Patent US3681656A successfully refreshed from Google Patents.
US3681656A
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US
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High power wide bandwidth pulse generator
Assignee: IKOR Inc
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Filing: 1970-09-23
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Granted: 1972-08-01
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Expires: 1990-09-23
Abstract
Abstract A pulse generator, particularly useful for synthetic generation of microwaves, in the form of a superatmospheric gas-filled elongated tube having coaxial conductors. The outer conductor is insulated from the inner conductor, and the latter includes a small, air-filled gap of less than 4 mil inches. The central conductor facing one end of the gap is a short (ca. 1 inch) charging line connected in series to a current limiting high resistive impedance. Due to pressurized gas in the short-space gap, very stable pulses with a very accurately controlled repetition rate and pulse height can be produced by suitable modulation. The pulses can exceed several kv. pulse amplitude when the device is powered from a high voltage pulse driving source applied across the outer conductor and the current limiting impedance.
Inventors
- 👤 Peter G Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:42
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/537; H03K3/57; H03K3/80
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
120 words
In a pulse generator having a sealable elongated envelope containing therein a gaseous atmosphere at superatmospheric pressure, a pair of coaxial spaced-apart conductors extending along said envelope, at least the inner conductor being disposed within said envelope and having opposite ends extending outwardly from corresponding ends of said envelope, said inner conductor having a gap therein of less than about 4 mil inches, a chargestorage section immediately adjoining said gap, and a resistive impedance coupled between said charge-storage section and a corresponding end of said inner conductor; the improvement comprising means for applying a series of high voltage pulses at a substantially fixed amplitude across the outer conductor and the end of the inner conductor directly connected to said impedance.
Claim 2
Dependent Claim
120 words
In a pulse generator having a sealable elongated envelope containing therein a gaseous atmosphere at superatmospheric pressure, a pair of coaxial spaced-apart conductors extending along said envelope, at least the inner conductor being disposed within said envelope and having opposite ends extending outwardly from corresponding ends of said envelope, said inner conductor having a gap therein of less than about 4 mil inches, a chargestorage section immediately adjoining said gap, and a resistive impedance coupled between said charge-storage section and a corresponding end of said inner conductor; the improvement comprising means for applying a series of high voltage pulses at a substantially fixed amplitude across the outer conductor and the end of the inner conductor directly connected to said impedance.
Claim 3
Dependent Claim
52 words
The improvement in a pulse generator as defined in claim 1 wherein the means for applying said pulses comprises charge storage means; means for resonantly charging said charge storage means; means for periodically discharging said charge storage means; and means for clipping pulses formed by the discharge of said charge storage means.
Claim 4
Dependent Claim
31 words
The improvement in a pulse generator as defined in claim 2 wherein said means for discharging is operable at a predetermined repetition rate. said charge storage means from said supply at
Claim 5
Dependent Claim
96 words
A pulse generator as defined in claim 1 wherein said applying means is a modulator circuit comprising a D-C power supply; charge storage means; means for charging said charge storage means from said supply at a voltage of approximately twice the voltage of said supply; a pulse transformer; means for switching said stored charge through the primary winding of said transformer at a predetermined pulse repetition rate so as to provide a plurality of driving pulses and; means for clipping said driving pulses to an amplitude value which is substantially the same from pulse to pulse.
Claim 6
Dependent Claim
37 words
A pulse generator as defined in claim 4 wherein said means for clipping comprises unilateral current conductive means connecting the secondary winding of said transformer to an RC circuit having values selected to determine said amplitude value.
Claim 7
Dependent Claim
38 words
A pulse generator as defined in claim 4 wherein said means for clipping comprises unilateral current conductive means connecting the secondary winding of said transformer to a source of substantially constant D-C voltage at substantially said amplitude value.
Claim 8
Dependent Claim
117 words
A pulse generator having a sealable elongated envelope containing therein gaseous atmosphere at superatmospheric pressure; a pair of coaxial spaced-apart conductors extending along said envelope, at least the inner conductor being disposed within said envelope and having opposite ends extending outwardly from corresponding ends of said envelope; said inner conductor having a gap therein of less than about 4 mil inches, a charge-storage section immediately adjoining said gap, and a resistive impedance coupled between said charge-storage section and a corresponding end of said inner conductor; and means for applying high voltage pulses of a predetermined repetition rate below about 1 KHz between the outer conductor and the end of the inner conductor directly connected to said impedance.
Claim 9
Dependent Claim
117 words
A pulse generator having a sealable elongated envelope containing therein gaseous atmosphere at superatmospheric pressure; a pair of coaxial spaced-apart conductors extending along said envelope, at least the inner conductor being disposed within said envelope and having opposite ends extending outwardly from corresponding ends of said envelope; said inner conductor having a gap therein of less than about 4 mil inches, a charge-storage section immediately adjoining said gap, and a resistive impedance coupled between said charge-storage section and a corresponding end of said inner conductor; and means for applying high voltage pulses of a predetermined repetition rate below about 1 KHz between the outer conductor and the end of the inner conductor directly connected to said impedance.
Claim 10
Dependent Claim
13 words
A pulse generator as defined in claim 7 wherein said gas is nitrogen.
Claim 11
Dependent Claim
15 words
A pulse generator as defined in claim 8 wherein said gas is an Inert gas.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |