LD7713

DATA S H E E T MIDIUM POWER TRAVELING WAVE TUBE FOR COMMUNICATIONS LD7713 30 GHz, 20 W CW, Conduction Cooling, Mimimum Size GENERAL DESCRIPTION The NEC LD7713 is a PPM-focused traveling wave tube designed for use as final amplifier in the earth-tosatellite communications transmitter, LMDS (Local Multipoint distribution service) and other advanced communication systems. This is capable of delivering an output power of 20 W over the range of 27.5 to 30.0 GHz and provides a power gain of more than 40 dB at 20 W level. Furthermore, it is of rugged and reliable design offering long-life service. FEATURES ™ Lightweight, Compact and Efficient The tube has a 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 trancmission 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 fo...