GENERAL DESCRIPTION
MPM stands for Microwave Power Module and is the solution introduced by NEC for a microwave power source with high efficiency and the most compact size.
The MPM consists of a miniaturized traveling wave tube (TWT) and an electronic power conditioner (EPC). All the potential interface problems are taken care of by NEC and the user simply connects the MPM to his RF output and plugs in the DC supply.

FEATURES
○ Light weight, Compact, and Efficient
    The TWT built in the MPM 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 multi-carrier transmission systems.
○ Long Life
    The TWT is designed to have a lifetime of 80,000 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.