Patent US3848201A successfully refreshed from Google Patents.
US3848201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turnable solid state local oscillator
Assignee: United States Department of the Navy
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Filing: 1971-10-18
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Granted: 1974-11-12
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Expires: 1991-10-18
Abstract
Abstract A wide band single control tunable power source consisting of a transistor oscillator driving a single stage high order step recovery diode multiplier. The base and emitter of the transistor are each tuned by mechanically tunable, temperature compensated coaxial resonators.
Inventors
- 👤 A Presser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:13
CPC Classifications
H; H03; H03B; H03B19/00; H03B19/16; H03B19/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
70 words
In a wide band tunable power supply the combination comprising: a. a transistor oscillator, b. a two section constant Q, wide band coaxial filter tunable over the n-th harmonic frequency range of said oscillator, c. a step recovery diode connected in series in the input loop of said coaxial filter, d. impedance matching network means coupling the output of said transistor oscillator to said input loop of said coaxial filter.
Claim 2
Dependent Claim
70 words
In a wide band tunable power supply the combination comprising: a. a transistor oscillator, b. a two section constant Q, wide band coaxial filter tunable over the n-th harmonic frequency range of said oscillator, c. a step recovery diode connected in series in the input loop of said coaxial filter, d. impedance matching network means coupling the output of said transistor oscillator to said input loop of said coaxial filter.
Claim 3
Dependent Claim
18 words
The tunable power supply of claim 1 wherein said transistor oscillator includes an Si-npn transistor in grounded configuration.
Claim 4
Dependent Claim
25 words
The tunable power supply of claim 2 wherein the base and emitter of said transistor are each tuned by mechanically tunable temperature compensated coaxial resonators.
Claim 5
Dependent Claim
31 words
The tunable power supply of claim 3 wherein a feedback loop is connected between the base resonator and the emitter resonator for sustaining oscillations over the tuning range of the oscillator.
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) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |