High power band pass RF filter having a gas tube for surge suppression

摘要

A high power band pass RF filtering device having a housing for containing a printed circuit board with filtering components for achieving strong attenuation of out-of-band signals. An input port and an output port on the housing electrically connect to a respective input node and output node on the printed circuit board. Surge protection elements are connected at the input port and at the output port for dissipating surge conditions present at the input port or the output port to the housing before the surge travels through the printed circuit board. A non-surge signal present on the input port can travel through the filtering components on the printed circuit board towards the output port. An oil or other fluid is disposed and completely contained within the housing and contacts the printed circuit board for cooling the printed circuit board or the filtering components.