DATA SHEET

Document No. ET0475EJ1V0DS00 (1st edition)

Date Published September 1999 M

Printed in Japan

6 GHz, 750 W CW, CONDUCTION COOLING, HIGH POWER GAIN

HIGH POWER TRAVELING WAVE TUBE

FOR COMMUNICATIONS

LD7262 SERIES

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 LD7262 series of PPM focused traveling wave tubes are designed for final amplifier in the earth-to-

satellite communication's transmitter.

These are capable of delivering an output power of 750 W over the range of 5.85 to 6.45 GHZ and an output

power of 700 W over the range of 5.85 to 7.1 GHZ With a power gain of more than 45 dB at any power level.

Furthermore, these are rugged and reliable design offering long life services.

FEATURES

™ Lightweight, Compact and Efficient

The tube has 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 opti-

mum pertormance across a broad power range and is ideally suited for multi-carrier transmission 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.