Abstract: Antennas and MIMO antenna systems in a housing of an electronic device are described. Each of the antennas includes a first RF radiating member having a first frequency range and a second RF radiating member having a second frequency range. The first frequency range is 4-5 GHz and the second frequency range is 3-4 GHz, and each antenna has an operating frequency range of at least 3-5 GHz. A plurality of the antennas may be arranged in a housing of an electronic device to form MIMO antenna systems.

Abstract: An antenna structure includes a metal housing, a first radiator, and an isolating portion. The metal housing includes a front frame, a backboard, and a side frame. The side frame is positioned between the front frame and the backboard. The side frame defines a slot and the front frame defines a gap. The gap communicates with the slot and extends across the front frame. The metal housing is divided into at least a long portion and a short portion by the slot and the gap. The first radiator is positioned adjacent to the short portion. The isolating portion is connected to the first radiator to improve isolation between the short portion and the first radiator.

Abstract: Disclosed is a substrate-integrated waveguide slot antenna including a lower substrate having a substrate-integrated waveguide structure, the lower substrate being provided in the upper surface thereof with at least one slot, whereby an electromagnetic wave is guided by the substrate-integrated waveguide structure and is emitted through the slot, and an upper substrate formed on the lower substrate, the upper substrate having a metasurface configured such that a plurality of unit cells is arranged at predetermined intervals, whereby the electromagnetic wave dispatched through the slot is reemitted by the metasurface.

Abstract: According to various aspects, exemplary embodiments are provided of antenna assemblies. In an exemplary embodiment, an antenna assembly generally includes at least one antenna element configured to be operable for receiving high definition television signals. The antenna assembly may also include at least one reflector spaced-apart from the antenna element that is configured to be operable for reflecting electromagnetic waves generally towards the antenna element.

Abstract: An antenna includes feed pads; a radiating portion disposed on one side of the feed pads and spaced apart from the feed pads, the radiating portion being constituted by a single conductor plate; and a ground part disposed on an opposite side of the feed pads from the radiating portion; wherein each of the feed pads has a polygonal shape.

Abstract: A vehicular antenna device includes an antenna unit transmitting and receiving various electromagnetic waves or signals, an antenna cover configured to cover the antenna unit, and a pad attached to an inner peripheral surface of the antenna cover. The antenna unit is attached to the antenna cover with the pad disposed therebetween. The pad includes a postural adjusting member formed therein. The postural adjusting member is configured to be elastically compressed in a condition in which the antenna device is attached to a roof of a vehicle.

Abstract: An antenna structure includes a metal housing, a first feed source, and a second feed source. The metal housing includes a front frame, a backboard, and a side frame. The side frame is positioned between the front frame and the backboard. The side frame defines a slot and the front frame defines a gap. The gap communicates with the slot and extends across the front frame. The metal housing is divided into at least a long portion and a short portion by the slot and the gap. The first feed source is electrically connected to the long portion and the second feed source is electrically connected to the short portion.

Abstract: An electronic device is provided. The electronic device includes a housing, a first antenna radiator configured to transmit a signal having a target frequency to a vehicle and exposed to an outside of the housing, a second antenna radiator spaced apart from the first antenna radiator, configured to transmit the signal having the target frequency to the vehicle, and exposed to the outside of the housing, a conductive line disposed in an interior of the housing and electrically connecting the first antenna radiator and the second antenna radiator, and a feeding part configured to supply power to one point of the conductive line, wherein a first electrical length formed by the feeding part, the one point of the conductive line, and the first antenna radiator is different from a second electrical length formed by the feeding part, the one point of the conductive line, and the second antenna radiator.

Abstract: A system for mitigating radio frequency interference includes a multiple patch antenna array including a multiplicity of patch antenna elements. The multiple patch antenna array is positioned relative to an interfering antenna such that signals from the interfering antenna cause interference with the multiple patch antenna array. The system also includes an auxiliary antenna positioned relative to the multiple patch antenna array. The system additionally includes a device to generate a spatial null in a direction to the interfering antenna from the multiple patch antenna array in response to a first signal from the auxiliary antenna and a second signal from the multiple patch antenna array. The first signal and the second signal are generated in response to a transmitted signal being received by the auxiliary antenna and the multiple patch antenna array. The spatial null permits simultaneous operation of the multiple patch antenna array and the interfering antenna.

Abstract: A chip antenna includes a coil; and a core including a body portion around which the coil is wound and supporting portions disposed on both sides of the body portion, wherein the core includes a second groove formed in the supporting portions and accommodating an end portion of the coil.

Abstract: An antenna assembly includes a radio frequency (RF) connector connected to a first end of a coaxial cable and a wire antenna attached to a second end of the coaxial cable. The wire antenna may be made of a shape memory alloy, such as nitinol. Examples of RF connectors include U.FL, IFEX, WAX, IPX, AMC, MHF and UMCC connectors that allow the wire antenna to be removably attached to a printed circuit board (PCB) of a lighting control device and to avoid hardwiring the antenna to the PCB. The device that includes the antenna assembly may be incorporated into a luminaire for wireless control of the luminaire. The lighting control device may be installed within the luminaire, such that the wire antenna is positioned between a light source and a diffuser. A number of such luminaires may be combined to provide an intelligent lighting system.

Abstract: A back cover includes: a back cover body, an antenna structure, a first hand-held part, and a second hand-held part arranged apart from the first hand-held part. The antenna structure includes a first part whose first side is separated from one end of the back cover body by a first slit, a second part separated from a second side of the first part by a second slit, and a third part for connecting the first and second parts. The first hand-held part extends to the second part from the back cover body and separated from a third side of the first part by a third slit. The second hand-held part extends to the second part from the back cover body and separated from a fourth side of the first part by a fourth slit, where the back cover body and the antenna structure are made of a metal material.

Abstract: A novel system and method for creating a lightweight antenna is disclosed. Each lightweight antenna is formed using a foam material. This foam material is coated with a machinable material, which is machined to the desired dimensions. The machinable material is then plated with a metal. This creates a radiator that has the size and performance of traditional notch antennas, but weighs far less. This foam radiator may be mounted to a variety of substrate types, not limited to microwave laminate materials. Embodiments of mixed substrates or even multi-layered foam substrates are possible. The substrate may be a conventional printed circuit board (PCB), a PCB with sleeved coaxial vias, or a foam substrate. The lightweight antenna may be used in a plurality of applications, including ultra-wideband array systems and space-based applications.

Abstract: Arrays that are deployable and can change their electromagnetic behavior by changing their shape are provided. The arrays can steer the beam using folding techniques and/or can achieve multiple operation states by folding the structure. An array can include a foldable substrate with antenna elements disposed thereon. In a folded state, a first plurality of unit cells is visible from above the array and can be configured to steer in a particular first direction and/or operate at a particular first frequency. In the unfolded state a second plurality of unit cells, and also possibly the first plurality of unit cells, are visible from above the array and can be configured to steer in a particular second direction and/or operate at a particular second frequency.

Abstract: An antenna structure includes a metal housing, a first feed source, and a first radiator. The metal housing includes a front frame, a backboard, and a side frame. The side frame defines a slot and the front frame defines a gap. The metal housing is divided into at least a long portion and a short portion by the slot and the gap. The first radiator is positioned in the housing and includes a first radiating portion and a second radiating portion. One end of the first radiating portion is electrically connected to the first feed source and another end of the first radiating portion is spaced apart from the long portion. One end of the second radiating portion is electrically connected to the first feed source and another end of the second radiating portion is electrically connected to the short portion.

Abstract: A spiral antenna, comprising a first arm and a second arm. The first arm and second arm are interlaced with each other. Each arm has a plurality of turns comprising an inner subset of circular turns, and an outer subset of turns, electrically coupled to the inner subset, having a shape with only four lines of symmetry. An array of such spiral antennas disposed a substrate that extends in a direction of a longitudinal axis and having a round cross section in a plan transverse to the longitudinal axis.

Abstract: A rotatable reflectarray antenna system and methods for reconfiguring electromagnetic (EM) characteristics of the reflectarray antenna are provided. The rotatable reflectarray antenna includes a plurality of rotatable reflecting units coupled with each other; and an actuator system coupled with the plurality of rotatable reflecting units and configured to rotate the reflecting units with respect to axes of the reflecting units. Each rotatable reflecting unit includes a substrate and a plurality of reflectarray patterns disposed on surfaces of the substrate and each reflectarray pattern includes a plurality of reflectarray elements. The actuator system is configured to rotate the plurality of reflecting units to different operational positions such that when layout of the plurality of reflectarray patterns on the plurality of reflecting unit is changed, at least one EM characteristic of the reflectarray antenna is reconfigured.

Abstract: An electronic device includes a housing including a back cover and a cover glass facing away from the back cover, a coil type radiator disposed between the back cover and the cover glass, at least one printed circuit board (PCB) disposed between the radiator and the cover glass, a communication circuit disposed on the PCB and feeding to the radiator, a first connecting member, a second connecting member, and one or more elements.

Abstract: A microwave system comprising a center fed parabolic reflector; a radio transceiver, said transceiver disposed on a circuit board and coupled to a radiator, said radiator disposed on the circuit board and extending orthogonally from a surface of the circuit board. Embodiments also include directors on the circuit board and a sub-reflector comprising a thin plate disposed on a weather proof cover and said sub-reflector having a substantially concave surface with a focus directed towards the radiator. The circuit board may be physically integrated within the feed mechanism of the center fed parabolic reflector and the radio transceiver is configured to provide OSI layer support.

Abstract: A communication device is provided. The communication device comprises a metal back cover electrically connected to a system ground plane; a first antenna unit for generating a first operating frequency band of the communication device; a second antenna unit for generating a second operating frequency band of the communication device. The first antenna unit includes a first signal source electrically connected to a first metal frame via a first matching circuit. The second antenna unit includes a second signal source electrically connected to a second metal frame via a second matching circuit. The first matching circuit and the second matching circuit are configured to adjust bandwidths and frequency ratios of the first operating frequency band and the second operating frequency band.