7425 results about "Coaxial cable" patented technology

A communication device consistent with certain implementations has a coaxial cable having length and first and second ends. The coaxial cable further has a central conductor, a dielectric insulator surrounding the central conductor, and an electric shield conductor surrounding the dielectric insulator. The dielectric insulator serves as a dielectric waveguide having a characteristic impedance Z at an operating frequency range. A termination for electrical energy coupled into or out of the dielectric insulator at approximately the characteristic impedance Z at the operating frequency range to utilize the dielectric insulator as a waveguide for transmission of signals along the length of the coaxial cable, and wherein the center conductor is further used to communicate an electrical signal between the first and second ends. This abstract is not to be considered limiting, since other embodiments may deviate from the features described in this abstract.

A cable television (CATV) entry adapter interfaces to a CATV network and and serves as a hub in a Multimedia over Coax Alliance (MoCA) network. MoCA signals are bypassed around the CATV communication paths within the entry adapter to maintain adequate signal strength and to allow a passive port of the entry adapter to be used as part of the MoCA network. MoCA signals are suppressed from exiting the CATV entry adapter onto the CATV network.

The system includes, at least first and second antennas receiving first and second radio frequency signals, and a multiplexing system converting the first and second radio frequency signals to first and second optical signals and multiplexing the first and second optical signals for transmission over the optical fiber. A central processing base station is adapted for connection to the optical fiber. The central processing base station demultiplexes the first and second optical signals from the optical fiber, converts the first and second optical signals into the first and second radio frequency signals, and processes the first and second radio frequency signals to obtain information signals. In another embodiment, a conductor such as a coaxial cable replaces the optical fiber, and the multiplexer multiplexes the first and second radio frequency signals onto the conductor. In a further embodiment, the central processing base station uses the same techniques to send signals to an access point for transmission.

The communication system includes a hybride fiber / coax distribution network. A head end provides for downstream transmission of telephony and control data in a first frequency bandwidth over the hybrid fiber / coax distribution network and reception of upstream telephony and control data in a second frequency bandwidth over the hybrid fiber / coax distribution network. The head end includes head end multicarrier modem for modulating at least downstream telephony information on a plurality of orthogonal carriers in the first frequency bandwidth and demodulating at least upstream telephony information modulated on a plurality of orthogonal carriers in the second frequency bandwidth. The head end further includes a controller operatively connected to the head end multicarrier modem for controlling transmission of the downstream telephony information and downstream control data and for controlling receipt of the upstream control data and upstream telephony information. The system further includes service units, each service unit operatively connected to the hybrid fiber / coax distribution network for upstream transmission of telephony and control data in the second frequency bandwidth and for receipt of the downstream control data and telephony in the first frequency bandwidth. Each service unit includes a service unit multicarrier modem for modulating at least the upstream telephony information on at least one carrier orthogonal at the head end terminal to another carrier in the second frequency bandwidth and for demodulating at least downstream telephony information modulated on at least a band of a plurality of orthogonal carriers in the first frequency bandwidth. Each service unit also includes a controller operatively connected to the service unit multicarrier modem for controlling the modulation of and demodulation performed by the service unit multicarrier modem. A method of monitoring communication channels, a distributed loop method for adjusting transmission characteristics to allow for transmission of data in a multi-point to point communication system, a polyphase filter technique for providing ingress protection and a scanning method for identifying frequency bands to be used for transmission by service units are also included. Also provided is a method and apparatus for performing a Fast Fourier Transform (FFT). In one embodiment, a scalable FFT system is built using a novel dual-radix butterfly core.

A powerline communications device comprises a powerline communications interface and at least one other communications interface configured to communicate over a computing network. The powerline communications interface is further configured to receive electrical power. The computing network may comprise mediums including powerlines, telephone lines, and / or coaxial cables. In some embodiments, the powerline communications interface may communicate with a network apparatus, such as a personal computer, via an Ethernet interface. The powerline interface, the telephone line interface, and / or the coaxial cable interface may all be associated with the same media access control (MAC) address. The powerline communications device may receive a message via a first medium and repeat the message via a second medium based on a quality of service (QoS) metric. In some embodiments, the powerline communications device may communicate using multiple frequency bands.

A broadband access transmission network integrating the functions of electric power network, communication network, TV network and Internet relates to network transmission. It includes a broadband transmission network of 10 KV power distribution network and a broadband transmission network of low-voltage power distribution network. These two transmission networks are connected via distribution transformers and optical fiber connectors. The broadband transmission network of 10 KV power distribution network is composed of optical compound power lines, wires, transformer substations, machine rooms, taps, insulating jackets, insulating waterproofing outer jackets and optical fiber connectors. The broadband transmission network of low-voltage power distribution network is composed of optical compound power lines, coaxial cable compound power lines, taps, insulating jackets, optical access points, distributors, modems and two-way amplifiers. The invention can perform high-speed broadband communication and power transmission on the same compound wires. It utilizes the existing power network sufficiently and prevents the cost of rebuilding the communication network, cable TV network and Internet, and can simultaneously perform building, operating, maintaining and managing of these networks.

A permanent connector interconnects a hard-line coaxial cable to a connection housing. A contact is interconnected with and extends coaxially through a connector body. A collet one-piece with the contact receives a central conductor of the coaxial cable, while a sealing member and mandrel receive an outer conductor of the coaxial cable between them. A compression body positioned radially adjacent a portion of the connector body moves axially between first and second positions, wherein when the compression body is in its first position, the coaxial cable is removable from within the connector, and when the compression body is in its second position, the coaxial cable is not removable from within the connector. The compression body acts indirectly upon the sealing member so that an electrical connection is made between the sealing member and the outer conductor of the cable when the compression body is in its second position.

A radio frequency (RF) communications system includes a local RF communications device and an RF antenna including a conical RF launch structure coupled to the local RF communications device, and an elongate electrical conductor having a proximal end coupled to the conical RF launch structure and a distal end spaced apart from the conical RF launch structure to define an elongate RF coverage pattern. The elongate conductor may be a coaxial cable. At least one remote RF communications device, within the elongate RF coverage pattern, wirelessly communicates with the local RF communications device.

A connector includes a connector body, a post member, and a fastener member. In one embodiment, the connector provides for coupling a coaxial cable having a center conductor, an insulator core, an outer conductor, and a sheath to a terminal device. A nut coupled to either the connector body or post member can be used on the connector to make the connection to the device. The post member has a cavity that accepts the center conductor and insulator core of a coaxial cable. An outer cavity is formed by the connector body and the post member such that the outer conductor and the sheath of a coaxial cable are positioned therebetween. The fastener member, in a pre-installed first configuration is movably fastened onto the connector body. The fastener member can be moved toward the nut into a second configuration in which the fastener member coacts with the connector body so that the connector sealingly grips the coaxial cable.

A powerline communications device comprises a powerline communications interface and at least one other communications interface configured to communicate over a computing network. The powerline communications interface is further configured to receive electrical power. The computing network may comprise mediums including powerlines, telephone lines, and / or coaxial cables. In some embodiments, the powerline communications interface may communicate with a network apparatus, such as a personal computer, via an Ethernet interface. The powerline interface, the telephone line interface, and / or the coaxial cable interface may all be associated with the same media access control (MAC) address. The powerline communications device may receive a message via a first medium and repeat the message via a second medium based on a quality of service (QoS) metric. In some embodiments, the powerline communications device may communicate using multiple frequency bands.

A power line communications that includes a communications device having a first port and a second port is provided. The first port may include a first modem and be communicatively coupled to a power line such as a medium voltage power line. The second port may include a second modem and be communicatively coupled to the first end of a non-power line medium, such as a coaxial cable. The system may include an interface device that couples the second end of the coaxial cable to the internal power line network of the customer premises to provide communications to the user devices coupled to the internal power line network.

A connector having a conductive member is provided, wherein the connector comprises a connector body capable of sealing and securing a coaxial cable, and further wherein the conductive member, such as an O-ring, physically seals the connector, electrically couples the connector and the coaxial cable, facilitates grounding through the connector, and renders an electromagnetic shield preventing ingress of unwanted environmental noise.

A coaxial cable connector includes tubular post, a coupler secured over an end of the tubular post for securing the connector to an appliance, and an outer body secured to the tubular post. An electrical grounding path is maintained between the coupler and the tubular post whether or not the coupler is tightly fastened to the appliance. The electrical grounding path is provided by a resilient, electrically-conductive grounding member disposed between the tubular post and the coupler. Alternatively, the connector includes conductive grease at a point where mating portions of the tubular post and coupler have closely matching dimensions.

A connector is provided for interconnecting a coaxial cable to an electrical device. The connector has an internal body and an external body which are assembled together, and which can be activated to clamp upon and seal to an inserted coaxial cable without disassembling the external body from the internal body. The external body includes a deformable inner collar that permits the connector to be attached and sealed to cables of varying thickness as are found on common single foil and braid cable, Tri Shield cable and Quad Shield cable.

The invention discloses a full-carbon coaxial line and a manufacturing method of the full-carbon coaxial line, and belongs to the technical field of integrated circuits. Graphene serves as a monatomic layer thickness, is coiled into a cylinder and form an inner conductor of the coaxial line with a small radius (can be as small as the nm level), and the inner conductor of the coaxial line transfers currents. Meanwhile, a signal layer or multiple layers of graphene serve(s) as an outer conductor of the coaxial line to form a boundary of electromagnetic waves in a space, and graphite oxide serves as medium materials between the inner conductor and the outer conductor to limit and guide oriented transmission of electromagnetic wave energy. The coaxial line is quite small in size and applicable to radio-frequency and microwave integrated circuits.

A system including associated equipment for transmitting radio-frequency power line carrier signals on high voltage ac or dc transmission lines within a multi-conductor bundle, one path for which is provided by one or more conductors located at the center of the bundle, and the other by the remaining conductors connected in electrical parallel and arrayed in a generally circular pattern around the center. Insulated conductor spacers hold the conductors in their symmetrical configuration and insulate the center conductor, allowing it to serve as a radio frequency path similar to that in a conventional coaxial cable. The system provides low attention, low vulnerability to external noise and low radiation of the carrier signal while providing redundant channels—three for ac transmission lines and two for bipolar dc transmission lines.

A communication system for distributing information via a network to one or more subscribers includes a multi-port switch, one or more radio frequency (RF) modems coupled to respective ports of the switch, a combiner and a transmitter. The switch forwards source information to the RF modems based on address information. Each RF modem modulates and up converts information from the switch to an RF signal within a respective subscriber channel of the television broadcast spectrum. Each channel is assigned to one or more subscribers, and each subscriber is allocated unshared bandwidth. Each channel may be further divided into unshared bandwidth increments, so that multiple subscribers may share a single channel. The combiner combines modulated information from each RF modem into a combined signal and the transmitter transmits the combined signal to the subscribers via the network. An HFC network including a distribution point and one or more optical nodes is contemplated, each optical node serving a particular geographic area via a corresponding coaxial cable. Each subscriber destination includes a gateway device or the like that is tuned to a corresponding channel to retrieve source information from that channel, and to deliver the information to one or more local subscriber devices. The gateway further includes converters, a modulator and an up converter to receive and transmit subscriber information upstream to the distribution point. The gateways and an address resolution server enforce point to point communications. A bandwidth manager allocates bandwidth and monitors bandwidth usage.

Disclosed is a scalable, hierarchical, distributed network architecture and processes for the delivery of high-performance, end-to-end online multimedia services, including Internet services such as World Wide Web access. The network architecture connects a high-speed private backbone to multiple network access points of the Internet, to a network operation center, to a back office system, and to multiple regional servers in regional data centers. Each of the regional servers connects to several caching servers in modified head-ends, which in turn connect via fiber optics to many neighborhood nodes. Finally, each node connects via coaxial cable to multiple end-user systems. The processes include those for replicating and caching frequently-accessed content, and multicasting content customized per region or locality.

A compression connector for coupling an end of a coaxial cable and method of use is discussed. The connector includes a post, configured to be inserted into an end of the coaxial cable around the dielectric and under the protective outer jacket thereof. The device further includes a connector body, operatively positioned with respect to the post and including a plurality of closeable fingers, a fastener member, slidably receivable with respect to the connector body for closing the closeable fingers and for securing, in both directions, axial movement of the fastener member with respect to the connector body, an outer compression sleeve, and a threaded nut, engageable with the outer compression sleeve for securely coupling the hand installable compression connector to a coaxial cable interface port. An advantage of this connector is installation without the need for specialized tools.

A POD module system includes a housing, a coaxial cable connector formed on the housing and connectable to a first device to receive a cable signal, a port formed on the housing to receive a wire or wireless signal from a second device, a module unit to process at least one of the cable signal and the at least one of the wireless signal to generate at least one of a copy protection signal and one of video and audio signals, respectively, and a connector formed on the housing and connectable to a third device to transmit the at least one of the copy protection signal and the one of video and audio signals to the third device such that the third device generates at least one of an image and a sound to correspond to the at least one of the copy protection signal and the one of video and audio signals.