US4017805A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compensated electron beam deflection device
Assignee: United States Department of the Army
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Filing: 1976-01-08
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Granted: 1977-04-12
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Expires: 1996-01-08
Abstract
Abstract An electron beam deflection amplifier having two spaced parallel electron ams and a pair of spaced collector electrodes for intercepting the beams to provide an output beam current. The beams are deflected in opposite directions by the input signal to be amplified but are deflected in the same direction by external undesired stray fields. The collector electrodes are dimensioned and relatively positioned such that variable portions of both beams will be collected at both electrodes. Each collector electrode will intercept a portion of each beam and the portion of each beam not intercepted by one collector electrode will be intercepted by the other collector electrode. For desired input signals, the collector current outputs are additive. A stray magnetic field will deflect the electron beams in the same direction in which case the output current due to one beam substracts and cancels the output current from the other beam. In this manner the effect of external fields are compensated for and nullified.
Inventors
- 👤 Herbert M. Wagner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:31
CPC Classifications
H; H03; H03F; H03F5/00; H03F3/00; H03F3/54
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
233 words
An electron beam deflection amplifier comprising: means for generating a pair of like spaced parallel longitudinal electron beams, said beams being normally positioned symmetrically about a longitudinal axis; a pair of longitudinally spaced collector electrodes, each of said electrodes being disposed symmetrically about said longitudinal axis and across the path of both beams to intercept respective portions of each of said beams; output means responsive to the outputs of said collector electrodes to produce an output current; electrode means extending axially intermediate said beams and symmetrical with respect to said normal position of said beams and being responsive to applied input signals for transversely deflecting said beams in opposite directions about said longitudinal axis; said longitudinally spaced collector electrodes being so positioned relative to said beams such that when said beams are transversely deflected in opposite directions the beam current of one beam on one electrode increases and decreases in correspondence with the beam current of the other beam on said one electrode so that the respective collector electrode beam currents due to both beams are additive at each of said electrodes; and when said beams move transversely in the same direction the beam current of one beam on one electrode changes oppositely from the beam current of the other beam on said one electrode so that the respective collector beam currents due to both beams are negated at each of said electrodes.
Claim 2
Dependent Claim
233 words
An electron beam deflection amplifier comprising: means for generating a pair of like spaced parallel longitudinal electron beams, said beams being normally positioned symmetrically about a longitudinal axis; a pair of longitudinally spaced collector electrodes, each of said electrodes being disposed symmetrically about said longitudinal axis and across the path of both beams to intercept respective portions of each of said beams; output means responsive to the outputs of said collector electrodes to produce an output current; electrode means extending axially intermediate said beams and symmetrical with respect to said normal position of said beams and being responsive to applied input signals for transversely deflecting said beams in opposite directions about said longitudinal axis; said longitudinally spaced collector electrodes being so positioned relative to said beams such that when said beams are transversely deflected in opposite directions the beam current of one beam on one electrode increases and decreases in correspondence with the beam current of the other beam on said one electrode so that the respective collector electrode beam currents due to both beams are additive at each of said electrodes; and when said beams move transversely in the same direction the beam current of one beam on one electrode changes oppositely from the beam current of the other beam on said one electrode so that the respective collector beam currents due to both beams are negated at each of said electrodes.
Claim 3
Dependent Claim
55 words
The deflection amplifier in accordance with claim 1 wherein one of said electrodes is smaller to intercept inner portions of said beams and the other electrode is larger to intercept outer portions of said beams, those portions of each of the respective beams not intercepted by one collector electrode being intercepted by other collector electrode.
Claim 4
Dependent Claim
26 words
The deflection amplifier in accordance with claim 2 wherein the collector electrode proximal said beam generating means is an apertured electrode larger than the other electrode.
Claim 5
Dependent Claim
39 words
The deflection amplifier in accordance with claim 2 wherein the collector electrode proximal said beam generating means is the smaller of said pair of electrodes, said electrodes being in the form of parallel plates disposed one behind the other.
Claim 6
Dependent Claim
68 words
The deflection amplifier in accordance with claim 1 wherein said transverse deflecting means comprise an inner deflection electrode intermediate the proximal edges of said electron beams, and a pair of outer deflection electrodes spaced respectively from the distal edges of said electron beams, said outer deflection electrodes being connected to a common terminal and said input signals being applied between said common terminal and said intermediate deflection electrode.
Claim 7
Dependent Claim
26 words
The deflection amplifier in accordance with claim 5 wherein, the collector electrode proximal said beam generating means is the smaller of said pair of collector electrodes.
Claim 8
Dependent Claim
41 words
The deflection amplifier in accordance with claim 6 wherein each of said collector electrodes intercept portions of both of said beams, that portion of the respective beams not intercepted by said smaller collector electrode being intercepted by the other collector electrode.
Claim 9
Dependent Claim
44 words
The deflection amplifier in accordance with claim 2 wherein the collector electrodes are positioned such that under static conditions half of each beam is intercepted by said one collector electrode and the remaining half of each beam is intercepted by said other collector electrode.
Claim 10
Dependent Claim
44 words
The deflection amplifier in accordance with claim 6 wherein the collector electrodes are positioned such that under static conditions half of each beam is intercepted by said smaller collector electrode and the remaining half of each beam is intercepted by the other collector electrode.
Claim 11
Dependent Claim
19 words
The deflection amplifier in accordance with claim 5 wherein said intermediate deflection electrode is a serpentine slow-wave transmission line.
Claim 12
Dependent Claim
17 words
The deflection amplifier in accordance with claim 1 wherein said collector electrodes comprise electron bombarded semiconductor diodes.
Claim 13
Dependent Claim
17 words
The deflection amplifier in accordance with claim 10 wherein said collector electrodes comprise electron bombarded semiconductor diodes.
Claim 14
Dependent Claim
28 words
The deflection amplifier in accordance with claim 6 wherein said intermediate deflection electrode is a serpentine slow-wave transmission line and said collector electrodes are electron bombarded semiconductor diodes.
Claim 15
Dependent Claim
42 words
The deflection amplifier in accordance with claim 13 wherein said semiconductor diodes are positioned such that under static conditions half of each beam is intercepted by said smaller semiconductor diode and half of each beam is intercepted by the other semiconductor diode.
Claim 16
Dependent Claim
17 words
The deflection amplifier in accordance with claim 2 wherein said collector electrodes comprise electron bombarded semiconductor diodes.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |