Abstract: The present invention discloses a wireless device, which includes a substrate and an antenna. The antenna includes a printed antenna element and a 3-dimensional antenna element. The printed antenna element is printed on the substrate, while the 3-dimensional antenna element is disposed on the substrate and coupled to the printed antenna element. The printed antenna element and the 3-dimensional antenna element jointly have a physical length of a desired frequency.

Abstract: A system and method is provided for downhole wired-pipe communication and/or power transmission. The system includes first and second couplers each comprising a dielectric substrate, an electric dipole arranged on the dielectric substrate, a dielectric encapsulation surrounding the dielectric substrate and the electric dipole, and an electric shield surrounding the dielectric encapsulation. In operation, the electric dipoles are adapted to exchange radiofrequency signals and/or electrical power at radiofrequencies with each other by means of near-field dipole-dipole interaction. The one or more electric dipoles may be of the quarter-wavelength dipole type or of the half-wavelength dipole type. In a first embodiment, the dielectric substrate may form a generally circular ring and the coupler may be adapted to be rotatably movable against another coupler.

Abstract: An antenna structure includes a first radiation arm, a second radiation arm, a feed end, and a ground end. The second radiation arm is perpendicularly connected to the first radiation arm. The first radiation arm and the second radiation arm jointly form a junction, both the feed end and the ground end are positioned adjacent to the junction.

Abstract: An example method may involve forming, in a first metal layer, a first half of waveguide channels including an input waveguide channel, a plurality of wave-dividing channels, and a plurality of wave-radiating channels. The input waveguide channel may include an input port for receiving electromagnetic waves into the waveguide channels, and the first half of the plurality of wave-radiating channels may include wave-directing members configured to propagate sub-portions of waves from the first metal layer to another metal layer. The method may also involve forming, in a second metal layer, a second half of the waveguide channels. The second half of the wave-radiating channels may include pairs of output ports configured to radiate the sub-portions of waves out of the second metal layer. The method may further involve fastening the first metal layer to the second metal layer so as to substantially align the halves of the waveguide channels.

Abstract: An antenna includes a dielectric multilayer substrate that includes a first conductor layer and a second conductor layer different from the first conductor layer, the first conductor layer including a first conductor, the first conductor including a first split ring part, the first split ring part surrounding a first opening part and being divided by a first split part, and a power feed line that is provided on the second conductor layer, the power feed line including a first end and a second end, the first end being connected to the first split ring part, the second end spanning the first opening part and extending to a region opposing the first conductor.

Abstract: An antenna structure includes a metallic member, a radiating portion, and a second matching circuit. The metallic member includes a front frame, a backboard, and a side frame. The side frame defines a slot. The front frame defines a first gap, a second gap, and a fourth gap communicating with the slot and extending across the front frame. A portion of the front frame between the first gap and the second gap forms a first radiating section; another portion between the second gap and the fourth gap forms a third radiating section. The radiating portion crosses the second gap and connects to the first radiating section and the third radiating section; an end of the second matching circuit electrically connects to the radiating portion, the other end connects to a ground. A wireless communication device using the antenna structure is provided.

Abstract: A system for testing advanced antennas includes an antenna unit controller, a radio frequency instrument, and a test controller. The antenna unit controller is configured to connect to a device that includes an advanced antenna under test in an anechoic chamber. The radio frequency instrument is connected to a probe antenna in the anechoic chamber. The test controller is configured to control the test of the advanced antenna by controlling the antenna unit controller to reconfigure the advanced antenna under test, and by controlling the radio frequency instrument to communicate wirelessly with the device via the probe antenna in each of a sequence of multiple configurations of the advanced antenna while the advanced antenna remains in the anechoic chamber.

Abstract: An apparatus (180) comprising: a first conductive layer (30) defining a first slot (46) having an open end and a closed end, the first slot (46) being configured to receive an inductive coupler (64) therein; and a capacitive member configured to tune the first conductive layer (30) to resonate in an operational frequency band.

Abstract: A two-dimensional antenna includes a ground plane, a primary radiator element, and at least one switchable radiator element. The ground plane comprises an electrically conductive material and is electrically coupled to an electrical ground. The primary radiator element is disposed in a coplanar relationship to said ground plane and is electrically coupled to a signal path of a transceiver. The at least one switchable radiator element is disposed in a coplanar relationship to the ground plane and the primary radiator element and is selectably electrically couplable to one of the signal path of the transceiver and the electrical ground.

Abstract: The present invention relates to a dual-polarization antenna including an isolation providing device including: a transmission antenna element outputting a transmission signal provided via a feeder through a first port; a receiving antenna element receiving a reception signal so as to provide same to the second port; a first coupler distributing part of the transmission signal; an equalizer equalizing the distributed signal from the first coupler to a preset waveform; a second coupler receiving the output of the equalizer so as to couple same to a signal output to the second port; and a conductor forming a signal delivery path between the first coupler, the equalizer, and the second coupler.

Abstract: A multiband antenna structure includes a matching portion, a first radiator, and a second radiator. The first radiator and the second radiator extend from a first edge of the matching portion. The second radiator and the matching portion resonate a first mode. The first radiator and the matching portion resonate a second mode. The slot, the first radiator, and the matching portion resonate a third mode. The second radiator includes a first connection section, a second connection section, a third connection section, and a fourth connection section. The first connection section is perpendicularly connected to a first end of the first edge. The second connection section is perpendicularly connected to the first connection section and extends parallel to the first edge. The third connection section is parallel to the first connection section. The fourth connection section is parallel to the second connection section.

Abstract: The radar system include a plurality of radiating elements arranged in a linear array configured to radiate electromagnetic energy. The radar system also includes a waveguide configured to guide electromagnetic energy between (i) each of the plurality of radiating elements and (ii) a waveguide feed. The radiating elements are coupled to a first side of the waveguide. The radar system additionally includes a waveguide feed configured to couple the electromagnetic energy between the waveguide and a component external to the waveguide. The waveguide feed is coupled to the second side of the waveguide at a position between two of the radiating elements. Further, the radar system includes a power dividing network defined by the waveguide and configured to divide the electromagnetic energy injected by the waveguide feed based on a taper profile.

Abstract: A method for upgrading a dual-band antenna assembly to a tri-band antenna assembly is provided. The dual-band antenna assembly includes a main reflector, and first and second antenna feeds arranged in a coaxial relationship and directed toward the main reflector. The first and second antenna feeds are for first and second frequency bands, respectively. The method includes positioning a third antenna feed through a medial opening in a center of the main reflector, with the third antenna feed directed towards the first and second antenna feeds. The third antenna feed is for a third frequency band. A subreflector is positioned between the main reflector and the first and second antenna feeds. The subreflector includes a frequency selective surface (FSS) material that is reflective for the third frequency band and transmissive for both the first and second frequency bands.

Abstract: Disclosed herein is antenna device that includes: a first metal member having a first main surface; a second metal member having a second main surface parallel to the first main surface; and an antenna coil having a coil axis perpendicular to the first and second main surfaces, wherein the first metal member constitutes at least a part of a housing of a portable electronic device in which the antenna coil is mounted, at least one slit is formed between the first and second metal members, an inner diameter section of the antenna coil overlaps with the slit in planar view, and the slit has a constant width at least in a region that overlaps with the antenna coil in planar view.

Abstract: A distributed antenna system (DAS) includes a wideband antenna device having respective transmit and receive antennas disposed in a single package and arranged to provide mutual isolation so that in use noise from the transmit antenna is isolated from the receive antenna, whereby reception is possible at the same frequency as transmission.

Abstract: An antenna system having reduced back radiation is disclosed. The antenna system includes an antenna and ground plane. The antenna includes electro-textiles and is configured to operate in at least the frequency range between 1.1-1.6 GHz. The ground plane includes electro-textiles and is configured to operate as a frequency selective surface with electronic band gap characteristics to suppress edge and curved surface diffraction effects. In this system, the antenna and ground plane are configured to be located on a curved surface and to radiate with a directional radiation pattern having attenuated back lobes.

Abstract: An apparatus includes an antenna element. The antenna element includes a first portion of a multi-layer printed circuit board (PCB) and a cap covering at least part of the first portion of the multi-layer PCB. The multi-layer PCB includes multiple substrates, and the first portion of the multi-layer PCB includes a first slot through the multiple substrates. The cap includes a second slot and defines a space between the first portion of the multi-layer PCB and the cap. The cap and a conductive layer of the multi-layer PCB form a waveguide structure through which wireless signals radiate from the antenna element.

Abstract: Techniques for tuning a crossed-field antenna are provided. An example of an antenna system includes a D-plate with a D-plate feed conductor, such that the D-plate is a horizontal conductor raised above and insulated from a ground plane, an E-cylinder with an E-cylinder feed conductor, such that the E-cylinder is a vertical hollow conductive cylinder of smaller diameter than the D-plate, which is mounted concentrically above and insulated from the D-plate, a transmitter tuning circuit configured to receive a signal from a transmitter, an E-cylinder tuning circuit operably coupled to the transmitter tuning circuit and the E-cylinder feed conductor, and a D-plate tuning circuit operably coupled to the transmitter tuning circuit and the D-plate feed conductor.

Abstract: An antenna structure includes a first conductor, a high-frequency blocking unit, and a second conductor. The first conductor includes a feeding segment, a coupling segment spaced apart from the feeding segment, and a DC blocking unit connected between the feeding segment and the coupling segment. The high-frequency blocking unit is connected to the coupling segment. The second conductor is spaced apart from the first conductor and couples with the coupling segment. An end of the second conductor is connected to a ground, and the second conductor is provided without connecting any capacitance member and any inductance member. The coupling segment is used as a capacitor electrode for detecting an external object. When the coupling segment is in a capacitor electrode mode, a capacitance value between the coupling segment and the external object is variable according to a distance between the coupling segment and the external object.

Abstract: Apparatus and methods for enhanced antenna port isolation are disclosed. In one embodiment, a spatially compact patch antenna apparatus is disclosed. A plurality of walls are incorporated into the antenna assembly's bottom cover. The walls are located under the radiating element located on a top cover of the antenna assembly. The walls are in one implementation oriented orthogonally with respect to one another, and are placed adjacent to respective antenna feeds. The walls are then at least partly metallized using, for example, a laser direct structuring (LDS) process, and are further connected to a ground plane of an external substrate. By incorporating the metallized wall structures on the existing plastic structure of the bottom cover, isolation between the antenna ports is improved without requiring installation of additional components, use of slots in the ground plane, or increased physical separation (i.e., distance). Manufacturing cost and consistency are also advantageously improved.