US3842361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave amplifier
Assignee: General Electric Co
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Filing: 1973-10-15
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Granted: 1974-10-15
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Expires: 1993-10-15
Abstract
Abstract A double-tuned microwave amplifier comprising an outer conductive shell, a controlled charge carrier device disposed within said shell, and means operatively dividing the shell into two radial transmission mode, double-tuned cavities upon energization thereof by said device.
Inventors
- 👤 J Quirk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:21
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
167 words
A microwave frequency amplifier comprising: a. a conductive shell having a main body and at least one end wall, said main body having a longitudinal axis of symmetry intersecting said at least one end wall; b. a controlled charge carrier device for operation at microwave frequencies supported within said shell, said device having first, second, and third terminals; c. an RF input terminal supported in said shell electrically coupled to said first terminal; d. means in said shell defining a first resonant cavity between the second and third terminals of said device radially of said axis and a second resonant cavity between said third terminal and said at least one end wall radially of said axis; e. coupling means for transmitting electromagnetic energy from said first to said second cavity; and f. a double-tuned radial resonant circuit being provided by the electromagnetic coupling of said cavities upon RF energy being supplied to the RF input, thereby energizing said device and said cavities to operate at microwave frequencies.
Claim 2
Dependent Claim
167 words
A microwave frequency amplifier comprising: a. a conductive shell having a main body and at least one end wall, said main body having a longitudinal axis of symmetry intersecting said at least one end wall; b. a controlled charge carrier device for operation at microwave frequencies supported within said shell, said device having first, second, and third terminals; c. an RF input terminal supported in said shell electrically coupled to said first terminal; d. means in said shell defining a first resonant cavity between the second and third terminals of said device radially of said axis and a second resonant cavity between said third terminal and said at least one end wall radially of said axis; e. coupling means for transmitting electromagnetic energy from said first to said second cavity; and f. a double-tuned radial resonant circuit being provided by the electromagnetic coupling of said cavities upon RF energy being supplied to the RF input, thereby energizing said device and said cavities to operate at microwave frequencies.
Claim 3
Dependent Claim
30 words
The amplifier of claim 1 wherein said cavity defining means comprises a first conductive plate electrically connected to the second terminal of said device and to the main body portion.
Claim 4
Dependent Claim
73 words
The amplifier of claim 2 wherein said cavity defining means further comprises a second conductive plate electrically coupled to the third terminal, said first cavity being formed between said first and second plates and said second cavity being formed between said at least one end wall and said second plate; and wherein an RF output coupling is mounted in said at least one end wall for coupling microwave energy out of said shell.
Claim 5
Dependent Claim
35 words
The amplifier of claim 1 further comprising a first input means in said shell defining a first input cavity radially of said axis for transmitting electromagnetic energy from said RF input to said first terminal.
Claim 6
Dependent Claim
42 words
The amplifier of claim 1 further comprising a second input means defining a second input resonant cavity radially of said axis, said second input cavity being electromagnetically coupled between said first input cavity and said first terminal to transmit electromagnetic energy therebetween.
Claim 7
Dependent Claim
138 words
Microwave frequency amplifier comprising: a. a conductive enclosure; b. a controlled charge carrier device having at least two terminals, said device being supported within said conductive enclosure; c. means in said enclosure defining a first radial mode resonator circuit between two of said at least two terminals and a second radial mode resonator circuit between one of said two terminals and said enclosure, said first and second resonator circuits being energized by operation of said controlled charge carrier device at microwave frequencies; and d. means coupling said first and second resonator circuits to provide a double-tuned resonator arrangement, thereby to provide increased gain-bandwidth for said amplifier. 7. The amplifier of claim 6 wherein said circuit defining means comprises a first conductive plate electrically connected to the other of said two terminals of said device and to said enclosure.
Claim 8
Dependent Claim
66 words
The amplifier of claim 7 wherein said conductive enclosure comprises a main body portion and at least one end wall and wherein said circuit defining means further comprises a second conductive plate electrically coupled to said one terminal, said first cavity being formed between said first and second plates and said second cavity being formed between said second plate and said at least one end wall.
Claim 9
Dependent Claim
25 words
The amplifier of claim 6 wherein said device is a triode, said one terminal being an anode terminal, said other terminal being a grid terminal.
Claim 10
Dependent Claim
25 words
The amplifier of claim 6 wherein said device is a transistor, said one terminal being a collector terminal, said other terminal being a base terminal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |