GENERAL DESCRIPTION
NEC Microwave Power Module (MPM) LD79U04K is a microwave power device in which a traveling wave tube (TWT) and an electric power conditioner (EPC) are combined, so that both components can accomplish each full performance.

FEATURES
○ Light weight, Compact, and Efficient
    The TWT has a dual-depressed collector and is designed to operate at high efficiency across the power output range. The EPC features state-of-the-art techniques to optimize size and efficiency and the combination results in a unit significantly smaller and with less power consumption than a comparable solid state amplifier.
○ Low Distortion
    NEC has developed techniques for the correction of non-linear distortion of gain and phase generated in a TWT. As a result, the MPM has optimum performance across a broad power range and is ideally suited for multicarrier transmission systems.
○ Long Life
    The TWT in NECs MPM is designed to have a lifetime of 100,000 hours or more, which is comparable to that of a solid state amplifier in actual usage.
○ Ideal for Digital Systems
    A mini-arcing in the electron gun have been eliminated in the TWT used in the MPM.