Abstract: An antenna device comprises a first dielectric substrate; first and second antenna elements arranged on a first surface of the first dielectric substrate; a ground conductor arranged on a second surface of the first dielectric substrate; and an EBG structure arranged between the first and second antenna elements. The EBG structure comprises first patch conductors that are each arranged in contact with the first surface of the first dielectric substrate and are each electromagnetically coupled with the ground conductor; second patch conductors that are each arranged in a prescribed distance from the first surface of the first dielectric substrate in a direction opposite to the second surface, and are each electromagnetically coupled with corresponding one of the first patch conductors; and first connection conductors that electrically connect the first patch conductors with the second patch conductors.

Abstract: The disclosure concerns a microstrip patch antenna configured for operation in the WiFi bands, including 2.4 GHz and 5.2/5.8 GHz. The microstrip patch antenna includes a pair of opposing u-shaped slots embedded in the patch conductor. The patch includes a patch width configured to provide a resonance at 2.4 GHz, and a slot width configured to provide a resonance at 5.2/5.8 GHz. Thus, the antenna provides a dual band WiFi patch antenna.

Abstract: A coil apparatus of a mobile terminal is disclosed, comprising: a metal coil embedded, in a flat spiral shape, in an inner side of a rear cover of a mobile terminal; an analog switch connected between the metal coil, a wireless charging chip and a signal receiving chip. The embodiment of the present document combines an antenna for receiving a frequency modulated signal with a wireless charging coil, and uses a same group of coils, and embeds the metal coil in the inner side of the rear cover of the mobile terminal, which increases the area of the coil and lengthens the length of the coil, simultaneously improves the efficiency of the wireless charging and the performance for receiving the frequency modulated signal.

Abstract: An electronic device may include an adjustable power supply, at least one antenna, and associated antenna tuning circuitry. The antenna tuning circuitry may be an integral part of the antenna and may include a control circuit and at least one tunable element. The tunable element may include radio-frequency switches, continuously/semi-continuously adjustable components such as tunable resistors, inductors, and capacitors, and other load circuits that provide desired impedance characteristics. The power supply may provide power supply voltage signals to the antenna tuning circuitry via inductive coupling. The power supply voltage signals may be modulated according to a predetermined lookup table during device startup so that the control circuit is configured to generate desired control signals. These control signals adjust the tunable element so that the antenna can support wireless operation in desired frequency bands.

Abstract: A mobile device includes a ground plane, an antenna element, and one or more ring resonators. The ground plane has a first region and a second region. The antenna element is disposed on the first region. The ring resonators are disposed on the second region. Each of the ring resonators includes a first loop structure and a second loop structure. The ring resonators are configured to enhance the radiation gain of the antenna element in a zenith direction.

Abstract: An antenna with tightly coupled elements is provided. The antenna includes a plurality of planar elements. Each element is connected to a signal line, and is coupled to at least one other element. The elements are arranged in one or more linear arrays. A first array of elements can be provided on a first plane, while a second array of elements can be provided on a second plane. Moreover, elements included in the first array can can at least partially overlap elements included in the second array. Alternatively, a single array of elements formed on a first plane can be provided, with coupling elements that are capacitively connected to one element, and directly, are electrically connected to an adjacent element.

Abstract: A distributed broadband, omni-dual-band monopole antenna system for use in a Wi-Fi access point. The distributed omni-dual-band antenna system may include an antenna array that includes 4, 6, or 8 monopole antennas arranged in a circular array fashion along the perimeter of the access point. Each monopole antenna may be associated with a single Wi-Fi radio of the access point, and each of the antennas for the different radios are interleaved in order to provide omni-coverage with minimal distortion; that is, each antenna of the access point is alternated with antennas for different radios. A broadband printed omni-dual-band monopole antenna comprising three horizontal radiating elements arranged in an S-shape and a single vertical radiating element connected to the bottom-most horizontal radiating element is also disclosed.

Abstract: An antenna includes a polymer coating having a VLF/LF element and an HF/VHF element embedded therein. A blocking choke is interposed between the VLF/LF element and the antenna feed t block HF/VHF signals. Small chokes are regularly positioned on the VLF/LF element to eliminate resonances caused by mutual capacitance between the elements. Reactive loads are positioned in said HF/VHF element at regular intervals for optimizing performance of the antenna in the HF/VHF radio bands. In further embodiments the antenna is provided as a floating antenna with the elements helically arranged therein.

Abstract: An omni circularly-polarized antenna comprises: upper and lower layers of metal strips placed horizontally and having identical spoke-like shapes, each of the layers of said metal strips composed of a center and a plurality of spokes connected to the center, the plurality of spokes, at a circumferential position of the spoke-like shape, having extensions extending towards an identical direction along the circumference, wherein extending directions of the extensions of the spokes in the upper and lower layers of metal strips are opposite; metal poles with a number being identical with a number of the spokes in the metal strips, the metal poles vertically interconnecting ends of the extensions of the spokes in the upper and lower layers of metal strips; a coaxial connector comprising an elongated inner conductor and an outer conductor, wherein the elongated inner conductor is connected to the center of the upper layer of metal strip, and the outer conductor is connected to the center of the lower layer of metal

Abstract: A mobile terminal comprises: a terminal body; and a first antenna device and a second antenna device disposed at one side of the terminal body in an adjacent manner, and formed to operate at different frequency bands, wherein the first antenna device and the second antenna device are provided with conductive members each having a slit at one side thereof, and wherein the conductive members form part of an appearance of the terminal body.

Abstract: An impedance converting circuit module includes a first matching circuit, a feeding-circuit-side matching circuit interposed between the first matching circuit and a feeding circuit, and an antenna-side matching circuit interposed between the first matching circuit and a radiating element. The feeding-circuit-side matching circuit performs impedance matching between a feeding port of the feeding circuit and the first matching circuit, and the antenna-side matching circuit performs impedance matching between a port of the radiating element and the first matching circuit.

Abstract: In one embodiment, a sub-reflector assembly for a reflector antenna has (i) a waveguide transition at a waveguide end of the sub-reflector assembly and configured to fit within a waveguide, (ii) a dielectric radiator connected to the waveguide transition and extending both laterally and back towards the waveguide end of the sub-reflector assembly, and (iii) a sub-reflector connected to the dielectric radiator. By configuring the dielectric radiator to extend both laterally and back towards the dielectric end of the assembly, radiated energy from the waveguide is directed such that the sub-reflector assembly can be used with shallow reflector dishes (e.g., F/D ratio greater than 0.25) and still achieve sufficiently high directivity.

Abstract: A multi-frequency array antenna, includes a reflective metal plate, a low-frequency radiation column element which is arranged on the reflective metal plate and operating in a first frequency band range, and a high-frequency radiation column element operating in a second frequency band range. The low-frequency radiation column element comprises several low-frequency radiation units arranged at an equal first distance in the axial direction of a first reference axis. The high-frequency radiation column element comprises several high-frequency radiation units arranged at an equal second distance in the axial direction of the first reference axis. The first distance is 2.5 times the second distance. At least one of the low-frequency radiation units is nested with one high-frequency radiation unit locationally corresponding thereto, and at least one of the low-frequency radiation units is axially located between two adjacent high-frequency radiation units close to the low-frequency radiation unit.

Abstract: An adaptable antenna apparatus for a base station is provided. The adaptable antenna apparatus includes a first antenna having a first antenna array, a second antenna rotatably coupled to the first antenna and having a second antenna array, and a main controller provided in one of the first antenna and the second antenna, wherein the main controller is configured to apply a control signal to the first antenna and the second antenna.

Abstract: An antenna with an FR-4 dielectric material layer includes at least one metallization layer having metallic dipoles organized into two clusters. Each of the two clusters includes metallic dipoles generally elongated along a common axis to produce signals of specific polarization. Each of the two clusters is oriented orthogonal to the other to produce two separate, orthogonally polarized signals. Each of the two clusters is associated with a dedicated stripline feed, positioned and oriented to maximize gain of the radiating element. Power from each stripline planar feed couples to the metallic dipoles through a dedicated aperture in the stripline ground plane.

Abstract: A remote control device includes a first loop antenna portion in the form of a printed metallic trace on a first side of a printed circuit board (PCB) and a second loop antenna portion in the form of a raised metallic structure on a second side of the PCB. The first and second loop antenna portions are connected together through the PCB to form a loop antenna.

Abstract: Disclosed are a NFC antenna module which maximizes antenna performance by mounting a radiation sheet in such a manner as to partially overlap with an antenna sheet and a portable terminal comprising the same. The disclosed NFC antenna module comprises: an electromagnetic wave shielding sheet; an antenna sheet laminated on the electromagnetic wave shielding sheet and having a radiation pattern formed along the outer periphery of a central portion thereof; and a radiation sheet laminated on the antenna sheet so as to form an overlapping area with the radiation pattern and having a recess formed therein, through which the central portion is exposed.

Abstract: Disclosed is an NFC antenna that facilitates a touch operation of a portable electronic instrument. An NFC antenna includes insulating substrates and an antenna coil having a front surface pattern and a back surface pattern formed on antenna surfaces that are present on the same planes. The insulating substrates are molded into an L shape together with a magnetic sheet sandwiched therebetween. The antenna coil is also arranged in the L shape in a similar manner. When the NFC antenna is arranged at a corner of a smart phone, a coil opening faces to a position of a touch corner. NFC can be started in a short time by a touch operation using the touch corner.

Abstract: A transformable mobile device operating in a notebook mode or a tablet mode is provided. The transformable mobile device includes a base, an upper cover, a hinge, a main antenna, and a ground metal plane. The hinge is connected between the base and the upper cover. The main antenna is disposed in the upper cover. The ground metal plane is disposed in the base, or on an outer surface of the base. The ground metal plane includes a main portion and a float portion. The float portion is completely separate from the main portion.

Abstract: An antenna to communicate at a defined frequency; a feed point; and a near-field coupler array coupled to the feed point is described. The near-field coupler array may include a substrate; a ground plane on a first side of the substrate; and a near-field coupler array disposed on a second side of the substrate. The ground plane may include a first aperture and a second aperture. The near-field coupler array can include a first coupler element aligned with the first aperture and a second coupler element aligned with the second aperture. A first width of the first coupler element can be larger than a second width of the first aperture. A third width of the second coupler element can be larger than a fourth width of the second aperture. The first width and the third width can have a correlation to the defined frequency.