US3755753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Broadband solid state amplifier
Assignee: Raytheon Co
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Filing: 1971-12-21
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Granted: 1973-08-28
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Expires: 1991-12-21
Abstract
Abstract A plurality of solid state devices exhibiting negative resistance characteristics in the nonoscillating state are positioned in parallel at periodic intervals along an electromagnetic energy transmission line so as to provide a negative propagation constant to effect a high gain broadband amplifier. Sections of devices with the total number increasing within subsequent sections and reverse wave limitation means together with suitable impedance matching means complete the device. Both rectangular and coaxial waveguide transmission line configurations are described.
Inventors
- 👤 B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:20
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/10
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
82 words
An electromagnetic energy amplifier device comprising: means defining a nonresonant energy transmission line having an input and output end; solid state nonoscillating negative-resistance devices connected electrically in parallel at periodic intervals along said transmission line, the number of such devices increasing sequentially downstream toward said output end; means for electrically biasing said solid state devices to provide said transmission line with a negative propagation constant; and means providing for nonreciprocal transmission of energy and impedance matching coupled at intervals to said line.
Claim 2
Dependent Claim
82 words
An electromagnetic energy amplifier device comprising: means defining a nonresonant energy transmission line having an input and output end; solid state nonoscillating negative-resistance devices connected electrically in parallel at periodic intervals along said transmission line, the number of such devices increasing sequentially downstream toward said output end; means for electrically biasing said solid state devices to provide said transmission line with a negative propagation constant; and means providing for nonreciprocal transmission of energy and impedance matching coupled at intervals to said line.
Claim 3
Dependent Claim
16 words
An amplifier device according to claim 1 wherein said transmission line has a coaxial waveguide configuration.
Claim 4
Dependent Claim
16 words
An amplifier device according to claim 1 wherein said transmission line has a rectangular waveguide configuration.
Claim 5
Dependent Claim
16 words
An amplifier device according to claim 1 wherein said solid state devices comprise a bulk-effect diode.
Claim 6
Dependent Claim
17 words
An amplifier device according to claim 1 wherein said solid state devices comprise an avalanche type diode.
Claim 7
Dependent Claim
17 words
An amplifier device according to claim 1 wherein said nonreciprocal transmission means comprise a multi-port ferrimagnetic circulator.
References Cited (Backward Citations)
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Cited
US3445778A
Cited
US3457528A
Cited
US3619801A
Cited
US3491310A
Cited
US3646467A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |