LD7263 Datasheet | NEC

DATA S H E E T HIGH POWER TRAVELING WAVE TUBE FOR MUNICATIONS 14 GHz, 750 W CW, CONDUCTION COOLING, HIGH POWER GAIN GENERAL DESCRIPTION The NEC LD7263 is a PPM-focused traveling wave tube designed for use as final amplifiers in the earth-tosatellite munications transmitter. This is capable of delivering an output power of 750 W over the range of 1 3.75 to 14.5 GHZ and provides a power gain of more than 47 d B at 750 W Ievel. Furthermore, this is of rugged and reliable design offering long-Iife service. Features ™ Lightweight, pact 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 optimum performance 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 munication service. For safe use of microwave tubes, refer to NEC document “Safety instructions to all personnel handling electron tubes” (ET0048EJ∗V∗UM00) The information in this document is subject to change without notice. Document No. ET0479EJ1V0DS00 Date Published September 1999 M Printed in Japan © GENERAL CHARACTERISTICS ELECTRICAL Frequency ……………………………………………… 13.75 to...