Yanxia X Li

US Patent:

20040222744, Nov 11, 2004

Filed:

Nov 19, 2003

Appl. No.:

10/718258

Inventors:

Robert Tornoe - Sunol CA, US
Yanxia Li - Pleasanton CA, US
Paul Krzeminski - San Mateo CA, US
Edmund Davies - Orinda CA, US
Leroy Higgins - Newark CA, US
Gordon Lavering - Belmont CA, US

Assignee:

Communications & Power Industries, Inc.,

International Classification:

H01J025/34

US Classification:

315/003500

Abstract:

An electrode structure for a vacuum tube is formed by having a ceramic insulating body act as the tube wall. Electrode areas are formed on the inside of the tube by coating the inside of the tube wall with a conductor. These electrode areas are then coupled, as necessary, to external electronic circuits. The coupling may be performed by through-wall connections, metallized abutting connections and other conventional means. The ceramic insulating body may be generally cylindrical in shape and may be formed of a material such as aluminum nitride, beryllium oxide, aluminum oxide and the like.

US Patent:

20060091831, May 4, 2006

Filed:

Nov 4, 2004

Appl. No.:

10/982192

Inventors:

Heinz Bohlen - Kehl, DE
Yanxia Li - Pleasanton CA, US
Paul Krzeminski - San Mateo CA, US
Edmund Davies - Orinda CA, US
Robert Tornoe - Sunol CA, US

International Classification:

H05H 13/00

US Classification:

315502000

Abstract:

An inductive output tube (IOT) operates in a frequency range above 1000 MHz. An output window may be provided to separate a vacuum portion of the IOT from an atmospheric pressure portion of the IOT, the output window being surrounded by a cooling air manifold, the manifold including an air input port and a plurality of apertures permitting cooling air to move from the port, through the manifold and into the atmospheric pressure portion of the IOT. The output cavity may include a liquid coolant input port; a lower circular coolant channel coupled to receive liquid coolant from the liquid coolant input port; a vertical coolant channel coupled to receive liquid coolant from the lower circular coolant channel; an upper circular coolant channel coupled to receive liquid coolant from the vertical coolant channel; and a liquid coolant exhaust port coupled to receive liquid coolant from the upper circular coolant channel.

US Patent:

20070080762, Apr 12, 2007

Filed:

Dec 4, 2006

Appl. No.:

11/633850

Inventors:

Heinz Bohlen - Kehl, DE
Yanxia Li - Pleasanton CA, US
Paul Krzeminski - San Mateo CA, US
Edmund Davies - Orinda CA, US
Robert Tornoe - Sunol CA, US

Assignee:

Communications & Power Industries, Inc. - Palo Alto CA

International Classification:

H01P 7/06

US Classification:

333227000

Abstract:

An inductive output tube (IOT) operates in a frequency range above 1000 MHz. An output window may be provided to separate a vacuum portion of the IOT from an atmospheric pressure portion of the IOT, the output window being surrounded by a cooling air manifold, the manifold including an air input port and a plurality of apertures permitting cooling air to move from the port, through the manifold and into the atmospheric pressure portion of the IOT. The output cavity may include a liquid coolant input port; a lower circular coolant channel coupled to receive liquid coolant from the liquid coolant input port; a vertical coolant channel coupled to receive liquid coolant from the lower circular coolant channel; an upper circular coolant channel coupled to receive liquid coolant from the vertical coolant channel; and a liquid coolant exhaust port coupled to receive liquid coolant from the upper circular coolant channel.