Systems and methods for suppressing radiofrequency noise
AssigneePpc Broadband, Inc.
InventorsErdogan Alkan, André Martineau
Life of this patent
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Abstract
A system for suppressing radiofrequency noise includes a modem and an energy transfer device. The modem includes a coaxial radiofrequency port that is configured to connect to a first ground. The energy transfer device includes a first portion and a second portion. The first portion is configured to connect to the coaxial radiofrequency port and the first ground. The second portion is configured to connect to a second ground that is isolated from the first ground. The first and second portions are configured to transfer electrical energy therebetween via electromagnetic coupling.
Claims17
A system for suppressing radiofrequency noise, comprising:
- a modem comprising a coaxial radiofrequency port that is configured to connect to a first ground;
- a transformer comprising:
- a first port;
- a first coil configured to connect to the first port and the first ground;
- and
- a second coil, wherein the first and second coils are configured to transfer electrical energy therebetween via electromagnetic coupling, and wherein the second coil is configured to connect to a second ground that is isolated from the first ground;
- a choke configured to connect to the coaxial radiofrequency port, the first port, and the first ground, wherein the choke is configured to attenuate a shield current traveling therethrough via field conversion, and wherein the choke comprises a coaxial cable that is wrapped one or more times around a toroid;
- a power cord comprising a neutral wire that is configured to connect to the choke and the first ground;
- and
- a capacitor configured to connect to the neutral wire, the choke, and the first ground, wherein the capacitor is configured to prevent power signals from traveling therethrough and to cause noise signals to travel back to the modem, wherein the coaxial radiofrequency port comprises:
- an outer conductor that is configured to connect to the first ground;
- and
- an inner conductor that is configured to connect to a power source of the modem.
A system for suppressing radiofrequency noise, comprising:
- a modem comprising a coaxial radiofrequency port that is configured to connect to a first ground;
- and
- an energy transfer device comprising:
- a first portion configured to connect to the coaxial radiofrequency port and the first ground;
- and
- a second portion configured to connect to a second ground that is isolated from the first ground, wherein the first and second portions are configured to transfer electrical energy therebetween via electromagnetic coupling, wherein the coaxial radiofrequency port comprises:
- an outer conductor that is configured to connect to the first ground;
- and
- an inner conductor that is configured to connect to a power source of the modem.
A system for suppressing radiofrequency noise, comprising:
- a modem comprising a radiofrequency port that is configured to connect to a first ground;
- an energy transfer device comprising:
- a first portion configured to connect to the first ground;
- and
- a second portion configured to connect to a second ground that is isolated from the first ground, wherein the first and second portions are configured to transfer electrical energy therebetween via electromagnetic coupling;
- and
- a choke configured to be connected to and positioned between to the radiofrequency port and the first portion,
- wherein the choke comprises a first end that is configured to connect to the coaxial radiofrequency port and a second end that is configured to connect to the first portion, wherein the first and second ends are both configured to connect to the first ground, and wherein the first and second ends of the choke each comprise an outer conductor and an inner conductor, wherein the outer conductors of the first and second ends are configured to connect to the first ground, and wherein the inner conductors of the first and second ends are not configured to connect to the first ground.
Dependencies are inferred from the claim text.