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Modulated electron beam-driven generator (MBG) relates to klystron-like devices by employing mildly relativistic e-beams of microsecond duration.

A modified split-cavity oscillator is used as e-beam modulator. To ensure the efficient microwave radiation energy extraction across a broad frequency range, this option of the generator employs a custom-made de-modulator which is compatible with mode converter and antenna.

MBG employs a coaxial-sector antenna of a proprietary configuration that provides for such angle between the generator axis and that of maximum emission that varies between 0 and 25⁰.

As its power source, MBG can use either magnetocumulative generator (MCG) or storage capacitance.

The general view of a MBG, as powered by storage capacitance, with the radiating antenna is given in Fig. 1.

	Fig. 1. General view of modulated electron beam-driven generator: а) – Side view; b) – View from antenna port side.

	Fig. 2. General view of modulated beam-driven generator at lab stand.

Main parameters of this generator are given in Table 1

Table 1. Main parameters of modulated relativistic electron beam-driven generator