Patent US5142352A successfully refreshed from Google Patents.
US5142352A
Expired / Lapsed
US
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Ceramic package component having one quarter wavelength spaced conductive grounding vias
Assignee: Oxley Developments Co Ltd
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Filing: 1990-07-06
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Granted: 1992-08-25
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Expires: 2010-07-06
Abstract
Abstract A ceramic package component has a base portion and an upstanding enclosing wall on the base portion, the upper surface of the wall being provided with an electrically conductive coating in order to receive a lid sealingly thereon. The electrically conductive coating on the upper surface of the wall is electrically connected to a further conductive coating on the undersurface of the base portion by means of a high density array of conductive vias extending through the wall. The inter via spacing between adjacent vias is preferably less than one quarter of the wavelength of the frequency at which the component is to operate.
Inventors
- 👤 Jeffrey Chambers
- 👤 David J. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:30
CPC Classifications
H; H10; H10W; H10W70/00; H10W70/60; H10W70/62; H10W70/63; H10W70/635; H10W44/00; H10W44/20; H10W70/67; H10W70/68
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
In a ceramic package component comprising a base portion and an upstanding enclosing wall on the base portion, the upper surface of the wall being provided with an electrically conductive coating in order to receive a lid sealingly thereon, and said electrically conductive coating on the upper surface of the wall being electrically connected to a further conducive coating on the undersurface of the base portion, the improvement wherein said electrical connection of said electrically conductive coatings on said upper surface of said wall and the undersurface of said base portion is achieved by means of a high density array of conductive vias extending through the height of said wall, the inner via spacing between adjacent vias in the high density array being less than one quarter of the wavelength of the frequency at which said component is to operate.
Claim 2
Dependent Claim
140 words
In a ceramic package component comprising a base portion and an upstanding enclosing wall on the base portion, the upper surface of the wall being provided with an electrically conductive coating in order to receive a lid sealingly thereon, and said electrically conductive coating on the upper surface of the wall being electrically connected to a further conducive coating on the undersurface of the base portion, the improvement wherein said electrical connection of said electrically conductive coatings on said upper surface of said wall and the undersurface of said base portion is achieved by means of a high density array of conductive vias extending through the height of said wall, the inner via spacing between adjacent vias in the high density array being less than one quarter of the wavelength of the frequency at which said component is to operate.
References Cited (Backward Citations)
US4908694A
Cited
US4551747A
Cited
US4881116A
Cited
US4890155A
Cited
US4879588A
Cited
US4922325A
Cited
US5043794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-08-25 | 1996-02-24 | 1996-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-08-25 | 2000-02-24 | 2000-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-08-25 | 2004-02-24 | 2004-08-25 | $7700.00 | Window Closed / Lapsed |