US4609883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave oscillator hermetically sealed and coupled to dielectric resonator
Assignee: NEC Corp
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Filing: 1984-08-27
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Granted: 1986-09-02
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Expires: 2004-08-27
Abstract
Abstract The interior of a metal housing is divided by a dielectric substrate into two compartments. At least one of the compartments is kept air-tight. The substrate carries thereon a semiconductor active element chip for oscillation within the air-tight compartment and a dielectric resonator within the other compartment. The chip and the resonator, electromagnetically coupled with the chip, constitute a microwave oscillator whose oscillation frequency can be stabilized. A metal screw is threaded into that wall of the housing which defines the other compartment in a predetermined positional relationship to the resonator. The metal screw is rotatable to vary the distance between the screw and the resonator and, thereby, the oscillation frequency.
Inventors
- 👤 Motoo Mizumura
- 👤 Kenzo Wada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:03
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1864; H01; H01P; H01P7/00; H01P7/10; H03B2201/00; H03B2201/01; H03B2201/014; H03B2201/017; H03B5/187; H03B5/1876
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
135 words
A microwave oscillator using a semiconductor active element chip for oscillation having a dielectric resonator electromagnetically coupled thereto to stabilize oscillation, said microwave oscillator comprising: a housing having an internal space defined by a plurality of walls; a dielectric substrate mounted within said housing and cooperating with predetermined ones of the walls of the housing to divide said internal space into first and second compartments, said first compartments being air tight; the semiconductor active element chip mounted on said dielectric substrate within said first compartment and the dielectric resonator mounted on said dielectric substrate within the second compartment; means for electromagnetically coupling said dielectric resonator to said semiconductor active element chip, and oscillation frequency adjusting means arranged in the second compartment in an adjustable positional relationship to the dielectric resonator for adjusting the oscillation frequency.
Claim 2
Dependent Claim
135 words
A microwave oscillator using a semiconductor active element chip for oscillation having a dielectric resonator electromagnetically coupled thereto to stabilize oscillation, said microwave oscillator comprising: a housing having an internal space defined by a plurality of walls; a dielectric substrate mounted within said housing and cooperating with predetermined ones of the walls of the housing to divide said internal space into first and second compartments, said first compartments being air tight; the semiconductor active element chip mounted on said dielectric substrate within said first compartment and the dielectric resonator mounted on said dielectric substrate within the second compartment; means for electromagnetically coupling said dielectric resonator to said semiconductor active element chip, and oscillation frequency adjusting means arranged in the second compartment in an adjustable positional relationship to the dielectric resonator for adjusting the oscillation frequency.
Claim 3
Dependent Claim
19 words
A microwave oscillator as claimed in claim 1, in which said predetermined walls of the housing are side walls.
Claim 4
Dependent Claim
26 words
A microwave oscillator as claimed in claim 2, in which the side walls partly protrude into the internal space to form a continuous shoulder in cooperation.
Claim 5
Dependent Claim
31 words
A microwave oscillator as claimed in claim 3, in which the dielectric substrate is laid on and connected to said continuous shoulder to hold said one compartment of the housing air-tight.
Claim 6
Dependent Claim
72 words
A microwave oscillator as claimed in claim 1, in which the oscillation frequency adjusting means comprises a threaded hole formed through one of the walls of the housing which corresponds in position to the dielectric resonator, and a screw engaged in said threaded hole of said one wall of the housing, whereby said screw is rotatable to vary a distance between the screw and the dielectric resonator and, thereby, the oscillation frequency.
Claim 7
Dependent Claim
19 words
A microwave oscillator as claimed in claim 5, in which the housing and the screw are made of metal.
Claim 8
Dependent Claim
25 words
A microwave oscillator as claimed in claim 1, further comprising a conductor mounted on the dielectric substrate within said first compartment and connected to ground.
Claim 9
Dependent Claim
16 words
A microwave oscillator as claimed in claim 1, wherein said electromagnetic coupling means is a stripline.
References Cited (Backward Citations)
US4511860A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-01 | 1990-03-03 | 1990-09-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-01 | 1994-03-03 | 1994-09-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-01 | 1998-03-03 | 1998-09-02 | $7700.00 | Window Closed / Lapsed |