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LD7267 Datasheet(Fiches technique) 1 Page - NEC

Numéro de pièce LD7267
Description  30 GHz, 100 W CW, CONDUCTION COOLING, HIGH POWER GAIN
Télécharger  6 Pages
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Fabricant  NEC [NEC]
Site Internet  http://www.nec.com/
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DATA SHEET
Document No. ET0398EJ1V0DS00
Date Published August 1998 M
Printed in Japan
30 GHz, 100 W CW, CONDUCTION COOLING, HIGH POWER GAIN
HIGH POWER TRAVELING WAVE TUBE
FOR COMMUNICATIONS
LD7267 SERIES
The information in this document is subject to change without notice.
©
1998
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 LD7267 series of PPM-focused traveling wave tubes are designed for use as final amplifiers in the
earth-to-satellite communications transmitter, LMDS (Local Multipoint Distribution Service) and other advanced
communication systems.
Three models of the LD7267 series are capable of delivering an output power of 100 W over the range of 26.5
GHz to 31.1 GHz and provide a high power gain of 50 dB at 100 W output power. These are equipped with dual-
stage depressed collector for enhancing overall efficiency and a single collector.
Furthermore, they are of rugged and reliable design offering long-life service.
FEATURES
™ High Power Gain
The power gain is typically 50 dB at 100 W level.
™ Simple Cooling System
The tubes are conduction-cooled, so that the cooling systems are greatly simplified.
™ PPM Focusing
The tubes are PPM (Periodic Permanent Magnet) -focused, eliminating entirely the focusing power supplies
and interlock circuits.
™ Rugged Construction
The tubes are designed to be rugged, therefore they are suitable for transportable systems.
™ Long Life and High Stability
The tubes employ an advanced impregnated cathode with a low operating temperature for long life.
™ Microdischarge Free
The tubes are carefully designed to be free from microdischarge in the electron gun for long term operation,
therefore they are suitable for digital communication service.




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