US3702445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microstrip ring-shaped resonators and microwave generators using the same
Assignee: Lignes Telegraphiques et Telephoniques LTT SA
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Filing: 1971-10-18
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Granted: 1972-11-07
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Expires: 1991-10-18
Abstract
Abstract A microwave resonator comprising an insulating substrate plate with a metallized coating entirely covering one of its faces and a metallized ring on its other face, and a microstrip transmission line on the same plate capacitively coupled with said ring. Microwave generators using such a resonator for determining their working frequency and having a Gunn diode located in the central hole of the ring are also described. The substrate plate can be made of a non-magnetic material or, if a variable frequency is desired, of a magnetic material adjustably polarized by D.C. field producing means.
Inventors
- 👤 Gerard E Forterre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
H; H01; H01P; H01P7/00; H01P7/08; H01P7/088; H03; H03B; H03B9/00; H03B9/12; H03B9/14; H03B9/142
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
121 words
A microwave generator comprising a metal box forming a cavity resonating at a frequency definetely higher than the working frequency of the microwave generator, within such a cavity an annular microstrip resonator consisting of an insulating substrate plate completely metallized on one side and having on its other side a metallized ring within which the plate is provided with a hole containing a solid-state oscillator element connected with the said metallized ring, an output terminal, means for capacitively coupling said output terminal with said ring, and a biassing connection comprising a cylindrical pin secured to the box cover of the resonator and so arranged along the axis line of the said ring as to make contact with the aforesaid oscillator element.
Claim 2
Dependent Claim
121 words
A microwave generator comprising a metal box forming a cavity resonating at a frequency definetely higher than the working frequency of the microwave generator, within such a cavity an annular microstrip resonator consisting of an insulating substrate plate completely metallized on one side and having on its other side a metallized ring within which the plate is provided with a hole containing a solid-state oscillator element connected with the said metallized ring, an output terminal, means for capacitively coupling said output terminal with said ring, and a biassing connection comprising a cylindrical pin secured to the box cover of the resonator and so arranged along the axis line of the said ring as to make contact with the aforesaid oscillator element.
Claim 3
Dependent Claim
18 words
A microwave generator in accordance with claim 1 wherein said solid-state oscillator element consists of a Gunn diode.
Claim 4
Dependent Claim
41 words
A microwave generator in accordance with claim 1 wherein said means for capacitively coupling said output terminal with said metallized resonator ring consist of a microstrip transmission line located on the same said substrate plate and capacitively coupled with said ring.
Claim 5
Dependent Claim
32 words
A variably-frequency microwave generator in accordance with claim 1 wherein said annular resonator is fitted in the gap between the pole-pieces of a magnetic circuit generating a magnetic field of adjustably-variable intensity.
Claim 6
Dependent Claim
30 words
A variable-frequency microwave generator in accordance with claim 4 wherein one of said pole-pieces of said magnetic circuit projects into the resonator box through a hole in the cover thereof.
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) | 1975-11-07 | 1976-05-08 | 1976-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-11-07 | 1980-05-08 | 1980-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-11-07 | 1984-05-08 | 1984-11-07 | $7700.00 | Window Closed / Lapsed |