US3611196A
Expired / Lapsed
US
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Integrated microwave system having a hybrid structure with a nonmagnetic dielectric ceramic substrate
Assignee: US Philips Corp
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Filing: 1970-02-20
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Granted: 1971-10-05
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Expires: 1990-02-20
Abstract
Abstract An integrated microwave system having a hybrid structure using a nonmagnetic dielectric ceramic substrate consisting of a sintered ferrite having a lower Curie point than the lowest operating temperature of the system. The system includes two or more interconnected elements integrally united with the substrate. Each of these elements consists essentially of a soft magnetic ferrite which is sintered to the substrate.
Inventors
- 👤 Wolfgang Tolksdorf
- 👤 Peter Holst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:37
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/32; C; C04; C04B; C04B35/00; C04B35/01; C04B35/26; C04B35/2608; C04B35/2625; C04B35/2641; C04B35/2675; G; G11; G11B; G11B5/00; G11B5/62; G11B5/68; G11B5/70; H01F; H01F1/00; H01F1/01; H01F1/03; H01F1/12; H01F1/34; H01F1/342; H01F1/344; H01F1/346; H01P1/18; H01P1/19; Y; Y10; Y10S; Y10S264/00; Y10S264/58
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
25 words
An integrated microwave system as claimed in claim 1 wherein the ferrite materials of the substrate and the system elements have a cubic spinel structure.
Claim 2
Dependent Claim
18 words
An integrated microwave system as claimed in claim 2, wherein the said ferrite materials consist of manganese-magnesium ferrites.
Claim 3
Dependent Claim
17 words
An integrated microwave system as claimed in claim 3, wherein the substrate ferrite is a manganese-magnesium-aluminum ferrite.
Claim 4
Dependent Claim
24 words
An integrated microwave system as claimed in claim 1 wherein the ferrite materials of the substrate and the system elements have a garnet structure.
Claim 5
Dependent Claim
18 words
An integrated microwave system as claimed in claim 5, wherein the said ferrite materials consist of yttrium-iron garnet.
Claim 6
Dependent Claim
17 words
An integrated microwave system as claimed in claim 6, wherein the substrate ferrite is an yttrium-aluminum-iron garnet.
Claim 7
Dependent Claim
27 words
An integrated microwave system as claimed in claim 6 in which a portion of the iron in the yttrium-iron garnet has been replaced by silicon and calcium.
Claim 8
Dependent Claim
27 words
An integrated microwave system as claimed in claim 7 in which a portion of the iron in the yttrium-iron garnet has been replaced by silicon and calcium.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-04 | 1975-04-05 | 1975-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-04 | 1979-04-05 | 1979-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-04 | 1983-04-05 | 1983-10-05 | $7700.00 | Window Closed / Lapsed |