Broadband surge protector with stub DC injection

A surge protector, comprising:

• a through-section having a through inner conductor and a through outer conductor, a first end and a second end;
• a first connector coupled to the first end of the through-section configured to conductively couple the first end of the through-section to a first cable;
• a second connector coupled to the second end of the through-section configured to conductively couple the second end of the through-section to a second cable;
• a stub having a stub inner conductor, a stub outer conductor, a first end and a second end;
• the stub being coupled to the through-section, wherein the stub inner conductor is conductively coupled to the through inner conductor at the first end of the stub, and the stub outer conductor is conductively coupled to the through outer conductor at the first end of the stub, at least a portion of the stub inner conductor being substantially hollow and having a helical aperture disposed therein;
• a charge elimination device conductively coupled between the stub inner conductor and a grounding device;
• a radio frequency short circuit bypass electrically coupled between the stub inner conductor and the stub outer conductor;
• and
• a DC injector conductively coupled between the stub inner conductor and the stub outer conductor.

A method of protecting a cable system from electrical surges, while permitting RF signals and DC current to flow through the cable system, the method comprising the steps of:

• interposing a surge protector in a stub portion of the cable system, the cable system having a coaxial through-section, the through section having a through inner conductor and a through outer conductor, the stub portion having a stub inner conductor, a stub outer conductor, a first end, and a second end;
• conductively coupling the stub inner conductor to the through inner conductor at the first end of the stub;
• conductively coupling the stub outer conductor to the through outer conductor at the first end of the stub, a portion of the stub inner conductor being substantially hollow and having a generally cylindrical outer wall with a helical aperture formed in the generally cylindrical outer wall;
• conductively coupling a charge elimination device between the stub inner conductor and a grounding device;
• electrically coupling a radio frequency short circuit bypass between the stub inner conductor and the stub outer conductor;
• and
• conductively coupling a DC injector between the stub inner conductor and the stub outer conductor.