Patent US3711792A successfully refreshed from Google Patents.
US3711792A
Expired / Lapsed
US
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Solid state oscillator having semiconductor elements mounted in a cavity resonator
Assignee: Hitachi Ltd
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Filing: 1969-05-14
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Granted: 1973-01-16
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Expires: 1989-05-14
Abstract
Abstract A solid state oscillator comprising a cavity resonator having an output portion, at least two semi-conductor elements disposed in an equi-phase plane of an electromagnetic field, and means for applying a bias voltage to each of said semiconductor elements.
Inventors
- 👤 K Kimura
- 👤 M Kamimura
- 👤 Y Kaneko
- 👤 Y Fujiwara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:14
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/143
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
82 words
A solid state oscillator comprising a rectangular cavity resonator having an output portion, at least two semiconductor elements inserted in said cavity resonator, and means for applying a bias voltage to each of said semiconductor elements, said semiconductor elements being spaced apart from each other and located in parallel in a plane perpendicular to the axis of said cavity resonator, thereby making substantially constant the ratio of high frequency voltages acting on said semiconductor elements irrespective of variations in the oscillation frequency.
Claim 2
Dependent Claim
82 words
A solid state oscillator comprising a rectangular cavity resonator having an output portion, at least two semiconductor elements inserted in said cavity resonator, and means for applying a bias voltage to each of said semiconductor elements, said semiconductor elements being spaced apart from each other and located in parallel in a plane perpendicular to the axis of said cavity resonator, thereby making substantially constant the ratio of high frequency voltages acting on said semiconductor elements irrespective of variations in the oscillation frequency.
Claim 3
Dependent Claim
19 words
A solid state oscillator according to claim 1, wherein all of said semiconductor elements are negative resistance oscillating elements.
Claim 4
Dependent Claim
40 words
A solid state oscillator according to claim 2, wherein a variable inductance circuit is connected in series with at least one of said negative resistance oscillating elements, thereby adjusting the ratio of high frequency voltages acting on said oscillating elements.
Claim 5
Dependent Claim
35 words
A solid state oscillator according to claim 1, wherein at least one of said semiconductor elements is a negative resistance oscillating element, and at least one of said semiconductor elements is a variable capacitance element.
Claim 6
Dependent Claim
32 words
A solid state oscillator according to claim 4, wherein a variable inductance circuit is connected in series with at least one of said negative resistance oscillating element and said variable capacitance element.
Claim 7
Dependent Claim
35 words
An oscillator according to claim 1, further including a plurality of plungers displaceable in directions parallel to the plane of said elements for adjusting the ratio of the high frequency voltages acting on the elements.
Claim 8
Dependent Claim
31 words
An oscillator according to claim 3, wherein said inductive circuit comprises a pair of inductive coils coaxially mounted with respect to each of said elements in said plane of said elements.
Claim 9
Dependent Claim
35 words
An oscillator according to claim 7, further including a plurality of plungers displaceable in directions parallel to the plane of said elements for adjusting the ratio of the high frequency voltages acting on the elements.
References Cited (Backward Citations)
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US3445778A
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US3465265A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |