Patent US4280110A successfully refreshed from Google Patents.
US4280110A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Millimeter wave source comprising an oscillator module and a variable-capacity module
Assignee: Thales SA
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Filing: 1979-04-11
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Granted: 1981-07-21
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Expires: 1999-04-11
Abstract
Abstract A millimeter wave source, wherein an active diode, for example an avalanche diode, forming the emitter of the source is arranged opposite to a variable capacity diode, so as to have the source frequency-modulated by varying the biassing voltage of the variable capacity diode. In this source, each diode is mounted in a "module" comprising a thermally and electrically conductive support onto which a diode is in contact by one of its electrodes, the other electrode being in contact with a metallization deposited on a thick layer of dielectric material surrounding the diode. Owing to the capacitive coupling between the metallizations of both modules, the source can be frequency-modulated with a high efficiency.
Inventors
- 👤 Gerard Cachier
- 👤 Jean Stevance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 11:05
CPC Classifications
H; H03; H03B; H03B7/00; H03B7/12; H03B7/14; H03B7/143; H03C; H03C3/00; H03C3/10; H03C3/12; H03C3/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
146 words
A millimeter wave source of the type comprising a first module formed by a first diode, a disc of solid dielectric surrounding the diode, a first electrode acting as support and a first metallization acting as biassing electrode, the source additionally comprising biassing means enabling the first diode to function as a diode having negative resistance at high frequencies, the source further comprising a second module formed by a second diode capable of functioning as a variable-capacity diode under predetermined biassing conditions, variable voltage means providing said biassing conditions to said second diode, a second metallization acting as a biassing electrode, said second diode facing said first the diode of the first module so as to form a capacitive coupling between said first and second metallizations, the source additionally comprising a conductive body acting as an electrical earth and as a mechanical support for both modules.
Claim 2
Dependent Claim
146 words
A millimeter wave source of the type comprising a first module formed by a first diode, a disc of solid dielectric surrounding the diode, a first electrode acting as support and a first metallization acting as biassing electrode, the source additionally comprising biassing means enabling the first diode to function as a diode having negative resistance at high frequencies, the source further comprising a second module formed by a second diode capable of functioning as a variable-capacity diode under predetermined biassing conditions, variable voltage means providing said biassing conditions to said second diode, a second metallization acting as a biassing electrode, said second diode facing said first the diode of the first module so as to form a capacitive coupling between said first and second metallizations, the source additionally comprising a conductive body acting as an electrical earth and as a mechanical support for both modules.
Claim 3
Dependent Claim
38 words
A source as claimed in claim 1, wherein the conductive body includes the walls of a wave guide section in which openings are formed for the passage of positioning elements for the two modules and the biassing means.
Claim 4
Dependent Claim
32 words
A source as claimed in claim 2, wherein the first module and the second module are respectively in contact with two conductors belonging to the opposite faces of a two-face printed wiring.
Claim 5
Dependent Claim
76 words
A source as claimed in claim 1, additionally comprising wave guide section, the first module being supported by a first element positioned in a first wall of the wave guide and biassed by a first insulated conductor, the second module being supported by a second element positioned in a second wall of the wave guide and biassed by a second insulated conductor, the common electrical earth connecting the two elements and the walls of the section.
Claim 6
Dependent Claim
36 words
A source as claimed in claim 1, wherein the source is placed in an adjustable position in a recess forming a branch of a wave guide section, the wave guide section additionally comprising a mobile plunger.
References Cited (Backward Citations)
US3714605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |