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| Number | Title | Issue Date |
| 7164234 | High-power microwave system employing a phase-locked array of inexpensive commercial magnetrons A high-power microwave generator employing a plurality of inexpensive commercial magnetron tubes cross-coupled by means of a secondary coupling path between each magnetron output pair, whereby a portion of the output energy from a first magnetron tube is injected in... | 01/16/2007 |
| 6236161 | Crossed-field device A crossed-field device such as a crossed-field amplifier or magnetron has a generally peripheral cathode body portion and an anode which cooperates with a crossed magnetic field to maintain emitted electrons on cycloidal and amplify an rf input signal as ... | 05/22/2001 |
| 6132565 | Magnetron assembly equipped with traversing magnets and method of using A magnetron assembly for sputter deposition and a method for using such assembly are described. The novel magnetron assembly is equipped with traversing magnets that are capable of moving in a radial direction toward and away from a center axis of the mag... | 10/17/2000 |
| 5412281 | Phase smoothing cathode for reduced noise crossed-field amplifier A crossed-field amplifier (CFA) includes a cylindrical cathode having an emitting surface coaxially disposed within an annular anode structure. The cathode has at least one circumferential groove disposed in the emitting surface. The grooves are relativel... | 05/02/1995 |
| 5327094 | Jitter suppression in crossed-field amplifier by use of field emitter A crossed-field amplifier is provided which has an anode and a cathode creating an electric field across a magnetic field formed in an interaction area. A field emitter is disposed within a slot formed on an outer surface of the cathode. The field emitter... | 07/05/1994 |
| 5280218 | Electrodes with primary and secondary emitters for use in cross-field tubes A cathode of a crossed field device includes a first electrode and a second electrode disposed about and dielectrically spaced from the first electrode. In a preferred embodiment the electrode comprises a pair of electrodes, a first one of the pair being ... | 01/18/1994 |
| 4975656 | Enhanced secondary electron emitter The present invention discloses an enhanced secondary electron emitter cathode suitable for use in a typical crossed-field amplifiers. The emitter surfaces of the cathode are formed into protuberances or knurls. The cathode's secondary emission characteri... | 12/04/1990 |
| 4894586 | Crossed-field amplifier bias circuit and method for improved starting The present invention discloses a cross-field amplifier having an anode and cathode with a pair of permanent magnets which create a magnetic field perpendicular to an electric field created between the anode and cathode. An electric bias circuit is connec... | 01/16/1990 |
| 4831335 | High gain miniature crossed-field amplifier There is provided a miniature high gain forward wave crossed-field amplifier wherein the anode slow wave structure includes double helix coupled vanes having a predetermined pitch such that the distance between the plane of symmetry of each vane is substa... | 05/16/1989 |
| 4814720 | Low noise crossed-field amplifier In a forward wave low noise cross-field amplifier a slow wave structure is disposed about a predetermined portion of the cathode. The slow wave structure of the cathode is accurately proportioned and spaced to have a dispersion curve near to the dispersio... | 03/21/1989 |
| 4757269 | Multi-gigawatt high-efficiency RF amplifier An RF amplifier wherein an IREB interacts with RF energy from an RF energy source coupled via an RF cavity to a tube drift region where the IREB is modulated at the frequency of the RF energy source, to provide high gain amplification at high power and hi... | 07/12/1988 |
| 4634992 | Magnetron amplifier power combiner A microwave circuit for combining the high output power of two phase and amplitude controllable amplifiers (e.g. magnetron amplifiers) is described. The circuit uses a "Magic T" circuit to reduce the magnitude of the amplified power which must be dissipat... | 01/06/1987 |
| 4571552 | Phase-locked magnetron system Phase locking of the output signal of a magnetron with a frequency source signal is obtained by a phase comparison of the output signal and source signal to obtain an error signal which energizes a winding of the magnetron magnet to thereby change the flu... | 02/18/1986 |
