DATA SHEET

Document No. ET0141EJ2V1DS00 (2nd edition)

Date Published August 1998 M

Printed in Japan

14 GHz, 600 W CW, PPM FOCUSING, HIGH POWER GAIN

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

©

1989(1995)

HIGH POWER TRAVELING WAVE TUBE

FOR GROUND TERMINALS

LD7202 SERIES

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

handling electron tubes” (ET0048EJ

∗V∗UM00)

GENERAL DESCRIPTION

NEC LD7202 series of PPM-focused traveling wave tubes are designed for use as final amplifiers tube in the

earth-to-satellite communications transmitter.

These are capable of delivering an output power of 600W over the range of 12.75 to 14.5 GHz and provide a high

power gain of 52 dB at 600 W output power.

Furthermore, they are of rugged and reliable design offering long-life service.

The LD7202 is fully compatible with TH3591B.

FEATURES

™ High Power Gain

The power gain is typically 52 dB at 600 W level.

™ Simple Cooling System

The tubes are forced-air-cooled, so that the cooling systems are greatly simplified.

™ PPM Focusing

All 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 use in digital communication service.