IP Library › Granted Patent US 9,147,549
Granted Patent B2
US 9,147,549 · App. 13/424,460 · Granted Sep 29, 2015

Crossed-field amplifiers with anode/cathode structures for reduced spurious emissions

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Quick Facts
Patent No.
US 9,147,549
App. No.
13/424,460
Granted
Sep 29, 2015
Kind
B2
Abstract

Various crossed-field amplifiers (CFAs) are disclosed herein. In one embodiment, the geometry of the cathode and/or the anode reduces the velocity of the electrons as they travel near the anode drift block to increase the distribution of the electrons in the drift gap. In another embodiment, an abrupt geometric change to the cathode at the beginning or the end of the anode drift block can disperse the electrons, thereby increasing the rate of mixing and diffusion. By increasing the distribution of the electrons, the peak amplitude of spurious emissions produced by a CFA can be reduced.

Claims (22)

1. A crossed-field amplifier comprising:

an input coupler for receiving an RF wave;

an output coupler for transporting an amplified RF wave;

a cathode having a substantially-cylindrical shape;

an anode comprising an anode drift block positioned between the input coupler and the output coupler;

wherein the cathode has a first section having a first radius and a second section having a second radius that is greater than the first radius, the first section of the cathode being adjacent to the anode drift block;

wherein the cathode radii consist of the first radius, a first step to the second radius, the second radius, and a second step back to the first radius;

wherein the radii of the first and second sections are selected such that electrons are dispersed as they move in a space adjacent to the cathode and the anode drift block;

wherein the anode drift block extends in a range of around 30-90 degrees.

2. The device of claim 1 , wherein a magnetic field is oriented perpendicular to the first and second radii of the substantially-cylindrical shaped cathode.

3. The device of claim 1 , wherein the first section of the substantially-cylindrical shaped cathode extends in a range of around about 30 to 90 degrees.

4. The device of claim 1 , wherein the first section of the cathode adjacent to the anode drift block has the first radius that is substantially constant between the first step and the second step.

5. The device of claim 1 , further comprising a body disposed around the anode for cooling.

6. A crossed-field amplifier comprising:

an input coupler for receiving an RF wave;

an output coupler for transporting an amplified RF wave;

a cathode having a substantially-cylindrical shape;

an anode comprising an anode drift block positioned between the input coupler and the output coupler;

wherein a section of the cathode adjacent to the anode drift block has a substantially planar surface such that electrons are dispersed as they move in a space adjacent to the cathode and the anode drift block, the section of the cathode having the substantially planar surface extending in a range of around 30 to 90 degrees.

7. The device of claim 6 , further comprising a body extending around an outer surface of the anode for cooling the amplifier.

8. The device of claim 6 , wherein the anode drift block extends in a range of around 30-90 degrees.

9. The device of claim 6 , wherein a length of the section of the cathode adjacent to the anode drift block is substantially equal to a length of the anode drift block.

Assignments (18)
SECURITY INTEREST Recorded Aug 26, 2025
From: TRANSDIGM INC.; 17111 WATERVIEW PKWY LLC; 4455 GENESEE PROPERTIES, LLC; 4455 GENESEE STREET, LLC; ACME AEROSPACE, INC.; ADAMS RITE AEROSPACE, INC.; AEROCONTROLEX GROUP, INC.; AEROSONIC LLC; AIRBORNE ACQUISITION, INC.; AIRBORNE GLOBAL, INC.; AIRBORNE HOLDINGS, INC.; AIRBORNE SYSTEMS NA INC.; AIRBORNE SYSTEMS NORTH AMERICA INC.; AIRBORNE SYSTEMS NORTH AMERICA OF CA INC.; AMSAFE GLOBAL HOLDINGS, INC.; AMSAFE, INC.; ANGUS ELECTRONICS CO.; APICAL INDUSTRIES, INC.; ARKWIN INDUSTRIES, INC.; ARMTEC COUNTERMEASURES CO.; ARMTEC COUNTERMEASURES TNO CO.; ARMTEC DEFENSE PRODUCTS CO.; ASHFORD PROPERTIES, LLC; AUXITROL WESTON USA, INC.; AVIATION TECHNOLOGIES, INC.; AVIONIC INSTRUMENTS LLC; AVIONICS SPECIALTIES, INC.; AVTECHTYEE, INC.; BETA TRANSFORMER TECHNOLOGY LLC; BREEZE-EASTERN LLC; BRIDPORT HOLDINGS, INC.; BRIDPORT-AIR CARRIER, INC.; BRUCE AEROSPACE INC.; CALSPAN, LLC; CALSPAN AIR FACILITIES, LLC; CALSPAN AIR SERVICES, LLC; CALSPAN ASE PORTUGAL, INC.; CALSPAN HOLDINGS, LLC; CALSPAN JETS LLC; CALSPAN TECHNOLOGY ACQUISITION LLC; CDA INTERCORP LLC; CEF INDUSTRIES, LLC; CHAMPION AEROSPACE LLC; CHELTON AVIONICS HOLDINGS, INC.; CHELTON AVIONICS, INC.; CHELTON DEFENSE PRODUCTS, INC.; CMC ELECTRONICS AURORA LLC; CPI EDB INTERMEDIATE HOLDINGS, INC.; CPI ELECTON DEVICE BUSINESS, INC.; CTHC LLC; DART AEROSPACE USA, INC.; DART BUYER, INC.; DART HELICOPTER SERVICES, INC.; DART INTERMEDIATE, INC.; DART TOPCO, INC.; DATA DEVICE CORPORATION; DUKES AEROSPACE, INC.; ELECTROMECH TECHNOLOGIES LLC; ESTERLINE EUROPE COMPANY LLC; ESTERLINE INTERNATIONAL COMPANY; ESTERLINE TECHNOLOGIES CORPORATION; ESTERLINE TECHNOLOGIES SGIP LLC; FPT INDUSTRIES LLC; GENESEE HOLDINGS, LLC; GENESEE HOLDINGS II, LLC; GENESSE HOLDINGS III, LLC; HARCOSEMCO LLC; HARTWELL CORPORATION; HELI TECH, INC.; HYTEK FINISHES CO.; ICEMAN HOLDCO, INC.; ILC HOLDINGS, INC.; JANCO CORPORATION; JOHNSON LIVERPOOL LLC; KING NUTRONICS, LLC; KIRKHILL INC.; KORRY ELECTRONICS CO.; LEACH HOLDING CORPORATION; LEACH INTERNATIONAL CORPORATION; LEACH MEXICO HOLDING LLC; LEACH TECHNOLOGY GROUP, INC.; MARATHONNORCO AEROSPACE, INC.; MASON ELECTRIC CO.; MCKECHNIE AEROSPACE DE, INC.; MCKECHNIE AEROSPACE HOLDINGS, INC.; MCKECHNIE AEROSPACE US LLC; MEDTHERM LABS, LLC; MICROWAVE POWER PRODUCTS, INC.; NAT SEATTLE INC.; NMC GROUP, INC.; NORDISK AVIATION PRODUCTS LLC; NORTH HILLS SIGNAL PROCESSING CORP.; NORTH HILLS SIGNAL PROCESSING OVERSEAS LLC; NORWICH AERO PRODUCTS, INC.; OFFSHORE HELICOPTER SUPPORT SERVICES, INC.; PALOMAR PRODUCTS, INC.; PARAVION TECHNOLOGY, INC.; PEXCO AEROSPACE, INC.; PNEUDRAULICS, INC.; POWER DEVICE CORPORATION; RAPTOR LABS HOLDCO, LLC; RAPTOR LABS INTERMEDIATE, LLC; SCHNELLER LLC; SEMCO INSTRUMENTS, INC.; SENSOR CONCEPTS, LLC; SERVOTRONICS, INC.; SHIELD RESTRAINT SYSTEMS, INC.; SIMPLEX MANUFACTURING CO.; SKANDIA, INC.; SKURKA AEROSPACE INC.; SPACE ELECTRONICS LLC; SYMETRICS INDUSTRIES, LLC; TA AEROSPACE CO.; TACTIAR FLUID CONTROLS, INC.; TDG ESL HOLDINGS INC.; TEAC AEROSPACE TECHNOLOGIES, INC.; TELAIR US LLC; TESTVONICS, INC.; TEXAS ROTRONICS, INC.; TRANSICOIL LLC; WHIPPANY ACTUATION SYSTEMS, LLC; YOUNG & FRANKLIN INC.; AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC.; BRIDPORT ERIE AVIATION, INC.; TRANSDIGM GROUP INCORPORATED; TRANSDIGM UK HOLDINGS LIMITED
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 072473/0485 →
SECURITY INTEREST Recorded Sep 20, 2024
From: TRANSDIGM GROUP INCORPORATED; TRANSDIGM INC.; TRANSDIGM UK HOLDINGS LIMITED; 17111 WATERVIEW PKWY LLC; 4455 GENESEE STREET, LLC; 4455 GENESEE PROPERTIES, LLC; 703 CITY CENTER BOULEVARD, LLC; ACME AEROSPACE, INC.; ADAMS RITE AEROSPACE, INC.; AEROCONTROLEX GROUP, INC.; AEROSONIC LLC; AIRBORNE ACQUISITION, INC.; AIRBORNE GLOBAL, INC.; AIRBORNE HOLDINGS, INC.; AIRBORNE SYSTEMS NA INC.; AIRBORNE SYSTEMS NORTH AMERICA INC.; AIRBORNE SYSTEMS NORTH AMERICA OF CA INC.; AIRBORNE SYSTEMS NORTH AMERICA OF NJ INC.; AMSAFE, INC.; AMSAFE GLOBAL HOLDINGS, INC.; ANGUS ELECTRONICS CO.; APICAL INDUSTRIES, INC.; ARKWIN INDUSTRIES, INC.; ARMTEC COUNTERMEASURES CO.; ARMTEC COUNTERMEASURES TNO CO.; ARMTEC DEFENSE PRODUCTS CO.; ASHFORD PROPERTIES, LLC; AUXITROL WESTON USA, INC.; AVIATION TECHNOLOGIES, INC.; AVIONIC INSTRUMENTS LLC; AVIONICS SPECIALTIES, INC.; AVTECHTYEE, INC.; BETA TRANSFORMER TECHNOLOGY LLC; BREEZE-EASTERN LLC; BRIDPORT HOLDINGS, INC.; BRIDPORT-AIR CARRIER, INC; BRIDPORT ERIE AVIATION, INC.; BRUCE AEROSPACE, INC.; CALSPAN AERO SYSTEMS ENGINEERING LLC; CALSPAN AIR FACILITIES, LLC; CALSPAN AIR SERVICES, LLC; CALSPAN ASE PORTUGAL, INC.; CALSPAN HOLDINGS, LLC; CALSPAN, LLC; CALSPAN JETS LLC; CALSPAN SYSTEMS LLC; CALSPAN TECHNOLOGY ACQUISITION LLC; CDA INTERCORP LLC; CEF INDUSTRIES, LLC; CHAMPION AEROSPACE LLC; CHELTON AVIONICS, INC.; CHELTON AVIONICS HOLDINGS, INC.; CHELTON DEFENSE PRODUCTS, INC.; CMC ELECTRONICS AURORA LLC; CPI INTERMEDIATE HOLDINGS, INC.; CPI INTERNATIONAL, INC.; CPI SUBSIDIARY HOLDINGS LLC; CTHC LLC; DART AEROSPACE USA, INC.; DART BUYER, INC.; DART HELICOPTER SERVICES, INC.; DART INTERMEDIATE, INC.; DART TOPCO, INC.; DATA DEVICE CORPORATION; DUKES AEROSPACE, INC.; ELECTROMECH TECHNOLOGIES LLC; ESTERLINE EUROPE COMPANY LLC; ESTERLINE INTERNATIONAL COMPANY; ESTERLINE TECHNOLOGIES CORPORATION; ESTERLINE TECHNOLOGIES SGIP LLC; FPT INDUSTRIES LLC; GENESEE HOLDINGS, LLC; GENESEE HOLDINGS II, LLC; GENESEE HOLDINGS III, LLC; HARCOSEMCO LLC; HARTWELL CORPORATION; HELI TECH, INC.; HYTEK FINISHES CO.; ICEMAN HOLDCO, INC.; ICEMAN INTERMEDIATE MIDCO, LLC; ILC HOLDINGS, INC.; JANCO CORPORATION; JOHNSON LIVERPOOL LLC; KIRKHILL INC.; KING NUTRONICS, LLC; KORRY ELECTRONICS CO.; LEACH HOLDING CORPORATION; LEACH INTERNATIONAL CORPORATION; LEACH MEXICO HOLDING LLC; LEACH TECHNOLOGY GROUP, INC.; MARATHONNORCO AEROSPACE, INC.; MASON ELECTRIC CO.; MCKECHNIE AEROSPACE DE, INC.; MCKECHNIE AEROSPACE HOLDINGS, INC.; MCKECHNIE AEROSPACE US LLC; MEDTHERM LABS, LLC; MICROWAVE POWER PRODUCTS, INC.; NAT SEATTLE INC.; NMC GROUP INC.; NORDISK AVIATION PRODUCTS LLC; NORTH HILLS SIGNAL PROCESSING CORP.; NORTH HILLS SIGNAL PROCESSING OVERSEAS LLC; NORWICH AERO PRODUCTS, INC.; OFFSHORE HELICOPTER SUPPORT SERVICES, INC.; PALOMAR PRODUCTS, INC.; PARAVION TECHNOLOGY, INC.; PEXCO AEROSPACE, INC.; POWER DEVICE CORPORATION; PNEUDRAULICS, INC.; RAPTOR LABS HOLDCO, LLC; RAPTOR LABS INTERMEDIATE, LLC; SCHNELLER LLC; SEMCO INSTRUMENTS, INC.; SENSOR CONCEPTS, LLC; SHIELD RESTRAINT SYSTEMS, INC.; SIMPLEX MANUFACTURING CO.; SKANDIA, INC.; SKURKA AEROSPACE INC.; SPACE ELECTRONICS LLC; SYMETRICS INDUSTRIES, LLC; TA AEROSPACE CO.; TACTAIR FLUID CONTROLS INC.; TDG ESL HOLDINGS INC.; TEAC AEROSPACE TECHNOLOGIES, INC.; TELAIR US LLC; TESTVONICS, INC.; TEXAS ROTRONICS, INC.; TRANSICOIL LLC; WHIPPANY ACTUATION SYSTEMS, LLC; YOUNG & FRANKLIN INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A.
Reel/Frame 068951/0001 →
SECURITY INTEREST Recorded Jul 9, 2024
From: CPI INTERNATIONAL, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 067938/0288 →
SECURITY INTEREST Recorded Jul 9, 2024
From: CPI INTERNATIONAL, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 067938/0298 →
SECURITY INTEREST Recorded Jul 9, 2024
From: CPI INTERNATIONAL, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 067938/0404 →
SECURITY INTEREST Recorded Jul 9, 2024
From: CPI INTERNATIONAL, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 067938/0412 →
SECURITY INTEREST Recorded Jul 9, 2024
From: CPI INTERNATIONAL, INC.
To: THE BANK OF NEW YORK MELLON TRUST COMPANY, N.A., AS TRUSTEE
Reel/Frame 067938/0425 →
SECURITY AGREEMENT Recorded Jul 8, 2024
From: CPI INTERNATIONAL, INC.
To: GOLDMAN SACHS BANK USA, AS AGENT
Reel/Frame 068211/0583 →
RELEASE OF SECURITY INTEREST Recorded Jun 10, 2024
From: ALTER DOMUS (US) LLC
To: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI SATCOM & ANTENNA TECHNOLOGIES INC.; CPI RADANT TECHNOLOGIES DIVISION INC.; CPI ESSCO INC.
Reel/Frame 067678/0059 →
RELEASE OF FIRST LIEN SECURITY INTEREST (REEL 043349 / FRAME 0881) Recorded Oct 10, 2022
From: UBS AG, STAMFORD BRANCH
To: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI RADANT TECHNOLOGIES DIVISION INC.; ASC SIGNAL CORPORATION; CPI MALIBU DIVISION
Reel/Frame 061639/0044 →
RELEASE OF SECOND LIEN SECURITY INTEREST (REEL 043349 / FRAME 0916) Recorded Oct 10, 2022
From: UBS AG, STAMFORD BRANCH
To: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI RADANT TECHNOLOGIES DIVISION INC.; ASC SIGNAL CORPORATION; CPI MALIBU DIVISION
Reel/Frame 061639/0054 →
SECURITY AGREEMENT Recorded Oct 7, 2022
From: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI SATCOM & ANTENNA TECHNOLOGIES, INC.; CPI RADANT TECHNOLOGIES DIVISION INC.; CPI ESSCO INC.
To: ALTER DOMUS (US) LLC, AS COLLATERAL AGENT
Reel/Frame 061623/0543 →
RELEASE OF SECURITY INTEREST Recorded Jul 26, 2017
From: UBS AG, STAMFORD BRANCH
To: COMMUNICATIONS & POWER INDUSTRIES LLC; ASC SIGNAL CORPORATION; CPI MALIBU DIVISION; CPI RADIANT TECHNOLOGIES DIVISION INC.
Reel/Frame 043349/0649 →
FIRST LIEN PATENT SECURITY AGREEMENT Recorded Jul 26, 2017
From: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI RADIANT TECHNOLOGIES DIVISION INC.; ASC SIGNAL CORPORATION; CPI MALIBU DIVISION
To: UBS AG, STAMFORD BRANCH
Reel/Frame 043349/0881 →
SECOND LIEN PATENT SECURITY AGREEMENT Recorded Jul 26, 2017
From: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI RADIANT TECHNOLOGIES DIVISION INC.; ASC SIGNAL CORPORATION; CPI MALIBU DIVISION
To: UBS AG, STAMFORD BRANCH
Reel/Frame 043349/0916 →
RELEASE OF SECURITY INTEREST Recorded Jul 26, 2017
From: UBS AG, STAMFORD BRANCH
To: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI MALIBU DIVISION; CPI LOCUS MICROWAVE, INC.; CPI RADIANT TECHNOLOGIES DIVISION INC.; ASC SIGNAL CORPORATION
Reel/Frame 043358/0573 →
RELEASE OF 2ND LIEN SECURITY INTEREST Recorded Mar 21, 2017
From: CORTLAND CAPITAL MARKET SERVICES LLC
To: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI MALIBU DIVISION; CPI RADANT TECHNOLOGIES DIVISION, INC.
Reel/Frame 042045/0348 →
SECOND LIEN SECURITY AGREEMENT Recorded Mar 21, 2017
From: COMMUNICATIONS & POWER INDUSTRIES LLC; CPI MALIBU DIVISION; CPI LOCUS MICROWAVE, INC.; CPI RADANT TECHNOLOGIES DIVISION, INC.; ASC SIGNAL CORPORATION
To: UBS AG, STAMFORD BRANCH, AS COLLATERAL AGENT
Reel/Frame 042050/0862 →