US4222014A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave/millimeterwave oscillator using transferred electron device
Assignee: Skyworks Solutions Inc
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Filing: 1978-12-26
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Granted: 1980-09-09
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Expires: 1998-12-26
Abstract
Abstract A microwave/millimeterwave oscillator includes a transferred electron device adapted to operate at a first frequency. The device is housed in a waveguide transmission line in a quarter wavelength, quasi-radial mode cavity dimensioned to enable the device to oscillate at a second frequency, higher then the first frequency.
Inventors
- 👤 John Ondria
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:37
CPC Classifications
H; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/145; H03B9/146; H03B2009/126
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
215 words
Microwave/millimeter wave signal translating apparatus comprising: a waveguide transmission line having a predetermined impedance and a broad wall; a transferred electron device having a predetermined impedance and being adapted to operate at a first frequency, said device being disposed within said waveguide transmission line in a predetermined position with a first terminal having a flange generally parallel to said broad wall with a predetermined diameter electrically connected to ground potential and a second terminal electrically connected to a disc generally parallel to said broad wall disposed within said waveguide above said device, said disc being dimensioned to form a quarter wavelength quasi-radial mode cavity with said flange to enable said device to oscillate at a second frequency higher than said first frequency; means connected to said device for coupling a D.C. bias to said device to cause said device to oscillate at said second frequency; means connected to said device for varying said device and said disc position above said broad wall to vary said second frequency of device oscillation; and movable turning means disposed within and movable along the length of said waveguide substantially (2n+1)λ/4 from said device position for matching the impedance of said device to said predetermined impedance, λ being the guide wavelength in said waveguide transmission line at said second frequency.
Claim 2
Dependent Claim
215 words
Microwave/millimeter wave signal translating apparatus comprising: a waveguide transmission line having a predetermined impedance and a broad wall; a transferred electron device having a predetermined impedance and being adapted to operate at a first frequency, said device being disposed within said waveguide transmission line in a predetermined position with a first terminal having a flange generally parallel to said broad wall with a predetermined diameter electrically connected to ground potential and a second terminal electrically connected to a disc generally parallel to said broad wall disposed within said waveguide above said device, said disc being dimensioned to form a quarter wavelength quasi-radial mode cavity with said flange to enable said device to oscillate at a second frequency higher than said first frequency; means connected to said device for coupling a D.C. bias to said device to cause said device to oscillate at said second frequency; means connected to said device for varying said device and said disc position above said broad wall to vary said second frequency of device oscillation; and movable turning means disposed within and movable along the length of said waveguide substantially (2n+1)λ/4 from said device position for matching the impedance of said device to said predetermined impedance, λ being the guide wavelength in said waveguide transmission line at said second frequency.
Claim 3
Dependent Claim
21 words
Microwave/millimeterwave signal translating apparatus in accordance with claim 1, wherein said disc has a diameter substantially less than said flange diameter.
Claim 4
Dependent Claim
26 words
Microwave/millimeterwave signal translating apparatus in accordance with claim 1, wherein said means for coupling said D.C. bias signal to said device include a low pass filter.
Claim 5
Dependent Claim
21 words
Microwave/millimeterwave signal translating apparatus in accordance with claim 3, wherein said disc is an end section of said low pass filter.
Claim 6
Dependent Claim
18 words
Microwave/millimeterwave signal translating apparatus in accordance with claim 1, wherein said device and said disc move in consonance.
Claim 7
Dependent Claim
18 words
Microwave/millimeterwave signal translating apparatus in accordance with claim 1, wherein said moveable tuning means includes a short circuit.
References Cited (Backward Citations)
US3878480A
Cited
US4048589A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |