Patent US5117207A successfully refreshed from Google Patents.
US5117207A
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Monolithic microwave airbridge
Assignee: Lockheed Martin Corp
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Filing: 1990-07-30
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Granted: 1992-05-26
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Expires: 2010-07-30
Abstract
Abstract A monolithic microwave switch matrix includes fully monolithic construction for crossovers as well as switches and input transmission lines configured as lumped equivalent transmission lines for reduced power loss. The crossovers include a grounded conductor located between the crossing transmission lines.
Inventors
- 👤 Scott D. Powell
- 👤 David E. Meharry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:05
CPC Classifications
H; H01; H01P; H01P3/00; H01P3/02; H01P3/08; H01P3/081; H01P1/00; H01P1/10; H01P1/15
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A monolithic microwave transmission line crossover, comprising: a monolithic integrated circuit substrate; a lower conductor formed on a surface of the substrate; a dielectric spacer formed on top of the lower conductor; a grounded conductor formed on top of the spacer; and an upper conductor formed as an airbridge over and electrically separated from eh grounded conductor, said airbridge having an integrated circuit construction.
Claim 2
Dependent Claim
64 words
A monolithic microwave transmission line crossover, comprising: a monolithic integrated circuit substrate; a lower conductor formed on a surface of the substrate; a dielectric spacer formed on top of the lower conductor; a grounded conductor formed on top of the spacer; and an upper conductor formed as an airbridge over and electrically separated from eh grounded conductor, said airbridge having an integrated circuit construction.
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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) | 1995-05-26 | 1995-11-25 | 1996-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-05-26 | 1999-11-25 | 2000-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-05-26 | 2003-11-25 | 2004-05-26 | $7700.00 | Window Closed / Lapsed |