Radiating cable (100; 100a; 100b; 100c; 100d; 100e) for radiating electromagnetic energy, comprising an inner conductor (110), an outer conductor (120) arranged radially outside of said inner conductor (110), and an isolation layer (130) arranged radially between said inner conductor (110) and said outer conductor (120), wherein said outer conductor (120) comprises one or more first openings (1202), and wherein said inner conductor (110) comprises a hollow waveguide (1100).

An antenna assembly comprises a plurality of radiating elements; an unshielded circuit; and an input terminal; wherein the radiating elements are connected to the unshielded circuit through a plurality of cables, and the unshielded circuit is connected to the input terminal through an input cable; and wherein at least one of the plurality of cables and the input cable is connected to an open connect line.

Methods and systems are provided for enhanced communication cables which may be configured for supporting at least two separate functions, including distribution of data and at least one other different function. An example enhanced cable may include an arrangement along at least a section of the cable, with that arrangement configured for supporting at least the other different function. The other different function may include illumination. The arrangement may include an illumination arrangement. The cable may include light guiding material configured for use in conjunction with the illumination arrangement. The cable may include a jacket configured to accommodate the arrangement. The cable may include one or more apertures arranged on at least one component of the cable, in accordance with a specific pattern based on the arrangement. A location and/or a shape of at least one aperture may be configured based on at least one component of the arrangement.

A communication system and method for vehicles, particularly trains, are described with the vehicle having antenna sets. Each antenna set includes a plurality of antennas mounted onto a convex-shaped vehicle roof in which an axis of one antenna set is approximately perpendicular to an axis of another antenna set and in which the antenna sets are mounted below roof level of the convex-shaped vehicle roof. A switching device is operable to switch between a first antenna configuration and a second antenna configuration based on a difference in measured signal power received at the antenna sets. The first antenna configuration is associated with a first stationary communication system of the plurality of stationary communication systems and a second antenna configuration is associated with a second stationary communication system of the plurality of stationary communication systems.

A storage unit includes a support bar for hanging items and an RFID antenna provided within a predefined distance of the support bar. When the items hanging from the support bar are adorned with RFID tags, and the RFID antenna emits electromagnetic fields in a direction of the support bar, RFID signals identifying the items are transmitted from the RFID tags to the RFID antenna, thereby enabling a placement or a removal of an item to be automatically registered, or an accounting of the available items to be automatically performed. The RFID antenna may be a portion of a transmission line that uses shields and/or dielectric materials to shape the electromagnetic fields toward a predefined direction, and the locations of items bearing RFID tags on the support bar may be determined by varying the phase of the emitted radiofrequency and determining strengths of RFID signals when the electromagnetic fields are emitted at varying phases.

In accordance with one or more embodiments, a surface wave launcher includes a launcher body configured to surround, at least in part, a transmission medium. A planar antenna includes a first antenna element, a second antenna element and an aperture, the first antenna element and the second antenna element having first portions on opposing sides of the launcher body and second portions on an aperture end of the launcher body, wherein the second portions are perpendicular to the launcher body and the transmission medium and wherein the planar antenna is configured to transmit and receive guided electromagnetic waves that propagate along the transmission medium without requiring an electrical return path. A reflector, configured to direct transmission and reception of the first guided electromagnetic wave to and from the aperture, is electrically coupled to the conductive launcher body on an end of the launcher body opposite to the aperture end of the conductive launcher body.

An in-cabin communication system performs wireless communication between a vehicle and a portable terminal carried by an occupant. The in-cabin communication system includes: a vehicular device mounted to the vehicle; and a leaky coaxial cable that is connected to the vehicular device, and that outputs an electromagnetic wave having a predetermined wavelength according to a command from the vehicular device. The leaky coaxial cable is disposed inside a steel plate of a body of the vehicle. The leaky coaxial cable is disposed at a predetermined distance, which corresponds to an integer multiple of a half-wavelength of the predetermined wavelength, from the steel plate.

An apparatus to create uniform electric and magnetic-field distribution as zeroth-order resonance in a waveguide and a cavity according to an embodiment of the present invention includes a rectangular waveguide with a rectangular-shaped cross section comprising a cavity in the inside, and a conductive helical wire inserted into the cavity of the waveguide, wherein the main body of the conductive helical wire does not contact the inner surfaces of the waveguide at a predetermined gap, and both ends of the conductive helical wire are short-circuited to the inner surface of the waveguide, so as to create a uniform electric field and magnetic field throughout the entire waveguide.

A wireless communication system including a shield room forming section, leaky transmission line, first antenna, first device, second antenna and second device. The shield room forming section covers an internal space with an electromagnetic wave reflector that blocks wireless communication. The leaky transmission line is provided with first and second leakage parts arranged inside the shield room forming section. The first antenna is arranged inside the shield room forming section and configured to be wirelessly communicable with the first leakage part. The first device is arranged inside the shield room forming section and has the first antenna. The second antenna is arranged inside the shield room forming section and configured to be wirelessly communicable with the second leakage part. The second device is arranged inside the shield room forming section and has the second antenna. The first device and the second device perform direct two-way wireless communication with each-other.

A wireless proximity detection system employs short-range wireless communication to detect the proximity of a user device within a strictly defined wireless zone and as a result trigger a desired action. The proximity detection system may utilize one or more leaky feeders to define the wireless zone and the associated received signal strength(s) detected by the user's wireless device. Alternatively, a compact planar antenna structure coupled with a highly shielded radio transceiver is used to allow a similar precise low-power radio beam to be emitted defining a small location to enable identification of a wireless device such as a smartphone in a given area in front of the device. The planar antenna structure allows a compact and low-cost fabrication method and the use of common printed circuit fabrication methods provide an integrated solution.