LD7710

DATA S HE E T MEDIUM POWER TRAVELING WAVE TUBE FOR GROUND TERMINALS LD7710 14GHz, 40 W CW PPM FOCUSING, MINIMUM SIZE GENERAL DESCRIPTION The NEC LD7710 is a PPM focused traveling wave tube designed for final amplifier tube in the earth-to-satellite communication's transmitter. This is capable of delivering an output power of 40 W over the range of 13.75 to 14.5 GHz. It provides a mid power gain of 26 dB at 40 W level. Furthermore, this is of rugged and reliable design offering long life services. FEATURES ™ Lightweight, Compact and Efficient The tube has a dual-depressed collectors and is 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 of gain 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. ™ Right Power Gain for Minimum Size The power gain is designed into 26 dB at 40 W level in order to keep the tube length minimum. ™ Simple Cooling System The tube is conduction cooled, so that the cooling system is 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 ...