In order to suppress the inductive coupling of the voltage signal during transmission inside the transmitter, a voltage and frequency conversion method may be used to convert the voltage signal into a frequency signal linearly proportional to the voltage. Since inductive coupling generally only affects the amplitude of the signal, voltage and frequency conversion can be used to include voltage information in the frequency of the signal, effectively suppressing the influence of inductive coupling on the amplitude of the voltage signal. The voltage signal is replaced by a frequency signal linearly proportional to the voltage, which can effectively suppress the inductive coupling during signal transmission.

In high-power electric vacuum transmitters, sometimes the hardware suppression measures can not completely eliminate the interference, and can only be weakened. In this case, the interference can be suppressed by means of software to enable the transmitter to work stably.

The space of the high-voltage insulated box is limited, so the high-voltage part-modulator unit in the box adopts a solid potting design. The wires connecting the high-voltage modules are selected from high-voltage wires formed by silicone rubber molds. Under low air pressure, it can withstand a high voltage line with a voltage of 35kV (the voltage supplied to the traveling wave tube in the transmitter is 30kV). All the high voltage connection parts are high voltage connectors with a withstand voltage of 40kV or higher. The operation panel of the cabinet is marked on the panel. High pressure end. The cabinet is provided with small gaps and small holes (non-hermetic design) to prevent insulation and safety from accumulating inside the tank during the hot and humid temperature cycle.