JPH05315864A - Traveling wave tube amplifier - Google Patents
Traveling wave tube amplifierInfo
- Publication number
- JPH05315864A JPH05315864A JP11561492A JP11561492A JPH05315864A JP H05315864 A JPH05315864 A JP H05315864A JP 11561492 A JP11561492 A JP 11561492A JP 11561492 A JP11561492 A JP 11561492A JP H05315864 A JPH05315864 A JP H05315864A
- Authority
- JP
- Japan
- Prior art keywords
- collector
- power supply
- wave tube
- input level
- traveling wave
- 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
Landscapes
- Microwave Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
Description
【0001】[0001]
【産業上の利用分野】本発明は、進行波管とこれを動作
させる電源とからなる進行波管増幅器に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a traveling wave tube amplifier including a traveling wave tube and a power supply for operating the same.
【0002】[0002]
【従来の技術】進行波管増幅器は、放送用などの中継器
あるいは送信機の最終段増幅器として広く用いられてい
る。進行波管増幅器は出力が10Wから数KW程度のも
のまで種々のものがあるが、中継器あるいは送信機にお
いて他の機器がほとんど固体化されているため、消費電
力の大部分を進行波管増幅器が占めている。このため、
進行波管増幅器の消費電力の低減、つまりは効率の改善
は必要不可欠の条件である。2. Description of the Related Art Traveling wave tube amplifiers are widely used as final stage amplifiers for repeaters or transmitters for broadcasting. There are various types of traveling wave tube amplifiers with an output of about 10 W to several kW, but most of the power consumption is the traveling wave tube amplifier because other devices are almost solidified in the repeater or transmitter. Are occupied. For this reason,
Reducing the power consumption of traveling-wave tube amplifiers, that is, improving efficiency, is an essential condition.
【0003】進行波管増幅器の消費電力低減の方法の一
つとして、遅波回路で高周波との相互作用を終えた電子
ビーム、いわゆるスペントビームを捕捉するコレクタに
おいて熱損失として消費される電力をできるだけ少なく
する方法がある。すなわち、コレクタ電圧をスペントビ
ームの中で最も速度の遅い電子が捉えられる電位まで下
げて動作させる、いわゆるコレクタ電位低下、あるいは
コレクタの電極を複数個に分割してそれぞれに別々の電
圧を印加させてスペントビームの電子をそれぞれの速度
に応じて弁別して捕捉する多段コレクタ電位低下などが
ある。As one of the methods for reducing the power consumption of a traveling wave tube amplifier, the power consumed as a heat loss in a collector that captures an electron beam, which is a so-called spent beam, which has finished interacting with a high frequency in a slow wave circuit, can be minimized. There is a way to reduce it. That is, the collector voltage is lowered to a potential at which the slowest electron in the spent beam is captured to operate, that is, the collector potential is lowered, or the collector electrode is divided into a plurality of electrodes and different voltages are applied to each. There is a multi-stage collector potential reduction that distinguishes and captures the electrons of the spent beam according to each velocity.
【0004】このようにして消費電力の低減を図った進
行波管増幅器として図2に示すようなカソード側を一番
下にして各電源を積み上げた積み上げ方式のものが従来
知られている。この進行波管増幅器は2段のコレクタ1
3を有する進行波管1と、その電源2から構成されてい
る。進行波管1は電子銃3、遅波回路4、コレクタ13
a,13b、およびビーム集束装置6から構成され、電
子銃3にはカソード7、ヒータ8、ウェネルト9、アノ
ード10がある。カソード7から放出された電子ビーム
はビーム集束装置6によって集束されて遅波回路4を通
過し、このとき入力結合部11から入力された高周波と
相互作用して高周波を増幅させる。増幅された高周波は
出力結合部12から外部に取り出され、相互作用の終っ
た電子ビーム、いわゆるスペントビームはコレクタに入
り、速度の遅いものは第1のコレクタ13aに、早いも
のは第2コレクタ13bに入力し捕捉される。電源2は
カソード端子19を基準にして電圧の低いものから順に
第2のコレクタ13b、第1のコレクタ13a、遅波回
路4、アノード10用に各電源15,16,17,18
を積み上げ、端子20,21,22,23をそれぞれ第
2のコレクタ13b、第1のコレクタ13a、遅波回路
4、アノード10用電源端子とし、さらにヒータ用電源
14およびその端子を19,27として構成したもので
ある。なお、遅波回路4が接地電位となっている。ヒー
タ8以外の電源の構成方法には、カソード7側を共通に
して各電源を個別にした個別方式もあるが、小型軽量
化、低消費電力化、低コスト化などの経済性に重点をお
く場合には一般に積み上げ方式が用いられる。As a traveling wave tube amplifier for which the power consumption is reduced in this way, there is conventionally known a stacking type amplifier in which respective power supplies are stacked with the cathode side being the lowest, as shown in FIG. This traveling wave tube amplifier has a two-stage collector 1
It is composed of a traveling wave tube 1 having 3 and a power supply 2 thereof. The traveling wave tube 1 includes an electron gun 3, a slow wave circuit 4, and a collector 13.
The electron gun 3 includes a cathode 7, a heater 8, a Wehnelt 9, and an anode 10. The electron beam emitted from the cathode 7 is focused by the beam focusing device 6 and passes through the slow wave circuit 4. At this time, the electron beam interacts with the high frequency input from the input coupling section 11 to amplify the high frequency. The amplified high frequency is extracted to the outside from the output coupling portion 12, the electron beam after the interaction, so-called spent beam, enters the collector, the slow one to the first collector 13a, and the fast one to the second collector 13b. Enter and be captured. The power supply 2 has power supplies 15, 16, 17, 18 for the second collector 13b, the first collector 13a, the slow wave circuit 4, and the anode 10 in order of increasing voltage with reference to the cathode terminal 19.
The terminals 20, 21, 22, and 23 as the power source terminals for the second collector 13b, the first collector 13a, the slow wave circuit 4, and the anode 10, respectively, and the heater power source 14 and its terminals as 19, 27. It is composed. The slow wave circuit 4 is at ground potential. There is also an individual method of configuring each power source other than the heater 8 with the cathode 7 side being common, but each power source is individually focused, but emphasis is placed on economical efficiency such as reduction in size and weight, low power consumption, and low cost. In some cases, a stacking method is generally used.
【0005】[0005]
【発明が解決しようとする課題】このような従来の進行
波管増幅器では、コレクタ電圧の設定はスペントビーム
の速度分散が最も大きく、遅い電子の割合の大きい飽和
出力時の速度分布に合わせて行なわれる。このため、コ
レクタで発生する熱損失量としては飽和出力時よりも小
信号,無励振時の場合の方が大きくなることがある。こ
れはコレクタの段数が少なく、遅波回路でのビーム変換
効率の高いものほどその影響は顕著である。In such a conventional traveling wave tube amplifier, the collector voltage is set in accordance with the velocity distribution at the saturated output where the velocity dispersion of the spent beam is the largest and the ratio of the slow electrons is large. Be done. Therefore, the amount of heat loss generated in the collector may be larger in the case of a small signal and in the non-excited state than in the saturated output. The effect is more remarkable as the number of collector stages is small and the beam conversion efficiency in the slow wave circuit is high.
【0006】進行波管増幅器としては、飽和出力時から
無励振時までの全ての動作状態が考えられるので、最も
熱損失量が大きい状態を考慮して熱設計を行なう必要が
ある。そのため、進行波管のコレクタは最も熱損失量の
大きい小信号,無励振の場合を考慮するため、小型化で
きない、または使用部材の温度、特に最終段コレクタの
温度が上がりすぎてしまうという欠点があった。Since the traveling-wave tube amplifier can be in all operating states from the saturated output to the non-excited state, it is necessary to design the heat in consideration of the state in which the amount of heat loss is the largest. For this reason, the collector of the traveling wave tube has a drawback that it cannot be miniaturized or the temperature of the member used, especially the temperature of the final stage collector, rises too much, in consideration of the case of small signal with the largest amount of heat loss and no excitation. there were.
【0007】[0007]
【課題を解決するための手段】本発明の進行波管増幅器
は、電源の最終段コレクタ用端子に接続されて最終段コ
レクタ用電源を構成する制御電源と、進行波管の高周波
入力レベルを検出し、この検出信号を前記制御電源の出
力電圧制御部に最終段コレクタ電圧を制御する信号とし
て帰還する検出回路とを有する。A traveling-wave tube amplifier according to the present invention detects a high-frequency input level of a traveling-wave tube and a control power source which is connected to a terminal for a final-stage collector of a power source to form a final-stage collector power source. And a detection circuit for feeding back this detection signal to the output voltage control unit of the control power supply as a signal for controlling the final stage collector voltage.
【0008】[0008]
【実施例】次に本発明について図面を参照して説明す
る。図1は本発明の進行波管増幅器の一実施例を示すブ
ロック図でコレクタが2段の場合のものである。電源2
Aは、図2の従来例の電源2において最終段(この場合
は第2コレクタ)のコレクタ用の端子20に制御電源2
4を接続し、端子25を最終段コレクタ(この場合は第
2コレクタ13b)用電源端子とし、進行波管1の入力
回路28の端子29に接続された入力レベル検出回路3
0を有し、入力レベル検出回路30の検出信号出力端子
を制御電源24の出力電圧制御の入力端子32に接続し
たものである。The present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an embodiment of a traveling wave tube amplifier according to the present invention, in which the collector has two stages. Power supply 2
A is a control power supply 2 connected to a collector terminal 20 of the final stage (second collector in this case) in the power supply 2 of the conventional example of FIG.
4 is connected, the terminal 25 is used as a power supply terminal for the final stage collector (the second collector 13b in this case), and the input level detection circuit 3 connected to the terminal 29 of the input circuit 28 of the traveling wave tube 1 is connected.
0, and the detection signal output terminal of the input level detection circuit 30 is connected to the output voltage control input terminal 32 of the control power supply 24.
【0009】進行波管のスペントビームは飽和出力時の
ときに最も遅い電子が多く、かつ速度分散も大きい。ま
た、無励振の状態では遅い電子は存在せずに速度分散も
ないため、電子ビームは全て最終段のコレクタに入射す
る。従って、小信号,無励振時の場合には、最終段のコ
レクタ電圧を飽和出力時のときよりも下げた場合でも、
コレクタの電子ビームの捕捉性能が失われることはな
い。The spent beam of the traveling wave tube has many slowest electrons at the time of saturated output and has a large velocity dispersion. Further, in the non-excited state, since there are no slow electrons and no velocity dispersion, all electron beams are incident on the final stage collector. Therefore, in the case of small signal and non-excitation, even when the collector voltage of the final stage is lower than that in the case of saturated output,
The electron beam trapping performance of the collector is not lost.
【0010】以上から、図1に示す電源2Aを構成し、
高周波入力レベル検出信号を制御電源24の出力電圧制
御部に帰還することにより、高周波入力レベルに合わせ
て最終段コレクタ電圧を制御することができる。最終段
コレクタに入射する電子ビームのエネルギーは飽和出力
時に最も小さく、高周波入力レベルの低下に合せてその
エネルギーは大きくなるので、高周波入力レベルの低下
に伴ない最終段コレクタ電圧を低下させることで、コレ
クタの電子ビーム捕捉性能を損うことなくコレクタでの
熱負荷を低減できる。From the above, the power supply 2A shown in FIG.
By feeding back the high frequency input level detection signal to the output voltage control unit of the control power supply 24, the final stage collector voltage can be controlled according to the high frequency input level. The energy of the electron beam incident on the final stage collector is the smallest at the saturation output, and the energy increases as the high frequency input level decreases, so by decreasing the final stage collector voltage as the high frequency input level decreases, The heat load on the collector can be reduced without impairing the electron beam trapping performance of the collector.
【0011】[0011]
【発明の効果】以上説明したように本発明は、制御電源
と進行波管の高周波入力レベルの検出回路を設けること
により、高周波入力レベルを進行波管の動作状態を検出
する信号源として使用し、高周波入力レベルの低下に合
せて最終段コレクタ電圧を低下させることで、コレクタ
の電子ビーム捕捉性能を損うことなくコレクタでの熱負
荷を低減することができる。このことは、従来、小信
号,無励振時でのコレクタの温度から設計上の制約を受
けていた進行波管を小型・軽量化することが可能とな
る。As described above, according to the present invention, the high frequency input level is used as a signal source for detecting the operating state of the traveling wave tube by providing the control power source and the high frequency input level detection circuit of the traveling wave tube. By lowering the final stage collector voltage as the high frequency input level decreases, the heat load on the collector can be reduced without impairing the electron beam trapping performance of the collector. This makes it possible to reduce the size and weight of the traveling-wave tube, which has conventionally been limited in design by the collector temperature at the time of small signal and no excitation.
【図1】本発明の進行波管増幅器の一実施例のブロック
図である。FIG. 1 is a block diagram of an embodiment of a traveling wave tube amplifier of the present invention.
【図2】従来の進行波管増幅器のブロック図である。FIG. 2 is a block diagram of a conventional traveling wave tube amplifier.
1 進行波管 2,2A 電源 13a 第1コレクタ 13b 第2コレクタ 14 ヒータ用電源 15 第2コレクタ用電源 16 第1コレクタ用電源 17 遅波回路用電源 18 アノード用電源 24 制御電源 28 入力回路 30 入力レベル検出回路 1 Traveling Wave Tube 2, 2A Power Supply 13a First Collector 13b Second Collector 14 Heater Power Supply 15 Second Collector Power Supply 16 First Collector Power Supply 17 Slow Wave Circuit Power Supply 18 Anode Power Supply 24 Control Power Supply 28 Input Circuit 30 Input Level detection circuit
Claims (1)
圧積み上げ方式の電源とを有する進行波管増幅器におい
て、電源の最終段コレクタ用端子に接続されて最終段コ
レクタ用電源を構成する制御電源と、前記進行波管高周
波入力レベルを検出し、この検出信号を前記制御電源に
最終段コレクタ電圧を制御する信号として帰還する検出
回路とを備えることを特徴とする進行波管増幅器。1. A traveling-wave tube amplifier having a traveling-wave tube and a voltage-stacking type power supply for operating the traveling-wave tube, the control being connected to a terminal of a final-stage collector of the power supply to form a final-stage collector power supply. A traveling-wave tube amplifier, comprising: a power supply; and a detection circuit that detects the high-frequency input level of the traveling-wave tube and feeds this detection signal back to the control power supply as a signal for controlling the final-stage collector voltage.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11561492A JP2842043B2 (en) | 1992-05-08 | 1992-05-08 | Traveling wave tube amplifier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11561492A JP2842043B2 (en) | 1992-05-08 | 1992-05-08 | Traveling wave tube amplifier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH05315864A true JPH05315864A (en) | 1993-11-26 |
JP2842043B2 JP2842043B2 (en) | 1998-12-24 |
Family
ID=14667015
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11561492A Expired - Fee Related JP2842043B2 (en) | 1992-05-08 | 1992-05-08 | Traveling wave tube amplifier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2842043B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006089127A1 (en) * | 2005-02-18 | 2006-08-24 | Communication And Power Industries, Inc. | Dynamic depressed collector (ddc) |
KR100943056B1 (en) * | 2007-08-30 | 2010-02-17 | 엘아이지넥스원 주식회사 | Traveling Wave Tubes Amplifier and Method for controlling voltage of the same |
-
1992
- 1992-05-08 JP JP11561492A patent/JP2842043B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006089127A1 (en) * | 2005-02-18 | 2006-08-24 | Communication And Power Industries, Inc. | Dynamic depressed collector (ddc) |
US7368874B2 (en) | 2005-02-18 | 2008-05-06 | Communications and Power Industries, Inc., Satcom Division | Dynamic depressed collector |
US7888873B2 (en) | 2005-02-18 | 2011-02-15 | Communications And Power Industries, Inc. | Dynamic depressed collector |
KR100943056B1 (en) * | 2007-08-30 | 2010-02-17 | 엘아이지넥스원 주식회사 | Traveling Wave Tubes Amplifier and Method for controlling voltage of the same |
Also Published As
Publication number | Publication date |
---|---|
JP2842043B2 (en) | 1998-12-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19980922 |
|
LAPS | Cancellation because of no payment of annual fees |