US4922211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave oscillator in which the dielectric resonator is hermetically sealed
Assignee: Siemens AG
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Filing: 1989-03-06
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Granted: 1990-05-01
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Expires: 2009-03-06
Abstract
Abstract A microwave oscillator which has a dielectric resonator which has properties which are dependent on the atmospheric humidity and which should be sealed in a hermetically air tight container to eliminate variations in its characteristics. The dielectric resonator is mounted in a hermetically sealed air tight cavity inside a metal housing in which the electrical circuit is mounted and is arranged at a position relative to coupling elements on a film printed circuit board which has a metallized surface on one side thereof.
Inventors
- 👤 Klaus Otremba
- 👤 Volker Sartorius
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:31
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1864; H03B2201/00; H03B2201/01; H03B2201/014; H03B2201/017
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
172 words
A microwave oscillator comprising, a dielectric resonator, an electrical circuit on a printed circuit board electromagnetically coupled to said dielectric resonator, said dielectric resonator mounted in a hermetically sealed air tight space inside a metal housing to which said circuit board is mounted, and dielectric resonator coupling elements to couple energy between said resonator and said electrical circuit formed on said printed circuit board which has one side upon which components are formed and which has a second side which is metallized over its entire surface so as to form a ground plane and wherein said space is laterally surrounded by the side walls of said metal housing and said space is terminated by said printed circuit board on one end and by a glass plate on the second end, and wherein the insides of said metal housing are formed with step-shaped offset shoulders which are spaced a distance apart which corresponds to the height of said space and said printed circuit board and said glass plate are mounted on said shoulders.
Claim 2
Dependent Claim
172 words
A microwave oscillator comprising, a dielectric resonator, an electrical circuit on a printed circuit board electromagnetically coupled to said dielectric resonator, said dielectric resonator mounted in a hermetically sealed air tight space inside a metal housing to which said circuit board is mounted, and dielectric resonator coupling elements to couple energy between said resonator and said electrical circuit formed on said printed circuit board which has one side upon which components are formed and which has a second side which is metallized over its entire surface so as to form a ground plane and wherein said space is laterally surrounded by the side walls of said metal housing and said space is terminated by said printed circuit board on one end and by a glass plate on the second end, and wherein the insides of said metal housing are formed with step-shaped offset shoulders which are spaced a distance apart which corresponds to the height of said space and said printed circuit board and said glass plate are mounted on said shoulders.
Claim 3
Dependent Claim
20 words
A microwave oscillator according to claim 1 wherein said glass plate is glued to the side walls of said housing.
Claim 4
Dependent Claim
114 words
A microwave oscillator comprising, a dielectric resonator, an electrical circuit on a printed circuit board electromagnetically coupled to said dielectric resonator, said dielectric resonator mounted in a hermetically sealed air tight space inside a metal housing to which circuit board is mounted, and dielectric resonator coupling elements to couple energy between said resonator and said electrical circuit formed on said printed circuit board which has one side upon which components are formed and which has a second side which is metallized over its entire surface so as to form a ground plane and, wherein said dielectric resonator is mounted inside a separate, hermetically sealed air tight housing which is mounted inside said metal housing.
Claim 5
Dependent Claim
114 words
A microwave oscillator comprising, a dielectric resonator, an electrical circuit on a printed circuit board electromagnetically coupled to said dielectric resonator, said dielectric resonator mounted in a hermetically sealed air tight space inside a metal housing to which circuit board is mounted, and dielectric resonator coupling elements to couple energy between said resonator and said electrical circuit formed on said printed circuit board which has one side upon which components are formed and which has a second side which is metallized over its entire surface so as to form a ground plane and, wherein said dielectric resonator is mounted inside a separate, hermetically sealed air tight housing which is mounted inside said metal housing.
Claim 6
Dependent Claim
30 words
A microwave oscillator according to claim 3, wherein said air tight housing is formed of a threaded ring and of two glass plates which are attached to the ends thereof.
Claim 7
Dependent Claim
29 words
A microwave oscillator according to claim 3, wherein said air tight housing is formed of two cup-shaped half shell members of glass which have their end faces joined together.
Claim 8
Dependent Claim
31 words
A microwave oscillator according to claim 3, wherein said air tight housing is formed of a cup-shaped glass vessel and a cover plate which is attached to said cup-shaped glass vessel.
Claim 9
Dependent Claim
37 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6, wherein said dielectric resonator is attached with a glass pin to one of the base surfaces which terminate said space.
Claim 10
Dependent Claim
53 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 including a fine tuning element mounted in a bore of a metallic cover of said metal housing and mounted between said metallic cover and the cover of said space upon which said dielectric resonator is mounted.
Claim 11
Dependent Claim
81 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 wherein said metal housing has open face ends and is formed with a step-shaped offset such that the lower region has a cross section equal to said printed circuit board which is inserted therein, and the upper region of said space which contains said dielectric resonator has a smaller cross section and the end faces of the metal housing are closed with metal covers.
Claim 12
Dependent Claim
53 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 wherein the coupling of said dielectric resonator to said electrical circuit occurs by microstrip lines, which extend through holes formed through said printed circuit board in the area of said space which contains said dielectric resonator.
Claim 13
Dependent Claim
54 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 wherein the coupling of said dielectric resonator to said electrical circuit occurs with a coupling loop which extends through holes formed through said printed circuit board in the area of said space which contains said dielectric resonator.
Claim 14
Dependent Claim
43 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 wherein the coupling of said dielectric resonator to said electrical circuit occurs with wire loops in the area of said space which contains said dielectric resonator.
Claim 15
Dependent Claim
52 words
A microwave oscillator according to claim 2 or 1 or 3 or 4 or 5 or 6 wherein the coupling of said dielectric resonator to the electrical circuit occurs with a slotted line which is coupled to a microstrip line which is formed on said one side of said printed circuit board.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-30 | 1993-10-30 | 1994-05-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-30 | 1997-10-30 | 1998-05-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-30 | 2001-10-30 | 2002-05-01 | $7700.00 | Window Closed / Lapsed |