EP0156004A1 - Travelling-wave tube and manufacturing method of the same - Google Patents
Travelling-wave tube and manufacturing method of the same Download PDFInfo
- Publication number
- EP0156004A1 EP0156004A1 EP84114709A EP84114709A EP0156004A1 EP 0156004 A1 EP0156004 A1 EP 0156004A1 EP 84114709 A EP84114709 A EP 84114709A EP 84114709 A EP84114709 A EP 84114709A EP 0156004 A1 EP0156004 A1 EP 0156004A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wave tube
- delay line
- traveling wave
- metal layer
- tube according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims 2
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 17
- 239000012212 insulator Substances 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims abstract description 3
- 239000007787 solid Substances 0.000 claims abstract description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 238000010894 electron beam technology Methods 0.000 claims description 4
- 229910052574 oxide ceramic Inorganic materials 0.000 claims description 4
- 239000011224 oxide ceramic Substances 0.000 claims description 4
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 claims description 2
- 238000000227 grinding Methods 0.000 claims 1
- 239000011810 insulating material Substances 0.000 claims 1
- 238000003801 milling Methods 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 2
- 239000003989 dielectric material Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- FRWYFWZENXDZMU-UHFFFAOYSA-N 2-iodoquinoline Chemical compound C1=CC=CC2=NC(I)=CC=C21 FRWYFWZENXDZMU-UHFFFAOYSA-N 0.000 description 1
- LTPBRCUWZOMYOC-UHFFFAOYSA-N beryllium oxide Inorganic materials O=[Be] LTPBRCUWZOMYOC-UHFFFAOYSA-N 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
- H01J23/16—Circuit elements, having distributed capacitance and inductance, structurally associated with the tube and interacting with the discharge
- H01J23/24—Slow-wave structures, e.g. delay systems
- H01J23/26—Helical slow-wave structures; Adjustment therefor
Definitions
- the invention relates to a traveling wave tube according to the preamble of claim 1.
- Traveling wave tubes with a helical delay line accommodated within a metallic vacuum envelope are known for example from DE-PS 19 37 704.
- a number of support rods made of dielectric material are provided which are arranged parallel to one another along surface lines of the line and have good thermal contact with the vacuum envelope.
- the invention has for its object to provide a traveling wave tube of high performance, the delay line is characterized by very good dissipation of the heat loss and wide bandwidth.
- the invention has the essential advantage that, by creating a double-layer (helical) delay line, one achieves that the inner layer of the The delay line is shielded against its outer jacket in such a way that the RF field strength in the interior maintains relatively high values, ie cannot be reduced by the effect of the metallic outer wall.
- a high degree of interaction between the electron beam and the electromagnetic wave is achieved with the best possible radial heat dissipation.
- the technology used is relatively easy and inexpensive to control.
- a delay line 1 is shown, which is arranged within a solid metallic vacuum envelope-4.
- the vacuum envelope 4 is preferably made of copper.
- the delay line 1 has the shape of a spiral.
- the core 2 of the helix consists of insulator material, preferably of aluminum oxide ceramic.
- the core 2 is covered on the outer and inner lateral surfaces with a metal layer 3, which preferably consists of copper.
- the inner metal layer 3 takes over the function as a delay line and the outer metal layer 3 serves as Absdhir - mung against the vacuum envelope 4.
- a HF-field increase inside within the inner metal layer 3 ( Layer helix), ie achieved at the location of the electron beam.
- insulating layers 5 are provided, which preferably consist of aluminum oxide ceramic and ensure radial heat dissipation.
- the RF coupling or decoupling takes place, for example, via a coaxial waveguide 7, the inner conductor 8 of which is attached to the outside of the coil in this exemplary embodiment in such a way that a galvanic connection of the inner metal layer 3 is formed.
- the inner conductor 8 can also be contacted only with the inner metal layer 3.
- the vacuum envelope 4 has a spiral screwing, so that a helical structure 6 is formed, the inner surface of which is connected to the metal layer 3 on the outer surface of the distortion line 1.
- the heat is dissipated via the metal paths of the screw-shaped structure 6 instead of the insulating layers 5 according to FIG.
Landscapes
- Microwave Tubes (AREA)
Abstract
Die Erfindung bezieht sich auf eine Wanderfeldröhre mit einer innerhalb einer massiven metallischen Vakuumhülle (4) angeordneten Verzögerungsleitung (1) in Form einer Wendel-oder einer Ring-Steg-Leitung. Es soll eine Wanderfeldröhre hoher Leistung geschaffen werden, deren Verzögerungsleitung (1) sich durch sehr gute Ableitung der Verlustwärme und große Bandbreite auszeichnet. Die Erfindung sieht hierzu vor, daß die Verzögerungsleitung (1) aus einem-Kern (2) aus lsolatormaterial besteht, der an seiner Innen- und Außenmantelflächen mit einer Metallschicht (3) versehen ist.
The invention relates to a traveling wave tube with a delay line (1) in the form of a helix or a ring-land line arranged inside a solid metallic vacuum envelope (4). A traveling wave tube of high power is to be created, the delay line (1) of which is characterized by very good dissipation of the heat loss and wide bandwidth. To this end, the invention provides that the delay line (1) consists of a core (2) made of insulator material, which is provided with a metal layer (3) on its inner and outer surface.Description
Die Erfindung betrifft eine Wanderfeldröhre nach dem Oberbegriff des Anspruchs 1.The invention relates to a traveling wave tube according to the preamble of
Wanderfeldröhren mit einer innerhalb einer metallischen Vakuumhülle untergebrachten wendelartigen Verzögerungsleitung sind beispielsweise aus der DE-PS 19 37 704 bekannt. Bei diesen Wanderfeldröhren sind eine Anzahl parallel zueinander längs Mantellinien der Leitung angeordnete Halterungsstäbe aus dielektrischem Material vorgesehen, die einen guten thermischen Kontakt zur Vakuumhülle haben.Traveling wave tubes with a helical delay line accommodated within a metallic vacuum envelope are known for example from DE-PS 19 37 704. In these traveling wave tubes, a number of support rods made of dielectric material are provided which are arranged parallel to one another along surface lines of the line and have good thermal contact with the vacuum envelope.
Es ist auch bereits bekannt, die Vakuumhülle und die Verzögerungsleitung aus Kupfer herzustellen und diese Teile mit den Halterungsstäben aus dielektrischem Material, z.B. aus Berylliumoxid, zu verlöten (DE-PS 28 38 515).It is also already known to make the vacuum envelope and the delay line from copper and to connect these parts with the support rods made of dielectric material, e.g. made of beryllium oxide, to be soldered (DE-PS 28 38 515).
Weiterhin ist es bekannt, die zunächst durch Erwärmung aufgeweitete Vakuumhülle auf die Halterungsstäbe aufschrumpfen zu lassen (DE-PS 1937704).Furthermore, it is known to shrink the vacuum envelope, which is initially widened by heating, onto the mounting rods (DE-PS 1937704).
Der Erfindung liegt die Aufgabe zugrunde, eine Wanderfeldröhre hoher Leistung zu schaffen, deren Verzögerungsleitung sich durch sehr gute Ableitung der Verlustwärme und große Bandbreite auszeichnet.The invention has for its object to provide a traveling wave tube of high performance, the delay line is characterized by very good dissipation of the heat loss and wide bandwidth.
Diese Aufgabe wird erfindungsgemäß durch eine Wanderfeldröhre mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved according to the invention by a traveling wave tube with the features of
Weitere vorteilhafte Ausgestaltungen bzw. Weiterbildungen der Erfindung sind Gegenstand zusätzlicher Ansprüche 2b.8.Further advantageous refinements or developments of the invention are the subject of additional claims 2b.8.
Die Erfindung weist den wesentlichen Vorteil auf, daß man durch die Schaffung einer Doppel-Schicht-(wendelartigen)-Verzögerungsleitung erreicht, daß die innere Schicht der Verzögerungsleitung gegen deren Außenmantel derart abgeschirmt ist, daß die HF-Feldstärke im Innenraum relativ hohe Werte beibehält, d.h. durch die Wirkung der metallischen Außenwand nicht reduziert werden kann. Es wird ein hoher Wechselwirkungsgrad zwischen Elektronenstrahl und elektromagnetischer Welle erzielt bei bestmöglicher radialer Wärmeabführung. Die angewandte Technologie ist relativ gut und kostengünstig beherrschbar.The invention has the essential advantage that, by creating a double-layer (helical) delay line, one achieves that the inner layer of the The delay line is shielded against its outer jacket in such a way that the RF field strength in the interior maintains relatively high values, ie cannot be reduced by the effect of the metallic outer wall. A high degree of interaction between the electron beam and the electromagnetic wave is achieved with the best possible radial heat dissipation. The technology used is relatively easy and inexpensive to control.
Es kann auch zweckmäßig sein, ein Mehrschichtsystem vorzusehen, um den Effekt noch zu erhöhen.It can also be expedient to provide a multilayer system in order to further increase the effect.
Die Erfindung wird anhand von Ausführungsbeispielen weiter erläutert. Teile, die nicht unbedingt zum Verständnis der Erfindung beitragen, sind in den Figuren unbezeichnet oder weggelassen.The invention is further explained on the basis of exemplary embodiments. Parts which do not necessarily contribute to an understanding of the invention are not shown in the figures or are omitted.
Es zeigen:
- Fig. 1 die Verzögerungsleitung der erfindungsgemäßen Wanderfeldröhre schematisch teilweise im Schnitt und
- Fig. 2 ein weiteres Ausführungsbeispiel der Verzögerungsleitung der erfindungsgemäßen Wanderfeldröhre schematisch teilweise im Schnitt.
- Fig. 1 shows the delay line of the traveling wave tube according to the invention partially in section and schematically
- Fig. 2 shows another embodiment of the delay line of the traveling wave tube according to the invention partially in section schematically.
In Fig. 1 ist eine Verzögerungsleitung 1 dargestellt, die innerhalb einer massiven metallischen Vakuumhülle-4 angeordnet ist. Die Vakuumhülle 4 besteht vorzugsweise aus Kupfer. Die Verzögerungsleitung 1 weist in diesem Ausführungsbeispiel die Gestalt einer Wendel auf. Der Kern 2 der Wendel besteht aus Isolatormaterial, vorzugsweise aus Aluminiumoxidkeramik. Auf den Außen- und Innenmantelflächen ist der Kern 2 mit einer Metallschicht 3 bedeckt, die vorzugsweise aus Kupfer besteht. Die innere Metallschicht 3 übernimmt dabei die Funktion als Verzögerungsleitung und die äußere Metallschicht 3 dient als Absdhir- mung gegen die Vakuumhülle 4. Damit wird eine HF-Felderhöhung innerhalb der inneren Metallschicht 3 (innere Schichtwendel), d.h. am Ort des Elektronenstrahls erzielt. Zwischen den mit der Metallschicht 3 versehenen Außenmantelflächen der Verzögerungsleitung 1 und der Vakuumhülle 4 sind Isolierschichten 5 vorgesehen, die vorzugsweise aus Aluminiumoxidkeramik bestehen und für eine radiale Wärmeableitung sorgen. Die HF-Ein- bzw. Auskopplung erfolgt z.B. über einen koaxialen Wellenleiter 7, dessen Innenleiter 8 in diesem Ausführungsbeispiel so an die Außenseite der Wendel angebracht ist, daß eine galvanische Verbindung der inneren Metallschicht 3 gebildet ist. Der Innenleiter 8 kann jedoch auch nur mit der inneren Metallschicht 3 kontaktiert sein.In Fig. 1, a
Bei dem in Fig. 2 dargestellten Ausführungsbeispiel weist die Vakuumhülle 4 eine spiralförmige Eindrehung auf, so daß ein schneckenförmiges Gebilde 6 entsteht, dessen Innenmantelflächen mit der Metallschicht 3 auf den Außenmantelflächen der Verzerungsleitung 1 verbunden sind. Die Wärmeabführung erfolgt in diesem Ausführungsbeispiel über die Metallpfade des schneckenförmigen Gebildes 6 anstelle der Isolierschichten 5 nach Fig. 1. Als Verzögerungsleitung 1 dient wiederum eine Wendel, deren vorzugsweise aus Aluminiumoxidkeramik bestehender Kern 2 auf seinen Innen- und Außenmantelflächen mit einer Metallschicht 3 bedeckt ist.In the embodiment shown in Fig. 2, the vacuum envelope 4 has a spiral screwing, so that a
Claims (8)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843407206 DE3407206A1 (en) | 1984-02-28 | 1984-02-28 | WALKING PIPES AND METHOD FOR THE PRODUCTION THEREOF |
DE3407206 | 1984-02-28 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0156004A1 true EP0156004A1 (en) | 1985-10-02 |
EP0156004B1 EP0156004B1 (en) | 1989-03-08 |
Family
ID=6229051
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP84114709A Expired EP0156004B1 (en) | 1984-02-28 | 1984-12-04 | Travelling-wave tube and manufacturing method of the same |
Country Status (3)
Country | Link |
---|---|
US (1) | US4647816A (en) |
EP (1) | EP0156004B1 (en) |
DE (2) | DE3407206A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2597265A1 (en) * | 1986-04-03 | 1987-10-16 | Raytheon Co | HELICOIDAL WAVEGUIDE STRUCTURE FOR PROGRESSIVE WAVE TUBE AND METHOD FOR MANUFACTURING THE SAME |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5173669A (en) * | 1990-09-04 | 1992-12-22 | Hughes Aircraft Company | Slow-wave structure having block supported helix structure |
US5231330A (en) * | 1991-10-25 | 1993-07-27 | Itt Corporation | Digital helix for a traveling-wave tube and process for fabrication |
US6584675B1 (en) * | 2000-06-09 | 2003-07-01 | Sunder S. Rajan | Method for fabricating three dimensional traveling wave tube circuit elements using laser lithography |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519964A (en) * | 1968-07-26 | 1970-07-07 | Microwave Ass | High power slow wave circuit |
US3670196A (en) * | 1971-02-24 | 1972-06-13 | Raytheon Co | Helix delay line for traveling wave devices |
US4115721A (en) * | 1977-01-07 | 1978-09-19 | Louis E. Hay | Traveling wave device with unific composite metal dielectric helix and method for forming |
GB2044989A (en) * | 1979-03-16 | 1980-10-22 | Hughes Aircraft Co | Helical slow-wave structure assemblies and fabrication method |
EP0100996A1 (en) * | 1982-08-06 | 1984-02-22 | Siemens Aktiengesellschaft | Manufacturing method of a helical delay line for travelling-wave tubes |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1937704B2 (en) * | 1969-07-24 | 1972-04-13 | Siemens AG, 1000 Berlin u. 8000 München | WALKING FIELD TUBE WITH A HELICAL DECELERATION LINE |
US3691630A (en) * | 1969-12-10 | 1972-09-19 | James E Burgess | Method for supporting a slow wave circuit via an array of dielectric posts |
US4158791A (en) * | 1977-02-10 | 1979-06-19 | Varian Associates, Inc. | Helix traveling wave tubes with resonant loss |
IT1090547B (en) * | 1977-10-28 | 1985-06-26 | Elettronica Spa | PROGRESSIVE WAVER HELICAL PIPES WITH SELECTIVE AUXILIARY SHIELDING USING CONDUCTIVE ELEMENTS APPLIED ON DIELECTRIC SUPPORTS |
US4185225A (en) * | 1978-03-24 | 1980-01-22 | Northrop Corporation | Traveling wave tube |
FR2420842A1 (en) * | 1978-03-24 | 1979-10-19 | Thomson Csf | DELAY LINE, FOR HYPERFREQUENCY TUBE, COOLED BY FLUID CIRCULATION AND HYPERFREQUENCY TUBE CONTAINING SUCH A LINE |
DE2838515C3 (en) * | 1978-09-04 | 1981-11-12 | Siemens AG, 1000 Berlin und 8000 München | Traveling wave tube |
DE2840782C3 (en) * | 1978-09-19 | 1981-12-10 | Siemens AG, 1000 Berlin und 8000 München | Method of manufacturing a traveling wave tube with a helical delay line |
US4422012A (en) * | 1981-04-03 | 1983-12-20 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Ladder supported ring bar circuit |
-
1984
- 1984-02-28 DE DE19843407206 patent/DE3407206A1/en not_active Withdrawn
- 1984-11-16 US US06/671,936 patent/US4647816A/en not_active Expired - Fee Related
- 1984-12-04 EP EP84114709A patent/EP0156004B1/en not_active Expired
- 1984-12-04 DE DE8484114709T patent/DE3477090D1/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3519964A (en) * | 1968-07-26 | 1970-07-07 | Microwave Ass | High power slow wave circuit |
US3670196A (en) * | 1971-02-24 | 1972-06-13 | Raytheon Co | Helix delay line for traveling wave devices |
US4115721A (en) * | 1977-01-07 | 1978-09-19 | Louis E. Hay | Traveling wave device with unific composite metal dielectric helix and method for forming |
GB2044989A (en) * | 1979-03-16 | 1980-10-22 | Hughes Aircraft Co | Helical slow-wave structure assemblies and fabrication method |
EP0100996A1 (en) * | 1982-08-06 | 1984-02-22 | Siemens Aktiengesellschaft | Manufacturing method of a helical delay line for travelling-wave tubes |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2597265A1 (en) * | 1986-04-03 | 1987-10-16 | Raytheon Co | HELICOIDAL WAVEGUIDE STRUCTURE FOR PROGRESSIVE WAVE TUBE AND METHOD FOR MANUFACTURING THE SAME |
Also Published As
Publication number | Publication date |
---|---|
EP0156004B1 (en) | 1989-03-08 |
DE3407206A1 (en) | 1985-08-29 |
DE3477090D1 (en) | 1989-04-13 |
US4647816A (en) | 1987-03-03 |
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