Surge protected coaxial termination
First Claim
1. A surge-protected coaxial termination comprising:
- a metallic outer body having a central bore extending therethrough along a longitudinal axis between first and second ends of the metallic outer body, the central bore being bounded by an inner wall having an inwardly-directed radial step extending into the central bore and defining, along with the inner wall;
a first portion of the central bore disposed on a first side of the radial step,a second orifice portion of the central bore disposed generally at the radial step, anda third portion of the central bore disposed on a second opposing side of the radial step;
a center conductor extending into the central bore of the metallic outer body and extending into each of the first, second and third portions of the central bore, the center conductor comprising;
a first cylindrical portion disposed at least partially within the first portion of the central bore,a second central portion disposed at least partially within the second orifice portion of the central bore in close proximity to the radial step of the body to form a spark gap therebetween, anda third cylindrical portion disposed at least partially within the third portion of the central bore, the third cylindrical portion of the center conductor at least partially surrounded by an insulator layer; and
air within at least a portion of the spark gap formed between the radial step of the body and the second central portion of the center conductor.
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0 Petitions
Accused Products
Abstract
A surge-protected coaxial termination includes a metallic outer body, a center conductor extending through a central bore of the outer body, and a spark gap created therebetween to discharge high-voltage power surges. A plurality of dielectric insulators surrounds the center conductor on opposite sides of the spark gap. High impedance inductive zones surround the spark gap to form a T-network low pass filter that nullifies the additional capacitance of the spark gap. An enlarged portion of a center conductor mitigates deleterious effects of arcing. An axial, carbon composition resistor is disposed inside the outer body, and inside the dielectric insulator to absorb the RF signal, and prevent its reflection.
1061 Citations
23 Claims
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1. A surge-protected coaxial termination comprising:
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a metallic outer body having a central bore extending therethrough along a longitudinal axis between first and second ends of the metallic outer body, the central bore being bounded by an inner wall having an inwardly-directed radial step extending into the central bore and defining, along with the inner wall; a first portion of the central bore disposed on a first side of the radial step, a second orifice portion of the central bore disposed generally at the radial step, and a third portion of the central bore disposed on a second opposing side of the radial step; a center conductor extending into the central bore of the metallic outer body and extending into each of the first, second and third portions of the central bore, the center conductor comprising; a first cylindrical portion disposed at least partially within the first portion of the central bore, a second central portion disposed at least partially within the second orifice portion of the central bore in close proximity to the radial step of the body to form a spark gap therebetween, and a third cylindrical portion disposed at least partially within the third portion of the central bore, the third cylindrical portion of the center conductor at least partially surrounded by an insulator layer; and air within at least a portion of the spark gap formed between the radial step of the body and the second central portion of the center conductor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification