Patent US3623146A successfully refreshed from Google Patents.
US3623146A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature compensated cavity for a solid-state oscillator
Assignee: Hitachi Ltd
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Filing: 1969-05-23
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Granted: 1971-11-23
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Expires: 1989-05-23
Abstract
Abstract A temperature-compensating device for a solid-state oscillator, wherein a part of the conductive walls constituting a cavity resonator is formed by a movable plate, the movable plate is fixed to one end of a dielectric rod with a high coefficient of linear expansion, and the other end of said rod is fixed to an extension of said cavity resonator.
Inventors
- 👤 Yoichi Kaneko
- 👤 Kenzi Sekine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:07
CPC Classifications
H; H03; H03L; H03L1/00; H03L1/02; H03L1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
A temperature-compensating device for a solid-state oscillator, comprising a cavity resonator provided with a movable conductive plate, a solid-state oscillating element inserted in said cavity resonator,means for applying a bias voltage to said oscillating element, a rodlike dielectric member, and an output portion, said movable conductive plate being fixed to one end of said rodlike dielectric member, the other end of said rodlike dielectric member being supported by an extension of said cavity resonator, wherein the thickness of said movable conductive plate is selected to be 1/4 lambda ( lambda being the wavelength of the oscillation wave), and the surface of said movable conductive plate which faces said cavity resonator is spaced apart from the portion of said extension which supports said rodlike dielectric member by a distance corresponding to 1/2 lambda .
Claim 2
Dependent Claim
133 words
A temperature-compensating device for a solid-state oscillator, comprising a cavity resonator provided with a movable conductive plate, a solid-state oscillating element inserted in said cavity resonator,means for applying a bias voltage to said oscillating element, a rodlike dielectric member, and an output portion, said movable conductive plate being fixed to one end of said rodlike dielectric member, the other end of said rodlike dielectric member being supported by an extension of said cavity resonator, wherein the thickness of said movable conductive plate is selected to be 1/4 lambda ( lambda being the wavelength of the oscillation wave), and the surface of said movable conductive plate which faces said cavity resonator is spaced apart from the portion of said extension which supports said rodlike dielectric member by a distance corresponding to 1/2 lambda .
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |