Lightning protection structure adapted for antenna end of filter

A lightning protection structure, adapted for an antenna end of a filter, comprising:

• a cavity filter;
• an antenna jointing interface being located outside the cavity filter;
• a main jointing rod being located in the cavity filter, the main jointing rod passing through a wall surface of the cavity filter, and the main jointing rod being coupled to the antenna jointing interface;
• a printed circuit board;
• a notch filter;
• the printed circuit board and the notch filter being both located in the cavity filter, and being positioned at opposite sides of the main jointing rod, respectively;
• and
• an induction coil being arranged in the notch filter, the induction coil comprising a spiral body portion, a first end portion and a second end portion, the first end portion and the second end portion extending from the spiral body portion in opposite directions, the first end portion of the induction coil extending through a top cover of the notch filter, the first end portion of the induction coil being coupled to the printed circuit board, the second end portion of the induction coil being coupled to a bottom wall of the notch filter, and the notch filter being disposed opposite to the top cover.

A lightning protection structure, adapted for an antenna end of a filter, comprising:

• a cavity filter;
• an antenna jointing interface being located outside the cavity filter;
• a main jointing rod being located in the cavity filter, the main jointing rod passing through a wall surface of the cavity filter and the main jointing rod being coupled to the antenna jointing interface;
• a printed circuit board being located in the cavity filter, and the printed circuit board being positioned at a first lateral side of the main jointing rod;
• a notch filter being located in the cavity filter, and the notch filter being positioned at a second lateral side of the main jointing rod;
• the second lateral side of the main jointing rod being disposed opposite to the first lateral side of the main jointing rod;
• and
• an induction coil being arranged in the notch filter, the induction coil comprising a spiral body portion, a first end portion and a second end portion, the first end portion extending from the spiral body portion in a first direction and the second end portion extending from the spiral body portion in a second direction opposite to the first direction, the first end portion of the induction coil extending through a top cover of the notch filter, the first end portion of the induction coil being coupled to the printed circuit board, the second end portion of the induction coil being coupled to a bottom wall of the notch filter, and the notch filter being disposed opposite to the top cover.