A composite cable (4) houses a plurality of leaky coaxial cables having mutually different radiation characteristics. The leaky coaxial cable (2a, 2b) includes therein an inner conductor and an outer conductor, and has a plurality of leakage slots. The plurality of leakage slots have different slot periods relative to the axial direction or arranged in different slot patterns. The digital wireless communication device feeds a high-frequency signal from an end of the composite cable (4) and performs MIMO (multiple-input multiple-output) communication.

Aspects of the subject disclosure may include, for example, an antenna structure that includes a dielectric antenna comprising a dielectric feedline having a feed point, and a collar that facilitates aligning a port of a waveguide system to the feed point of the dielectric feedline for facilitating transmission or reception of electromagnetic waves exchanged between the port and the feed point of the dielectric feedline, the electromagnetic waves guided by the dielectric feedline without an electrical return path. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a network termination includes a downstream channel modulator modulates downstream data into downstream channel signals to convey the downstream data via a guided electromagnetic wave that is bound to a transmission medium of a guided wave communication system. A host interface sends the downstream channel signals to the guided wave communication system and receives upstream channel signals corresponding to upstream frequency channels from the guided wave communication system. An upstream channel demodulator demodulates upstream channel signals into upstream data. Other embodiments are disclosed.

In accordance with one or more embodiments, a system can include a plurality of uninsulated conductors that is stranded together. The plurality of uninsulated conductors can form a hollow pathway that is bounded by internal conductive surfaces of at least three of the plurality of uninsulated conductors. The system can further include a communication device coupled to a first plurality of external conductive surfaces of the plurality of uninsulated conductors, where the communication device facilitates generating transmission signals at the first plurality of external conductive surfaces, and where the transmission signals induce electromagnetic waves that propagate along the hollow pathway without requiring an electrical return path. Other embodiments are disclosed.

The invention relates to a directional coupling communication apparatus where the coupling impedance can be easily matched to reduce reflections, and thus, the speed of communication channels is increased as compared to that with inductive coupling, and at the same time, the reliability of communication is improved by increasing the signal intensity. Modules having a coupler where an input/output connection line is connected to a first end, and either a ground line or an input/output connection line to which an inverse signal of a signal to be inputted into the input/output connection line connected to the above-described first end is inputted is connected are layered on top of each other so that the couplers are couplers to each other using capacitive coupling and inductive coupling.

In accordance with one or more embodiments, a system can include a plurality of cables, wherein each cable of the plurality of cables includes an insulation layer comprising a helix structure. The helix structure of each cable of the plurality of cables can facilitate formation of a plurality of interstitial pathways between the plurality of cables. The system can further include communication device coupled to the plurality of cables, where the communication device facilitates generating electromagnetic waves that propagate along the plurality of interstitial pathways without requiring an electrical return path. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a network termination includes a downstream channel modulator modulates downstream data into downstream channel signals to convey the downstream data via a guided electromagnetic wave that is bound to a transmission medium of a guided wave communication system. A host interface sends the downstream channel signals to the guided wave communication system and receives upstream channel signals corresponding to upstream frequency channels from the guided wave communication system. An upstream channel demodulator demodulates upstream channel signals into upstream data. Other embodiments are disclosed.

Aspects of the subject disclosure may include, for example, a network termination includes a downstream channel modulator modulates downstream data into downstream channel signals to convey the downstream data via a guided electromagnetic wave that is bound to a transmission medium of a guided wave communication system. A host interface sends the downstream channel signals to the guided wave communication system and receives upstream channel signals corresponding to upstream frequency channels from the guided wave communication system. An upstream channel demodulator demodulates upstream channel signals into upstream data. Other embodiments are disclosed.

A device for transmitting in multiple coupling modes has a transmission module (11), at least one periphery module (18), and an antenna (16, 17) for each of the multiple coupling modes. Further, in a method of switching between multiple coupling modes, switching is conducted between at least polling and listening phases of first and second coupling modes. The device and the method enable a seamless switching between e.g. a near field communication and a body coupled communication. Such a coupling or switching is particularly useful for performing secure transactions whereby through body coupled communication a body-worn tag is interrogated which provides a secure code for a transaction initiated through near field communication with a transaction terminal.

The disclosure relates to an arrangement 100; 200 comprising a network node 3 and one or more leaky cables 2 connected at a first end 6 thereof to a respective antenna port of a first set of antenna ports of the network node 3. The network node 3 is configured to provide wireless communication for a communication device 4. The arrangement 10 comprises: a first multiplexing device 8; 10 connected to antenna ports of a second set of antenna ports of the network node 3; a second multiplexing device 9; 11 connected to the one or more leaky cables 2 at a second end 7 thereof; an interconnecting cable 5, interconnecting the first multiplexing device 8; 10 and the second multiplexing device 9; 11, wherein the first multiplexing device 8; 10 is arranged to frequency convert signals received from the second set of antenna ports and multiplex them into the interconnecting cable 5, and arranged to demultiplex signals received from the interconnecting cable 5 and to frequency convert signals for processing by the network node 3, and wherein the second multiplexing device 9; 1 is arranged to frequency convert signals received on the one or more leaky cables 21 and multiplex them into the interconnecting cable 5, and arranged to demultiplex signals received from the interconnecting cable 5 and to frequency convert signals for transmission on the one or more leaky cables 2.