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參數(shù)資料
| 型號： | LD7714 |
| 廠商： | NEC Corp. |
| 英文描述： | 30 GHz, 40 W CW, Conduction Cooling, Mimimum Size |
| 中文描述： | 30千兆赫，40 W連續(xù)，傳導(dǎo)冷卻，Mimimum大小 |
| 文件頁數(shù)： | 1/6頁 |
| 文件大?。?/td> | 53K |
| 代理商： | LD7714 |
Document No. ET0454EJ 1V0DS00
Date Published August 1999 M
Printed in J apan
30 GHz, 40 W CW, Conduction Cooling, Mimimum Size
MIDIUM POWER TRAVELING WAVE TUBE
FOR COMMUNICATIONS
LD7714
The information in this document is subject to change without notice.
1999
For safe use of microwave tubes, refer to NEC document “Safety instructions to all personnel
handling electron tubes” (ET0048EJ
V
UM00)
GENERAL DESCRIPTION
The NEC LD7714 is a PPM-focused traveling wave tube designed for use as final amplifier in the earth-to-
satellite communications transmitter, LMDS (Local Multipoint distribution service) and other advanced
communication systems.
This is capable of delivering an output power of 40 W over the range of 27.5 to 30.0 GHz and provides a power
gain of more than 40 dB at 40 W level.
Furthermore, it is of rugged and reliable design offering long-life service.
FEATURES
Lightweight, Compact and Efficient
The tube has a dual-depressed collectors and designed to operate at high efficiency across the power output
range. It features state-of-the-art techniques to optimize size and efficiency.
Low Distortion
Distortion is a very important factor in multiplex digital signals transmission. NEC has developed techniques
for the correction of non-linear distortion and phase generated in a TWT. As a result, the TWT has an optimum
performance across a broad power range and is ideally suited for multi-carrier trancmission systems.
Simple Cooling System
The tube is conduction cooled, so that the cooling system is simplified.
Rugged Construction
The power gain is designed to be rugged, therefore it is suitable for transportable systems.
Long Life and High Stability
The tube employs an advanced impregnated cathode with a low operating temperature for long life.
Micro-discharge Free
The tube is carefully designed to be free from microdischarge in the electron gun for long term operation,
therefore it is suitable for digital communication service.
DATA S HEET
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