DATA SHEET

Document No. ET0214EJ2V1DS00 (2nd edition)

Date Published August 1998 M

Printed in Japan

6 GHz, 3 kW CW, PPM FOCUSING, HIGH POWER GAIN

The information in this document is subject to change without notice.

©

1996

HIGH POWER TRAVELING WAVE TUBE

FOR GROUND TERMINALS

LD7215W

For safe use of microwave tubes, refer to NEC document “Safety instructions to all personnel

handling electron tubes” (ET0048EJ

∗V∗UM00)

GENERAL DESCRIPTION

NEC LD7215W is a PPM-focused traveling wave tube designed for use as final amplifier in the earth-to-satellite

communications transmitter.

This is capable of delivering an output power of 3 kW over the range of 5.85 to 6.65 GHz.

It provides a high power gain of 42 dB at a rated output power.

Furthermore, this is of rugged and reliable design offering long-life service.

FEATURES

™ High Power Gain

The power gain is typically 42 dB minimum at 3 kW level.

™ Simple Cooling System

The tube is forced-air-cooled, so that the cooling systems are simplified.

™ PPM Focusing

The tube is PPM (Periodic Permanent Magnet) -focused, eliminating entirely the focusing power supplies and

interlock circuits.

™ Rugged Construction

The tube 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.

™ Microdischarge 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.