US5227749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Structure for making microwave circuits and components
Assignee: Alcatel Espace Industries SA
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Filing: 1990-05-24
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Granted: 1993-07-13
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Expires: 2010-05-24
Abstract
Abstract The invention relates to a structure for making microwave circuits and components, in which the mechanical and electrical functions are integrated overall but dissociated locally. The invention is particularly suitable for space applications.
Inventors
- 👤 Gerard Raguenet
- 👤 Olivier Remondiere
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:55
CPC Classifications
H; H01; H01P; H01P3/00; H01Q; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/065
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
135 words
A structure for use in the manufacture of microwave circuits and microwave components, in which mechanical and electrical functions are integrated overall but dissociated locally, comprising: a mechanically stiff hollow enclosure contiguous with and surrounding a slab of dielectric material solely on the lateral sides of the dielectric slab and forming an assembly; a conductive element and a metal ground plane disposed respectively on opposite, upper and lower sides of the mechanically stiff enclosure and the dielectric slab, to the outside of said assembly; whereby the mechanically stiff enclosure provides a global support for a microwave circuit or component particularly useful in space applications having lightness, stiffness, resistance to high temperatures, low degassing and good dimensional stability, and wherein said mechanically stiff enclosure is made of one of an insulating material and a conductive material.
Claim 2
Dependent Claim
135 words
A structure for use in the manufacture of microwave circuits and microwave components, in which mechanical and electrical functions are integrated overall but dissociated locally, comprising: a mechanically stiff hollow enclosure contiguous with and surrounding a slab of dielectric material solely on the lateral sides of the dielectric slab and forming an assembly; a conductive element and a metal ground plane disposed respectively on opposite, upper and lower sides of the mechanically stiff enclosure and the dielectric slab, to the outside of said assembly; whereby the mechanically stiff enclosure provides a global support for a microwave circuit or component particularly useful in space applications having lightness, stiffness, resistance to high temperatures, low degassing and good dimensional stability, and wherein said mechanically stiff enclosure is made of one of an insulating material and a conductive material.
Claim 3
Dependent Claim
37 words
A structure according to claim 1, further comprising a first layer of dielectric material, supporting the conductive element disposed on said upper side of the assembly constituted by the slab of dielectric material surrounded by the enclosure.
Claim 4
Dependent Claim
36 words
A structure according to claim 2, further comprising a second dielectric layer, supporting the metal ground plane disposed on said lower side of said assembly constituted by the slab of dielectric material surrounded by the enclosure.
Claim 5
Dependent Claim
29 words
A structure according to claim 3, further comprising a layer of glue disposed between the enclosure and the slab of dielectric material and each of the two dielectric layers.
Claim 6
Dependent Claim
14 words
A structure according to claim 1, wherein the enclosure is made of composite material.
Claim 7
Dependent Claim
14 words
A structure according to claim 5, wherein the composite material used comprises KEVLAR fiber.
Claim 8
Dependent Claim
13 words
A structure according to claim 5, wherein the composite material used comprises carbon.
Claim 9
Dependent Claim
13 words
A structure according to claim 5, wherein the composite material used comprises glass.
Claim 10
Dependent Claim
12 words
A structure according to claim 1, wherein the dielectric used includes ceramic.
Claim 11
Dependent Claim
11 words
A structure according to claim 9, wherein the ceramic is aerated.
Claim 12
Dependent Claim
16 words
A structure according to claim 1, wherein the dielectric used includes an organic or composite material.
Claim 13
Dependent Claim
48 words
A structure according to claim 1, wherein said mechanically stiff hollow enclosure is formed of one material of the group consisting of KEVLAR®, carbon and glass, and wherein said dielectric slab is formed of one material of the group consisting of aerated ceramic, ceramic fiber and ceramic felt.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-07-12 | 1997-01-11 | 1997-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-12 | 2001-01-11 | 2001-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-12 | 2005-01-11 | 2005-07-13 | $7700.00 | Window Closed / Lapsed |