US4149167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radar jamming transmitter
Assignee: United States Department of the Army
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Filing: 1955-03-04
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Granted: 1979-04-10
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Expires: 1975-03-04
Abstract
Abstract 1. An automatic radar jamming transmitter comprising a plurality of voltatuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise simultaneously generated frequency modulated noise signals, means for amplifying said noise signals, and means in circuit with said amplifying means for producing random changes in the amplitudes of said noise signals.
Inventors
- 👤 Philip H. Peters, Jr.
- 👤 Donald A. Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:36
CPC Classifications
G; G01; G01S; G01S7/00; G01S7/02; G01S7/38
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
102 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise simultaneously generated frequency modulated noise signals, means for amplifying said noise signals, and means in circuit with said amplifying means for producing random changes in the amplitudes of said noise signals.
Claim 2
Dependent Claim
102 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise simultaneously generated frequency modulated noise signals, means for amplifying said noise signals, and means in circuit with said amplifying means for producing random changes in the amplitudes of said noise signals.
Claim 3
Dependent Claim
26 words
The transmitter in accordance with claim 1 wherein said prescribed discrete frequencies are each substantially at the center of the range of frequencies for respective magnetrons.
Claim 4
Dependent Claim
117 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons, each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, a video noise source having its output coupled to each of said discrete voltage tuning means for simultaneously varying each of said voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise frequency modulated noise signals, a wideband amplifier responsive to said noise signals, and means in circuit with said amplifier for producing random changes in the amplitudes of said noise signals.
Claim 5
Dependent Claim
117 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons, each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generate radio-frequency energy at prescribed discrete frequencies, a video noise source having its output coupled to each of said discrete voltage tuning means for simultaneously varying each of said voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise frequency modulated noise signals, a wideband amplifier responsive to said noise signals, and means in circuit with said amplifier for producing random changes in the amplitudes of said noise signals.
Claim 6
Dependent Claim
124 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generates radio-frequency energy at prescribed discrete frequencies, a first video noise generator having its output coupled simultaneously to each of said discrete voltage tuning means for varying each of said voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise frequency modulated noise signals, a wideband amplifier responsive to said noise signals, and a second video noise generator having its output coupled to said amplifier for producing random changes in the amplitude of said noise signals.
Claim 7
Dependent Claim
124 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generates radio-frequency energy at prescribed discrete frequencies, a first video noise generator having its output coupled simultaneously to each of said discrete voltage tuning means for varying each of said voltage tuning means in a random manner whereby the discrete outputs of said magnetrons comprise frequency modulated noise signals, a wideband amplifier responsive to said noise signals, and a second video noise generator having its output coupled to said amplifier for producing random changes in the amplitude of said noise signals.
Claim 8
Dependent Claim
33 words
The jamming transmitter in accordance with claim 4 and further including means for independently controlling the magnitude of the output of said first noise generator applied to each of said voltage tuning means.
Claim 9
Dependent Claim
107 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generates radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning in accordance with a periodically generated signal whereby the discrete outputs of said magnetrons comprise frequency modulated signals each having a set of coherent sidebands, means for amplifying said signals, and a video noise generator having its output coupled to said amplifier for randomly modulating said signals in amplitude.
Claim 10
Dependent Claim
107 words
An automatic radar jamming transmitter comprising a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, discrete voltage tuning means in circuit with each of said magnetrons respectively whereby each of said magnetrons initially and simultaneously generates radio-frequency energy at prescribed discrete frequencies, means for simultaneously varying said discrete voltage tuning in accordance with a periodically generated signal whereby the discrete outputs of said magnetrons comprise frequency modulated signals each having a set of coherent sidebands, means for amplifying said signals, and a video noise generator having its output coupled to said amplifier for randomly modulating said signals in amplitude.
Claim 11
Dependent Claim
22 words
The transmitter in accordance with claim 6 wherein the rate of periodic frequency modulation is less than the amplifier noise modulation bandwidth.
Claim 12
Dependent Claim
16 words
The transmitter in accordance with claim 6 wherein said periodically generated signal is a sine wave.
Claim 13
Dependent Claim
87 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, varying the individual voltage tuning applied to each of said magnetrons in a random manner simultaneously to produce frequency modulated noise signals, amplifying said frequency modulated noise signals, and randomly modulating the amplitude of said amplified noise signals.
Claim 14
Dependent Claim
87 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, varying the individual voltage tuning applied to each of said magnetrons in a random manner simultaneously to produce frequency modulated noise signals, amplifying said frequency modulated noise signals, and randomly modulating the amplitude of said amplified noise signals.
Claim 15
Dependent Claim
109 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, generating random video noise, simultaneously varying the individual voltage tuning applied to each of said magnetrons by said video noise to produce discrete frequency modulated noise signals, independently adjusting the magnitude of the video noise applied to the voltage tuning of each magnetron, amplifying said frequency modulated noise signals, and amplitude modulating said amplified noise signals in a random manner.
Claim 16
Dependent Claim
109 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, generating random video noise, simultaneously varying the individual voltage tuning applied to each of said magnetrons by said video noise to produce discrete frequency modulated noise signals, independently adjusting the magnitude of the video noise applied to the voltage tuning of each magnetron, amplifying said frequency modulated noise signals, and amplitude modulating said amplified noise signals in a random manner.
Claim 17
Dependent Claim
114 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, varying the individual voltage tuning applied to each of said magnetrons in a random manner simultaneously to produce frequency modulated noise signals, varying the individual voltage tuning applied to each of said magnetrons in accordance with a periodically generated signal for producing discrete frequency modulated signals each having a set of coherent sidebands, amplifying said signals, and randomly modulating the amplitude of said amplified signals.
Claim 18
Dependent Claim
114 words
In a transmitter having a plurality of voltage-tuned magnetrons each adapted to be tuned over a prescribed wide range of frequencies, the method of producing radar jamming signals comprising the steps of individually voltage tuning each of said magnetrons for producing simultaneously generated radio-frequency energy at prescribed discrete frequencies, varying the individual voltage tuning applied to each of said magnetrons in a random manner simultaneously to produce frequency modulated noise signals, varying the individual voltage tuning applied to each of said magnetrons in accordance with a periodically generated signal for producing discrete frequency modulated signals each having a set of coherent sidebands, amplifying said signals, and randomly modulating the amplitude of said amplified signals.
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) | 1982-04-09 | 1982-10-09 | 1983-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-09 | 1986-10-09 | 1987-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-09 | 1990-10-09 | 1991-04-10 | $7700.00 | Window Closed / Lapsed |