JPH0471143A - Traveling wave tube - Google Patents
Traveling wave tubeInfo
- Publication number
- JPH0471143A JPH0471143A JP18205490A JP18205490A JPH0471143A JP H0471143 A JPH0471143 A JP H0471143A JP 18205490 A JP18205490 A JP 18205490A JP 18205490 A JP18205490 A JP 18205490A JP H0471143 A JPH0471143 A JP H0471143A
- Authority
- JP
- Japan
- Prior art keywords
- heat
- magnetic field
- annular magnets
- pole pieces
- supporter
- 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
- 230000000737 periodic effect Effects 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000017525 heat dissipation Effects 0.000 abstract description 20
- 238000010894 electron beam technology Methods 0.000 abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052802 copper Inorganic materials 0.000 abstract description 3
- 239000010949 copper Substances 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Landscapes
- Microwave Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、進行波管に関し、特にその高周波回路部の放
熱構造に間する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a traveling wave tube, and particularly to a heat dissipation structure of a high frequency circuit portion thereof.
進行波管は、電子ビームを射出する電子銃、電子ビーム
と高周波との相互作用により高周波の増幅が行なわれる
高周波回路、相互作用の終った電子ビームを捕捉するコ
レクタ、及び電子ビームを集束させるための周期磁界集
束装置から構成される。A traveling wave tube consists of an electron gun that emits an electron beam, a high-frequency circuit that amplifies high-frequency waves through interaction between the electron beam and high-frequency waves, a collector that captures the electron beam after the interaction, and a collector that focuses the electron beam. It consists of a periodic magnetic field focusing device.
高周波回路は、通常の軌道をはずれた電子ビームの衝突
による熱、および高周波の伝搬に伴なう高周波損失によ
る熱によって加熱される。High-frequency circuits are heated by heat caused by collisions of electron beams that have deviated from their normal orbits and by heat caused by high-frequency losses accompanying the propagation of high-frequency waves.
第３図の従来構造の高周波回路の横断面図を用いて説明
する。図はへリックス形進行波管の高周波回路の横断面
図である。この場合の放熱経路としては、ヘリックス１
から複数本の誘電体支持２、ヘリックスシェル（図はポ
ールピースとスペーサーを交互にろう付したインテグラ
ルポールピース構造であるためポールピース部でシェル
を兼ねており、図面上は無い）、ポールピース３、円環
状磁石４、周期磁界集束装置の下部半外周に密接する支
持体５、ケース基板６へと放熱される。This will be explained using a cross-sectional view of a high frequency circuit having a conventional structure shown in FIG. The figure is a cross-sectional view of a high-frequency circuit of a helical traveling wave tube. In this case, the heat radiation path is Helix 1.
, multiple dielectric supports 2, helix shell (the figure shows an integral pole piece structure in which pole pieces and spacers are alternately brazed, so the pole piece also serves as a shell, and is not shown in the figure), pole piece 3 , the annular magnet 4, the support body 5 that is in close contact with the lower half outer circumference of the periodic magnetic field focusing device, and the case substrate 6.
支持体５の形状は、第３図（ｂ）のようにブロック状の
もの、あるいは第３図（ｃ）のように板状のものを複数
枚並べたものがある。The shape of the support 5 may be a block-like one as shown in FIG. 3(b), or a plurality of plate-like supports arranged side by side as shown in FIG. 3(c).
また、高周波回路での発生熱量が大きいものは第４図の
ように、放熱カバー１１を支持体５にネジ１２等で固定
することで放熱効率の向上を計っていた。Furthermore, for high-frequency circuits that generate a large amount of heat, as shown in FIG. 4, the heat dissipation efficiency is improved by fixing the heat dissipation cover 11 to the support body 5 with screws 12 or the like.
しかしながら、従来の構造では高周波回路で発生した熱
はポールピース、円環状磁石が支持体に密接している下
部に流れ、熱流束が大きくなり、放熱効率が良くないと
いう欠点があった。However, in the conventional structure, the heat generated in the high-frequency circuit flows to the lower part where the pole piece and the annular magnet are in close contact with the support, resulting in a large heat flux and poor heat dissipation efficiency.
また、磁石は約−０，０４％／℃程度の温度係数を持つ
ため、熱が片側にしか逃げない場合には偏磁界を生じ進
行波管の温度特性を悪化させることになる。この偏磁に
より高周波回路の中を通過する電子ビームの軌道が乱さ
れ、高周波回路部に衝突する電子の量が増え、高周波回
路で発生する熱量を増やすといっな欠点があった。また
、高周波の伝搬に伴う高周波損失は出力電力の約２割に
相当し出力電力に比例するので、進行波管の大電力化に
伴い、放熱カバーを取り付けるなどの改善案が実施され
ている。しかし、その効果は微少であり、別の問題とし
て周期磁界集束装置の磁界微調整は通常、鉄小片をポー
ルピース、円環状磁石の上にはり付けることで行うが、
放熱カバーの上からでははり付かない、効果が少ないと
いう欠点を生じていた。Furthermore, since the magnet has a temperature coefficient of approximately -0.04%/°C, if heat escapes only to one side, a polarized magnetic field will be generated and the temperature characteristics of the traveling wave tube will be deteriorated. This biased magnetization disturbs the trajectory of the electron beam passing through the high-frequency circuit, increasing the amount of electrons that collide with the high-frequency circuit and increasing the amount of heat generated in the high-frequency circuit. Furthermore, the high-frequency loss associated with the propagation of high-frequency waves is equivalent to about 20% of the output power and is proportional to the output power, so as the power of traveling wave tubes increases, improvements such as installing heat dissipation covers are being implemented. However, the effect is small, and another problem is that fine adjustment of the magnetic field of a periodic magnetic field focusing device is usually done by gluing a small piece of iron onto the pole piece or annular magnet.
The problem was that it did not stick on top of the heat dissipation cover and was not very effective.
本発明の進行波管は、ポールピースおよび円環状磁石か
らなる周期磁界集束装置の支持体と密接しない外周囲に
銅、アルミなどの熱伝導率の高い金属製の放熱部品を複
数個取り付け、ケース基板の支持体が固定されていない
比較的温度の低い部分、更にはケースカバーに放熱する
ようにしたことを特徴とする。これにより熱放散効率が
向上し、円環状磁石に生じる偏磁界を防止することがで
きる。In the traveling wave tube of the present invention, a plurality of heat dissipating parts made of metals with high thermal conductivity such as copper or aluminum are attached to the outer periphery of the periodic magnetic field focusing device, which is composed of a pole piece and an annular magnet, and which are not in close contact with each other. It is characterized in that heat is radiated to a relatively low-temperature area where the substrate support is not fixed, and further to the case cover. This improves heat dissipation efficiency and prevents a biased magnetic field from occurring in the annular magnet.
以下、図を用いて本発明について説明する。第１図（ａ
）は本発明の第１の実施例を示すヘリックス形進行波管
の高周波回路部の横断面図、第１図（ｂ）は放熱部品を
示す斜視図、第１図（ｃ）は第１図（ａ）のＡ−Ａ’矢
視図を示している。The present invention will be explained below with reference to the drawings. Figure 1 (a
) is a cross-sectional view of the high-frequency circuit section of a helical traveling wave tube showing the first embodiment of the present invention, FIG. 1(b) is a perspective view showing a heat dissipation component, and FIG. 1(c) is a The AA' arrow view of (a) is shown.
電子ビームの衝突、高周波の伝搬に伴う高周波損失によ
り、ヘリックス１で発生した熱は複数本の誘電体支柱を
通して、ポールピース３及び軸方向交互に配置された円
環状磁石４に放熱される。ポールピース３および円環状
磁石４からは下部に密接する支持体５を通してケース基
板６へ、側面および上部に密接する放熱部品１０を通し
てケース基板６への放熱される。The heat generated in the helix 1 due to the collision of the electron beam and the high frequency loss accompanying the propagation of the high frequency wave is radiated through the plurality of dielectric pillars to the pole pieces 3 and the annular magnets 4 arranged alternately in the axial direction. Heat is radiated from the pole piece 3 and the annular magnet 4 to the case substrate 6 through the support member 5 that is in close contact with the lower portion, and to the case substrate 6 through the heat dissipation components 10 that are in close contact with the side and upper portions.
第２図（ａ）は本発明の第２の実施例の横断面図、第２
図（ｂ）は放熱部品の斜視図である。この実施例は放熱
部品１０をケースカバー７に接続することにより、熱放
散効率を更に向上させたものである。FIG. 2(a) is a cross-sectional view of a second embodiment of the present invention;
Figure (b) is a perspective view of the heat dissipation component. In this embodiment, the heat dissipation efficiency is further improved by connecting the heat dissipation component 10 to the case cover 7.
以上説明したように本発明は、ポールピース。 As explained above, the present invention relates to a pole piece.
円環状磁石の支持体の密接されていない部分に銅、アル
ミ等の熱伝導率の高い金属製の放熱部品を取り付け、ケ
ース基板の支持体が接続されていない部分に広範囲に放
熱することが可能であるため、高周波回路の放熱効率を
向上させることができる。Heat dissipation parts made of metal with high thermal conductivity, such as copper or aluminum, are attached to the parts of the annular magnet support that are not in close contact, allowing heat to be dissipated over a wide area to the parts of the case board that are not connected to the support. Therefore, the heat dissipation efficiency of the high frequency circuit can be improved.
また、円環状磁石単体を見ても、外周全体から、放熱さ
れるため、温度差がつきにくい。つまりは偏磁界を生じ
にくいという効果がある。Furthermore, even when looking at a single annular magnet, heat is radiated from the entire outer periphery, making it difficult for temperature differences to occur. In other words, it has the effect of making it difficult to generate a biased magnetic field.
更に、放熱部品はケース基板に支持体、高周波回路を固
定した後で取り付けることが可能であり、管球毎の発熱
量２発熱分布に合わせて取り付ける数量、取り付ける場
所を調整することができるので放熱部品の取り付けによ
る重量の増加を必要、最小限におさえることができる。Furthermore, heat dissipation components can be attached after fixing the support and high-frequency circuit to the case board, and the number and location to be attached can be adjusted according to the heat generation distribution of each bulb. Increase in weight due to attachment of parts can be minimized.
また、鉄小片をはり付けて行う、磁界微調整においても
充分表面が露出しているため、容易に調整が可能である
。Further, since the surface is sufficiently exposed, fine adjustment of the magnetic field can be easily performed by gluing small iron pieces.
第１図（ａ）は本発明の第１の実施例の横断面図、第１
図（ｂ）は放熱部品の斜視図、第１図（ｃ）は第１図（
ａ）のＡ−Ａ’矢視図、第２図（ａ）は本発明の第２の
実施例の横断面図、第２図（ｂ）は放熱部品の斜視図、
第３図（ａ）は従来の高周波回路の横断面図、第３図（
ｂ）（Ｃ）は支持体の例を示す斜視図、第４図は従来の
高周波回路の他の例の横断面図である。
１・・・ヘリックス、２・・・誘電体支柱、３・・・ポ
ールピース、４・・・円環状磁石、５・・・支持体、６
・・・ケース基板、７・・・ケースカバー １０・・・
放熱部品、１１・・・放熱カバー １２・・・ネジ、１
３・・・鉄車片。FIG. 1(a) is a cross-sectional view of the first embodiment of the present invention.
Figure (b) is a perspective view of the heat dissipation component, and Figure 1 (c) is Figure 1 (
Fig. 2(a) is a cross-sectional view of the second embodiment of the present invention, Fig. 2(b) is a perspective view of the heat dissipation component,
Figure 3(a) is a cross-sectional view of a conventional high-frequency circuit;
b) (C) is a perspective view showing an example of a support body, and FIG. 4 is a cross-sectional view of another example of a conventional high frequency circuit. DESCRIPTION OF SYMBOLS 1... Helix, 2... Dielectric pillar, 3... Pole piece, 4... Annular magnet, 5... Support body, 6
...Case board, 7...Case cover 10...
Heat dissipation parts, 11... Heat dissipation cover 12... Screws, 1
3... Iron car piece.
Claims (1)
ルピースを交互に同軸的に配置してなる周期磁界集束装
置と、この周期磁界集束装置の下部半外周囲に密接し支
持固定する支持体と、この支持体が固定されるケース基
板とを有する進行波管において、前記周期磁界集束装置
の前期支持体が接しない外周に密接し、前記ケース基板
に接合される複数個の放熱部品を有することを特徴とす
る進行波管。A periodic magnetic field focusing device comprising a plurality of annular permanent magnets and pole pieces arranged coaxially and alternately around the outer periphery of a high frequency circuit, and a support that closely supports and fixes the lower half of the periodic magnetic field focusing device. , a traveling wave tube having a case substrate to which the support is fixed, including a plurality of heat dissipating parts closely attached to the outer periphery of the periodic magnetic field focusing device that is not in contact with the first support and bonded to the case substrate; A traveling wave tube featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2182054A JP3036006B2 (en) | 1990-07-10 | 1990-07-10 | Traveling wave tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2182054A JP3036006B2 (en) | 1990-07-10 | 1990-07-10 | Traveling wave tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0471143A true JPH0471143A (en) | 1992-03-05 |
| JP3036006B2 JP3036006B2 (en) | 2000-04-24 |
Family
ID=16111537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2182054A Expired - Lifetime JP3036006B2 (en) | 1990-07-10 | 1990-07-10 | Traveling wave tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3036006B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332948A (en) * | 1992-05-13 | 1994-07-26 | Litton Systems, Inc. | X-z geometry periodic permanent magnet focusing system |
-
1990
- 1990-07-10 JP JP2182054A patent/JP3036006B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5332948A (en) * | 1992-05-13 | 1994-07-26 | Litton Systems, Inc. | X-z geometry periodic permanent magnet focusing system |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3036006B2 (en) | 2000-04-24 |
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