Power Management System for Dual Travelling Wave Tube Amplifier

2- A power management system according to claim 1, further comprising a cathode current control loop driven by a cathode current setting means and a cathode current sensing means, the cathode current control loop driving an Anode Zero driving module setting the Anode Zero voltage.

3- A power management system according to claim 1, wherein the dual travelling wave tube amplifier is a dual travelling wave tube amplifier comprising linear preamplifiers able to implement an RF-mute mode, simultaneously with the activation of said sleep mode.

4- A power management system according to claim 2, wherein said Anode Zero driving module further comprises a regulator whose output is connected to the base of a transistor through a base resistor in a common emitter configuration, and whose emitter is connected to the collector through a first Zener diode setting a minimum cathode current value when said sleep mode is activated, the transistor being then saturated in an Off mode.

5- A power management system according to claim 2, wherein said sleep mode is activated through closing a sleep mode command switch associated with said cathode current setting means, the cathode current setting means being formed by an adjustable voltage Vref.

6- A power management system according to claim 5, further comprising filtering means allowing slow setting of the voltage reference Vref, with a time constant longer than the reaction time of the regulator.

7- A power management system according to claim 6, wherein said filtering means is formed by a first order filter.

8- A power management system according to claim 4, wherein a second Zener diode in series between the transistor collector and a polarization resistor of the Anode Zero sets a maximum current value.