US4484156A
Expired / Lapsed
US
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Transistor microwave oscillators
Assignee: Centre National de la Recherche Scientifique
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Filing: 1982-03-18
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Granted: 1984-11-20
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Expires: 2002-03-18
Abstract
Abstract The microwave oscillator, including a transistor (1), e.g. a field-effect transistor, includes a first resonating circuit (2) connected to a first terminal and a second resonating circuit (3) connected to a second terminal of said transistor, each resonating circuit including a microstrip (4,6), to which is coupled a dielectric resonator 5,7, both resonators of both resonating circuits being similar and operating at the same resonating frequency, third terminal of said transistor defining a power output. The oscillator provides two outputs of lower power but with a high Qext, and an output of higher power with a medium Qext.
Inventors
- 👤 Amarpal S. Khanna
- 👤 Pierre Guillon
- 👤 Yves Garault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:06
CPC Classifications
H; H03; H03B; H03B5/00; H03B5/18; H03B5/1841; H03B5/1847; H03B5/1852
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A transistor microwave oscillator, comprising: a transistor; a transistor biasing means; and a first resonating circuit having a dielectric resonator connected to a first terminal of said transistor, and at least a second resonating circuit having a dielectric resonator connected to a second terminal of said transistor; said dielectric resonators of said first and second resonating circuits being similar and operating at the same resonance frequency, each resonating circuit defining a microwave output.
Claim 2
Dependent Claim
73 words
A transistor microwave oscillator, comprising: a transistor; a transistor biasing means; and a first resonating circuit having a dielectric resonator connected to a first terminal of said transistor, and at least a second resonating circuit having a dielectric resonator connected to a second terminal of said transistor; said dielectric resonators of said first and second resonating circuits being similar and operating at the same resonance frequency, each resonating circuit defining a microwave output.
Claim 3
Dependent Claim
19 words
A microwave oscillator as in claim 1, wherein said transistor is a field-effect transistor having an inverted symmetrical channel.
Claim 4
Dependent Claim
20 words
A microwave oscillator as in claim 1, wherein said transistor is a field-effect transistor arranged as a common source circuit.
Claim 5
Dependent Claim
14 words
A microwave oscillator as in claim 1, wherein said transistor is a bipolar transistor.
Claim 6
Dependent Claim
26 words
A microwave oscillator as in claim 1, wherein a third terminal of said transistor is connected to a load, thereby providing a third output for microwaves.
Claim 7
Dependent Claim
39 words
A microwave oscillator as in any one of the preceding claims, wherein said resonating circuits result from applying microstrip lines on an insulating substrate, each resonator being coupled to the associated microstrip line in the TE 01 δ mode.
Claim 8
Dependent Claim
25 words
A microwave oscillator as in claim 6, wherein said resonators are made of S n .sbsb.x Z r .sbsb.(1-x) TiO 4 ceramic material (where x=0.25/0.34).
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) | 1987-11-20 | 1988-05-21 | 1988-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-11-20 | 1992-05-21 | 1992-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-11-20 | 1996-05-21 | 1996-11-20 | $7700.00 | Window Closed / Lapsed |