Patent US4042837A successfully refreshed from Google Patents.
US4042837A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Short pulse solid state-magnetic modulator for magnetron transmitter
Assignee: United States Department of the Navy
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Filing: 1976-11-15
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Granted: 1977-08-16
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Expires: 1996-11-15
Abstract
Abstract A solid state, magnetic modulator for a magnetron transmitter having a poon of its storage circuit coupled to discharge through a series of SCR switching modules such that the charge on the remainder of the storage circuit and the discharge overshoot are additive to provide a high power pulse of extremely short duration to the magnetron.
Inventors
- 👤 Reuben E. Nyswander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:48
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/53; H03K3/57
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
187 words
A magnetic modulator for generating short pulses for a magnetron transmitter comprising: an electrical charge source having a voltage E; storage means coupled to said source adapted to store a charge with a resultant voltage 2E; said storage means having at least two conductive paths; a storage element in each of said conductive paths adapted to be charged to a voltage 2E; switching means coupled across said storage means including means in one of said at least two conductive paths for providing discharge path for one of said at least two storage elements so that discharge takes place in a relatively short time resulting in an overshoot whereby said one of said at least two storage elements after discharge has a voltage thereon negative in polarity to that originally thereon; means included in the other of said at least two conductive paths for providing the resulting negative charge on said at least one storage element to be additive with the charge on the other of said at least two storage elements thereby resulting in a resultant output pulse for said magnetron transmitter having a value approximately 4E.
Claim 2
Dependent Claim
187 words
A magnetic modulator for generating short pulses for a magnetron transmitter comprising: an electrical charge source having a voltage E; storage means coupled to said source adapted to store a charge with a resultant voltage 2E; said storage means having at least two conductive paths; a storage element in each of said conductive paths adapted to be charged to a voltage 2E; switching means coupled across said storage means including means in one of said at least two conductive paths for providing discharge path for one of said at least two storage elements so that discharge takes place in a relatively short time resulting in an overshoot whereby said one of said at least two storage elements after discharge has a voltage thereon negative in polarity to that originally thereon; means included in the other of said at least two conductive paths for providing the resulting negative charge on said at least one storage element to be additive with the charge on the other of said at least two storage elements thereby resulting in a resultant output pulse for said magnetron transmitter having a value approximately 4E.
Claim 3
Dependent Claim
20 words
A magnetic modulator as set forth in claim 1 wherein; each of said conducting path means is an inductive reactor.
Claim 4
Dependent Claim
42 words
A magnetic modulator as set forth in claim 2 wherein; the discharge path for said one of said at least two storage elements comprises said switching means in series with the inductive reactor in one of said at least two conductive paths.
Claim 5
Dependent Claim
28 words
A magnetic modulator as set forth in claims 2 and further including; pulse transformer means connected in series in the other of said at least two conductive paths.
Claim 6
Dependent Claim
51 words
A magnetic modulator as set forth in claim 4 wherein; the discharge path for said one of said at least two storage elements when it has said negative charge thereon comprising said other of said at least two conductive paths and said pulse transformer means whereby a very short pulse results.
Claim 7
Dependent Claim
25 words
A magnetic modulator as set forth in claim 5 including; a magnetron operatively coupled to said pulse transformer means and receiving said very short pulse.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |