US3882351A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microwave electron tube
Assignee: Individual
•
Filing: 1974-04-15
•
Granted: 1975-05-06
•
Expires: 1994-04-15
Abstract
Abstract A microwave electron tube with electrodes - a cathode, an anode and at least one grid. The cathode, the grid and the highfrequency leads coupled to them form the input circuit of the device. The anode, the grid and the high-frequency leads coupled to them form the output circuit of the device. Electric coupling between at least one of the electrodes and its high-frequency lead is accomplished by means of at least one microwave line section. One of the conductors of the microwave line is connected to the electrode and the other conductor, to its high-frequency lead. The two conductors are shorted at the ends opposite to the points at which they are connected to the electrode and to the high-frequency lead and are constructed in the form of surfaces of revolution the size of which is selected so that at the points of connection the impedance is substantially inductive. Such construction of the device makes it highly suitable for use in microwave power amplifiers which operate within a wide frequency band and provides a high efficiency and a high power gain of the device.
Inventors
- 👤 Vladimir Alexandrovic Ryabinin
- 👤 Vladimir Ivanovich Sadofiev
- 👤 Igor Mikhailovich Mitin
- 👤 Kira Boleslavovna Yankevich
- 👤 Evgeny Ivanovich Matrosov
- 👤 Anton Felixovich Leliovsky
- 👤 Karl Romanovich Terra
- 👤 Alexei Petrovich Kashirin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:54
CPC Classifications
H; H01; H01J; H01J21/00; H01J21/02; H01J21/06; H01J21/065
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
185 words
A microwave electron tube comprising: a plurality of electrodes including at least a first electrode, a second electrode arranged opposite said first electrode and at least one grid arranged between said first and second electrodes; highfrequency leads for each of said electrodes; means for electrically coupling each of said electrodes to its highfrequency lead, at least one of said means coupling one of said electrodes being constructed in the form of a section of a microwave line; a first conductor of said section of the microwave line being connected at one end to said one electrode; a second conductor of said section of the microwave line being connected at one end to the high-frequency lead of said one electrode, the other ends of said first and second conductors being electrically shorted, said first and second conductors being constructed in the form of surface of revolution whose size is selected so that the impedance at said point of connection is inductive in character; means for feeding supply voltages to said electrodes, and an evacuated envelope means enclosing said electrodes and said section of the microwave line.
Claim 2
Dependent Claim
185 words
A microwave electron tube comprising: a plurality of electrodes including at least a first electrode, a second electrode arranged opposite said first electrode and at least one grid arranged between said first and second electrodes; highfrequency leads for each of said electrodes; means for electrically coupling each of said electrodes to its highfrequency lead, at least one of said means coupling one of said electrodes being constructed in the form of a section of a microwave line; a first conductor of said section of the microwave line being connected at one end to said one electrode; a second conductor of said section of the microwave line being connected at one end to the high-frequency lead of said one electrode, the other ends of said first and second conductors being electrically shorted, said first and second conductors being constructed in the form of surface of revolution whose size is selected so that the impedance at said point of connection is inductive in character; means for feeding supply voltages to said electrodes, and an evacuated envelope means enclosing said electrodes and said section of the microwave line.
Claim 3
Dependent Claim
29 words
A microwave electron tube as claimed in claim 1, wherein said surfaces of revolution made up by said first and second conductors are arranged coaxially relative to each other.
Claim 4
Dependent Claim
37 words
A microwave electron tube as claimed in claim 1, wherein the electrical length of said section of the microwave line is less than 90*, which ensures the inductive character of the impedance at said points of connection.
Claim 5
Dependent Claim
51 words
A microwave electron tube as claimed in claim 3, wherein said surfaces of revolution have a constant crosssectional size along with length of said microwave line section and the length of said microwave line section is less than a quarter of a wavelength corresponding to the operating frequency of the tube.
Claim 6
Dependent Claim
29 words
A microwave electron tube as claimed in claim 4, wherein said surfaces of revolution made up by said first and second conductors are arranged coaxially relative to each other.
Claim 7
Dependent Claim
288 words
A microwave electron tube comprising: a plurality of electrodes including at least a first electrode, a second electrode arranged opposite said first electrode and at least one grid arranged between said first and second electrodes; high-frequency leads for each of said electrodes, said first electrode, said grid and the high-frequency leads thereof defining an input circuit of said tube; said second electrode, said grid and the high-frequency leads thereof defining an output circuit of said tube; means electrically connecting each of said electrodes to its respective high-frequency lead; at least one of said means coupling one of said electrodes being constructed in the form of a section of a microwave line; a first conductor of said section of the microwave line being connected at one end to said one electrode; a second conductor of said section of the microwave line being connected at one end to the high-frequency lead of said one electrode, the other ends of said first and second conductors being electrically shorted, said first and second conductors being constructed in the form of surfaces of revolution whose size is selected so that at said points of connection the impedance is inductive in character and commensurable in magnitude with a capacitive reactance between said one electrode and an adjacent electrode of the same circuit of which said one electrode forms a parts connected to said conductor and so that the value of the wave drag of said section of the microwave line, at least across that portion thereof near said points of connection, is not less than said value of said capacitive reactance; means for feeding supply voltages to said electrodes, and an evacuated envelope means enclosing said electrodes and said section of the microwave line.
Claim 8
Dependent Claim
288 words
A microwave electron tube comprising: a plurality of electrodes including at least a first electrode, a second electrode arranged opposite said first electrode and at least one grid arranged between said first and second electrodes; high-frequency leads for each of said electrodes, said first electrode, said grid and the high-frequency leads thereof defining an input circuit of said tube; said second electrode, said grid and the high-frequency leads thereof defining an output circuit of said tube; means electrically connecting each of said electrodes to its respective high-frequency lead; at least one of said means coupling one of said electrodes being constructed in the form of a section of a microwave line; a first conductor of said section of the microwave line being connected at one end to said one electrode; a second conductor of said section of the microwave line being connected at one end to the high-frequency lead of said one electrode, the other ends of said first and second conductors being electrically shorted, said first and second conductors being constructed in the form of surfaces of revolution whose size is selected so that at said points of connection the impedance is inductive in character and commensurable in magnitude with a capacitive reactance between said one electrode and an adjacent electrode of the same circuit of which said one electrode forms a parts connected to said conductor and so that the value of the wave drag of said section of the microwave line, at least across that portion thereof near said points of connection, is not less than said value of said capacitive reactance; means for feeding supply voltages to said electrodes, and an evacuated envelope means enclosing said electrodes and said section of the microwave line.
Claim 9
Dependent Claim
28 words
A microwave electron tube as claimed in claim 6, wherein said surfaces of revolution formed by said first and second conductors are arranged coaxially relative to each other.
Claim 10
Dependent Claim
36 words
A microwave electron tube as claimed in claim 6, wherein the electrical length of said section of the microwave line is less than 90*, which ensures the inductive character of impedance at said points of connection.
Claim 11
Dependent Claim
52 words
A microwave electron tube as claimed in claim 8, wherein said surfaces of revolution have a constant crosssectional size along said length of said microwave line section said length of said microwave line section being less than a quarter of a wavelength corresponding to the operating frequency of said microwave electron tube.
Claim 12
Dependent Claim
28 words
A microwave electron tube as claimed in claim 9, wherein said surfaces of revolution formed by said first and second conductors are arranged coaxially relative to each other.
References Cited (Backward Citations)
US2389271A
Cited
US2462877A
Cited
US2870374A
Cited
US2909698A
Cited
US2945158A
Cited
US3273011A
Cited
US3466497A
Cited
US3492528A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |