having segment walls that are thinned into a knife edge at one end, such that respective knife edges are opposed;
- P1 inserting a dielectric insert between the opposed knife edges of said first and second waveguide segments;
- and
- brazing said knife edges to said dielectric insert.
A method for forming a hermetically sealed electromagnetic (EM) window, comprising:
- providing a pair of waveguide segments each one of the pair having segment walls that are thinned into a knife edge at one end, such that respective knife edges are opposed;
- butt end brazing a dielectric insert to the opposed knife edges of the pair of waveguide segments, wherein the dielectric insert overhangs said waveguide segments between the opposed knife edges.
Dependencies are inferred from the claim text.