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7545226 |
Magnetron oscillator
A magnetron (2), a launcher (4) which extracts the output power of the magnetron (2), an impedance generator (5) having one terminal connected to the output terminal of the launcher (4), and a...
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6259208 |
Optical tuning of magnetron using leaky light structure
An optically tuned magnetron oscillator employs materials whose electrodynamic properties are altered by the absorption of light. A probe constructed from a leaky dielectric light guide coated with...
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6064154 |
Magnetron tuning using plasmas
Improved magnetron oscillators that controllably form a plasma within each of its resonant cavities to rapidly change the resonant frequency of each cavity. The present invention also provides for...
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5894199 |
Tertiary field tuning of positive anode magnetron
A crossed-field device comprises a cathode having an electron emitting surface and an anode structure radially spaced from the cathode. The anode structure has a plurality of vanes extending in...
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5537084 |
Method for improving spectrum quality of low power pulsed anode magnetrons
An improved low power pulsed anode magnetron is provided having a cylindrical cathode centrally disposed within a plurality of radial anode vanes. An interaction region is provided between the...
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5537002 |
Frequency tunable magnetron including at least one movable backwall
There is provided a tunable high power magnetron. An annular anode circumscribes a cathode and contains a plurality of resonating cavities. The volume of the resonating cavities determines the...
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5515011 |
Pulsed magnetron circuit with phase locked loop
A semiconductor diode is connected across the cathode-to-anode path of a magnetron and through a storage capacitor and collector resistor to a supply voltage for enabling charging of the capacitor....
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5495145 |
Pseudo-spring loading mechanism for magnetron tuner
A apparatus for tuning a resonant cavity of a magnetron is provided which prevents undesired frequency fluctuation during thermal cycling or vibration. The magnetron has an axially disposed...
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5449972 |
Low-torque magnetron tuning device
A low-torque tuning apparatus is provided for use in a magnetron having an electron emitting cathode coaxially disposed within an anode cavity. The tuning apparatus includes a tuner drive capable...
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5041801 |
Magnetron tuning systems
A magnetron is tuned by a co-axial transmission line co-axial with the axis of the magnetron and a radial transmission line linking the co-axial line to a plurality of sampling points symmetrically...
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5017891 |
Magnetrons with resonator element for stabilizing output radiation frequency
The performance of a magnetron may be degraded by its output frequency changing. This degradation may be reduced by fixing a resonator element in the magnetron's output waveguide enabling...
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4881162 |
Frequency control system
A frequency control system is provided for controlling the radio frequency of a mechanically tuned coaxial magnetron under a wide variety of environmental conditions by initially tuning the...
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4831341 |
Magnetron with tuning member moveable by passing current through it
A magnetron includes a cathode and vane type anode structure. The frequency of oscillation of a microwave output signal of the magnetron is tunable by means of a tuning member, which is in the form...
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4745336 |
Microwave generation by virtual cathode with phase velocity matching
The present invention provides a vircator with improved efficiency. An elongated anode is aligned with an elongated cathode so as to produce an elongated virtual cathode when a direct current...
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4672340 |
Multipactor discharge tuned resonant cavity devices
A resonant cavity device--particularly a magnetron oscillator--has a separate resonator coupled to a resonant cavity of the device. The separate resonator consists of a resonant transmission line...
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4636750 |
Magnetron with frequency sensor arrangement
In a magnetron a spinner (22), rotatable on a longitudinal axis (x) has a number of evenly spaced markings formed circumferentially on an exterior surface. The markings are sensed, as the spinner...
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4636749 |
Pulsed magnetron tube having improved electron emitter assembly
A tuning assembly (42) is disclosed for selectively oscillating the frequency of an electromagnetic field within a hermetically sealed pulsed magnetron (12), comprising a rigid, hermetically sealed...
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4635001 |
Bearing arrangement in a tunable magnetron
A bearing arrangement in a tunable magnetron, in which a sleeve-shaped body (12) is journalled on a central column (10) by means of two bearings (14, 15). The distance between the inner rings (18,...
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4613788 |
Arrangement in a tunable high frequency transmitter tube
An arrangement for transmission of a predetermined fixed frequency by means of a tunable high frequency transmitter tube, such as a magnetron, the tuning of which can be varied periodically by...
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4604587 |
Tunable magnetron with internal tuning motor
A rotatable tuning body is driven by a positioning motor such as a stepper motor, for varying the tuning frequency of a magnetron. The motor rotor is situated within the evacuated space of the...
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4555680 |
Magnetron tuned programmably using step motor
A resonant-cavity type electronic tube having mechanically-operable tuning vanes associated with its resonant-cavity structure and disposed within an evacuable envelope. A support member is...
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4531104 |
Tunable magnetron of the coaxial-vacuum type
A tunable, coaxial-vacuum magnetron is shown having a cathode surrounded by an anode within a surrounding evacuated anode cavity. Located between the cathode-anode interaction space and an output...
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4527094 |
Altitude compensation for frequency agile magnetron
A frequency agile magnetron employs an altitude compensation vacuum envelope external to the vacuum envelope of the magnetron. The tuning assembly of the magnetron includes a tuning plunger coupled...
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4518932 |
Coaxial magnetron having cavity walls vibrated by tuning fork
A co-axial magnetron is provided with a cavity whose resonant frequency can be very rapidly altered in a cyclic manner so that the microwave output frequency of the magnetron can be chosen to lie...
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4345220 |
High power microwave generator using relativistic electron beam in waveguide drift tube
Coherent microwave radiation is generated in and transmitted through a waveguide/drift tube by means of an injected relativistic electron beam the parameters of which, in combination with the...
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4331935 |
Tuning apparatus for a radio frequency power device
A tuning assembly is disclosed for selectively oscillating the frequency of an electromagnetic field within a hermetically sealed device, which device includes a rigid, hermetically sealed housing,...
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4330760 |
System for correlating the operating frequencies of two variable-frequency microwave generators
Two variable-frequency microwave generators, i.e. a coaxial magnetron producing outgoing waves and a voltage-controlled oscillator emitting a heterodyning signal for incoming waves of a radar...
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4313091 |
Crankshaft tuning mechanisms for microwave oscillators
A resonant cavity of a microwave generator, such as a magnetron oscillator, is provided with a tuning piston which is rectilinearly displaceable between two terminal positions, corresponding to...
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4311968 |
Magnetron having cavity wall vibrated by tuning fork
A co-axial magnetron in which the microwave output frequency can be rapidly altered within a particular frequency band. A movable tuning plate is coupled to a mechanical tuning fork which is set...
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4296385 |
X-Ray assisted multipactor discharge tuned resonant cavity device
A multipactor discharge tuned resonant cavity device, e.g. a magnetron, is irradiated with X-rays in order to assist the starting of the multipactor discharge. The X-rays are produced by electrons...
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4247828 |
Reciprocating piston tuning mechanism for a microwave oscillator
A resonant cavity of a microwave generator, such as a magnetron oscillator, is provided with a tuning piston which is displaceable between two terminal positions, corresponding to respective...
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4234855 |
System for linearly tuning a microwave oscillator
A resonant cavity of a microwave generator, such as a magnetron oscillator, is provided with a tuning piston which is displaceable between two terminal positions, corresponding to respective...
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4162459 |
Magnetron tuning circuit
A circuit for the modulation of the frequency of radiation produced by a magnetron includes a directional coupler connected to the output port of the magnetron, a circulator coupled between the...
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4115746 |
Multipactor discharge tuned resonant cavity devices
In a vane type magnetron oscillator a resonant co-axial transmission line breaks through the wall of the anode block to couple to two adjacent cavities on either side of a vane. Positioned at a...
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4105951 |
Multipactor discharge arrangements
A multipactor discharge tuned resonant cavity device, e.g. a magnetron, is arranged with two multipactor discharge electrodes so that in a discharge condition a net current flows from one electrode...
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3967155 |
Electronic frequency tuning magnetron
Cavity resonator electronic tubes, in particular magnetrons, with an electronic tuning system. The tuning systems in accordance with the invention consist of multipactor elements arranged directly...
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3936766 |
Magnetron with capacitively coupled external cavity resonator
A magnetron adapted for operation with an ungrounded power supply, has mounted thereon and tightly coupled thereto an external cavity resonator having coaxial first and second openings in opposite...
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3927347 |
Microwave tube using electronically tunable cavity resonator
A microwave cavity resonator, such as the circular electric mode resonator of a coaxial magnetron, is electronically tuned by coupling an electronically tunable array of reactive loading elements...
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3904919 |
Rotary tuner for a circular electric mode crossed field tube
A coaxial magnetron of the type including a circular electric mode cavity coupled to a vane resonator system is tuned by means of a tuning structure movable in the circular electric mode cavity....
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3885221 |
Coupling arrangements in resonant devices
The invention relates to resonant devices such as cavity magnetrons having a plurality of resonant cavities in a common block of which at least two adjacent cavities exhibit magnetic fields of...
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3748592 |
MAGNETRON OSCILLATORS
A magnetron oscillator having the normally provided cavities of a magnetron oscillator, has a further resonant cavity coupled to one of the normally provided cavities by an inductive loop. The...
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3694771 |
MAGNETICALLY ACTUATED TUNING METHOD FOR GUNN OSCILLATORS
A tunable microwave generator based on the Gunn effect is disclosed. The generator includes a semiconductor material which exhibits the Gunn effect when current flows therethrough between anode and...
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3671801 |
MAGNETRON RAPID FREQUENCY CHANGER
A magnetron is rapidly tuned over a wide bandwidth by inserting and withding a conductive tuning element in an anode cavity. The conductive element is mounted on a plate which is moved in...
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3614664 |
CLASS C BRIDGE OSCILLATOR
An oscillator bridge circuit including a pair of input terminals adapted for connection to a direct current source; two pairs of semiconductor devices, the two devices of each pair being connected...
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3599110 |
SELF-CLOCKING SYSTEM HAVING A VARIABLE FREQUENCY OSCILLATOR LOCKED TO LEADING EDGE OF DATA AND CLOCK
The invention relates to a self-clocking system having a variable frequency oscillator which corrects for changes in frequency and phase between a data signal and a clock signal, such that the data...
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3548312 |
DEVICE FOR TRANSMITTING AN ACCURATELY DETERMINED FIXED FREQUENCY WITH A TUNABLE HIGH FREQUENCY TRANSMITTER TUBE
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3478247 |
MICROWAVE TUNER HAVING A RAPID TUNING RATE
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3478246 |
PIEZOELECTRIC BIMORPH DRIVEN TUNERS FOR ELECTRON DISCHARGE DEVICES
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3441794 |
DITHER-TUNED TUNABLE MICROWAVE TUBE APPARATUS
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3441796 |
MAGNETRONS HAVING CYCLICALLY VARYING FREQUENCIES
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