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US3820039A
Expired / Lapsed
US
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Electrically tunable tuned line oscillator
Assignee: Systron Donner Corp
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Filing: 1972-11-02
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Granted: 1974-06-25
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Expires: 1992-11-02
Abstract
Abstract The disclosed embodiment of the present invention is a voltage tunable oscillator which includes a pair of tuning lines mounted transversely in a transmission line structure in parallel relationship to one another. One tuning line includes a Gunn diode and an inductive line section mounted in series with one another between opposite walls of the transmission line structure. The other tuning line includes a varactor diode and an inductive line section mounted in series with one another between opposite walls of the transmission line structure. The Gunn diode and varactor diode are mounted on opposite walls of the transmission line structure from one another. Suitable bias voltage is supplied to the Gunn diode and varactor diode. The spacing between the tuning lines is substantially less than the spacing from each line to a wall of the transmission line structure which is parallel thereto. Accordingly, the tuning range of the oscillator is determined primarily by the distance between the tuning lines.
Inventors
- 👤 L Farrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:21
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/141
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
An electrically tunable oscillator comprising a. a walled transmission line structure having a space extending longitudinally therethrough; b. first and second tuning lines mounted in parallel relation to one another and transversely within the space of said transmission line structure, one of said tuning lines including an active element and the other of said tuning lines including a variable impedance element, c. voltage means for controlling the impedance of said impedance element, additional voltage means for supplying a voltage to said active element, and d. means coupled to one of said tuning lines for removing a generated signal, said first and second tuning lines forming a tuned circuit with an operating oscillation which is adjustable over a pre-determined tuning range by controlling the voltage means controlling the impedance of the impedance element.
Claim 2
Dependent Claim
132 words
An electrically tunable oscillator comprising a. a walled transmission line structure having a space extending longitudinally therethrough; b. first and second tuning lines mounted in parallel relation to one another and transversely within the space of said transmission line structure, one of said tuning lines including an active element and the other of said tuning lines including a variable impedance element, c. voltage means for controlling the impedance of said impedance element, additional voltage means for supplying a voltage to said active element, and d. means coupled to one of said tuning lines for removing a generated signal, said first and second tuning lines forming a tuned circuit with an operating oscillation which is adjustable over a pre-determined tuning range by controlling the voltage means controlling the impedance of the impedance element.
Claim 3
Dependent Claim
92 words
A tunable oscillator as defined in claim 1, wherein each of said tuning lines includes a line section forming an inductance coupled to the transmission line structure, said first tuning line having an active element coupled at one end thereof to said transmission line structure and at the other end thereof to one end of the associated line section, said second tuning line having a variable impedance element coupled at one end thereof to said transmission line structure and at the other end thereof to one end of the associated line section.
Claim 4
Dependent Claim
38 words
A tunable oscillator as defined in claim 2 wherein said active element is mounted on one side of said transmission line structure and said variable impedance element is mounted on an opposite side of said transmission line structure.
Claim 5
Dependent Claim
17 words
A tunable oscillator as defined in claim 3 wherein said line sections have an elongate cylindrical configuration.
Claim 6
Dependent Claim
39 words
A tunable oscillator as defined in claim 3 wherein the spacing between line sections is substantially less than the spacing of each line section to a wall of said transmission line structure which is parallel to said line section.
Claim 7
Dependent Claim
25 words
A tunable oscillator as defined in claim 5 wherein the tuning range is determined by the relative spacing between said first and second tuning lines.
Claim 8
Dependent Claim
25 words
A tunable oscillator as defined in claim 1 wherein said active element is a Gunn diode and said variable impedance element is a varactor diode.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |