Abstract: A dual-band antenna and a wireless communications device, where the dual-band antenna includes a first antenna arranged on a first printed circuit board (PCB), a second antenna arranged on a second PCB, and a reflection panel. An operating frequency band of the first antenna is a first frequency band. An operating frequency band of the second antenna is a second frequency band. The first frequency band is higher than the second frequency band. The second PCB is disposed between the first PCB and the reflection panel. The reflection panel includes an artificial magnetic conductor. A resonant frequency band of the artificial magnetic conductor includes the second frequency band. The first frequency band is outside the resonant frequency band. The dual-band antenna has a small size.

Abstract: Antenna devices are provided, including tightly coupled arrays, transmitarrays, and reflectarrays. An antenna device can include a plurality of substrates each having an antenna element. The substrates can be provided in connected series or in an array. The substrates can be part of an origami array such that the entire array is foldable. The substrates can optionally be attached to a framework that can actuate the substrates to different configurations. By bending, folding, or otherwise repositioning the substrates/array, the electromagnetic characteristics of the antenna device can be easily reconfigured for the desired task.

Abstract: A 5G broadband antenna is disclosed herein. The 5G broadband antenna comprises a first antenna element and a second antenna element. Each of the first antenna element and the second antenna element has a main branch with a slot therein. The antenna apparatus covers a first frequency band of 617-960 MegaHertz, a second frequency band of 1.4-1.6 GigaHertz (GHZ), a third frequency band of 1.71-2.7 GHz, a fourth frequency band of 3.3 to 4.2 GHz, and a fifth frequency band of 4.3 to 6.0 GHz.

Abstract: The present invention relates to an antenna device including an integrated matching circuit being implemented by at least one controllable capacitor for a number of frequencies. The at least one controllable resonating capacitor determines a resonance frequency of the antenna device. An object of the invention is to provide a compact antenna device which can obtain a desired matching characteristic without using a separate matching circuit which limits miniaturization of the antenna system as a whole and forms a factor of limiting the efficiency of the antenna and raising cost when the antenna is incorporated into the terminal.

Abstract: A linear-to-circular polarizer antenna is disclosed. In accordance with embodiments of the invention, the polarizer antenna includes an antenna operable to transmit and receive polarized signals and a linear-to-circular polarizer coupled to the antenna. The polarizer includes a plurality of cascaded elements, waveplates or anisotropic sheets, having biaxial permittivity. Each cascaded element has a principal axis rotated at different angles relative to an adjacent element about a z-axis of a 3-dimensional x, y, z coordinate system, and each element is composed of an artificial anisotropic dielectric. The polarizer further includes impedance matching layers disposed adjacent the cascaded elements.

Abstract: Systems and techniques are described that provide for enhanced gain and radiation characteristics of antennas. The systems and techniques employ layers or cards of fractal plasmonic surfaces to provide gain to the antennas. The fractal plasmonic surfaces each include a close-packed arrangements of resonators having self-similar or fractal shapes, which may be referred to as “fractal cells.” The cards can be held by a frame adapted to fit an antenna. The FPS cards can provide benefits for gain, field emission, directivity, increased bandwidth, power delivery, and/or heat management. One or more dielectric layers or cards may be used to enhance gain and/or directivity characteristics.

Abstract: A semiconductor device package includes a circuit layer and a first antenna structure. The circuit layer includes a first surface, and a second surface opposite to the first surface. The first antenna structure is disposed on the first surface and electrically connected to the circuit layer. The first antenna structure includes a first patch, a second patch, a third patch, a first dielectric layer and a second dielectric layer. The second patch is disposed on the first patch. The first dielectric layer has a first dielectric constant (Dk), and is disposed between the first patch and the second patch. The third patch is disposed on the second patch. The second dielectric layer has a second dielectric constant and is disposed between the second patch and the third patch. The first dielectric constant is smaller than the second dielectric constant.

Abstract: An eight-frequency band antenna includes a carrier, a high-frequency segment, a low-frequency segment, a printed circuit board (PCB) and an inductor. The high-frequency segment is arranged on left side of the carrier and the low-frequency segment is arranged on right side of the carrier. The radiator on the bottom face of the carrier electrically connects with the micro strip of the PCB and the ground line of the ground metal when the carrier is fixed to the PCB. Moreover, the low-frequency segment is corresponding to a metal face with smaller area such that the low-frequency segment is at a free space to enhance the frequency response of the low-frequency segment and the bandwidth of the high-frequency segment. The area and the volume of blind hole on the carrier can adjust the effective dielectric constant to adjust the resonant frequency and bandwidth of the antenna.

Abstract: Systems and methods for improving an efficiency and a gain of a helical antenna. The methods comprise: configuring a conductive helix element of the helical antenna to comprise a proximal segment having a helical winding that extends along an axis of the conductive helix element and has a plurality of turns with linearly progressing pitch angles; configuring the conductive helix element to comprise a distal segment having a helical winding that extends along the axis of the conductive helix element and has a constant pitch angle; and coupling the distal segment to the proximal segment in a series arrangement so that a radio wave reaches a terminal velocity at a point of the coupling.

Abstract: Multi-band antenna arrays and methods of use are provided herein. An example device includes vertical surfaces arranged into a tubular configuration, where each of the vertical surfaces comprising antenna arrays is aligned along the vertical surfaces. The antenna elements are arrayed through a feed network in such a way that antenna gain is increased while elevation beam-width is reduced. The device also includes two or more radios connected to the antenna arrays on the vertical surfaces via the feed network.

Abstract: Multiple frequency agile antenna structures are described. Each of the structures allows for tuning the antenna by changing its shape geometry (without changing the overall length of the antenna) and altering the frequency characteristics using variable capacitors. This is done by allowing control of the resonant frequency of the antenna with one main tunable capacitor and for independently varying the frequency and bandwidth of the antenna structure with the use of additional tunable capacitors embedded in the antenna structure.

Abstract: A reconfigurable antenna system is described which combines active and passive components used to impedance match, alter the frequency response, and change the radiation pattern of an antenna. Re-use of components such as switches and tunable capacitors make the circuit topologies more space and cost effective, while reducing complexity of the control signaling required. Antenna structures with single and multiple feed and/or ground connections are described and active circuit topologies are shown for these configurations. A processor and algorithm can reside with the antenna circuitry, or the algorithm to control antenna optimization can be implemented in a processor in the host device.

Abstract: An electronic device includes housing including first plate, second plate, and side member, wherein side member includes first side face in first direction having first length, second side face having second length greater than first length, third side face extending parallel to first side face having first length, and fourth side face; touch screen display disposed within housing, and exposed through portion of first plate; a PCB between first plate and second plate to be parallel to second plate, wherein PCB includes ground plane and first L-shaped ground extension between first conductive region of second plate and first plate, and first L-shaped ground extension includes first portion extending in second direction from ground plane and second portion extending in first direction from first portion; and at least one first wireless communication circuit disposed on PCB and electrically connected to first point in second portion of first L-shaped ground extension.

Abstract: An over-the-air test system is provided. The over-the-air test system comprises a test chamber, a device under test, measurement equipment for performing at least one wireless measurement with respect to the device under test, and a signaling unit. In this context, the signaling unit is configured to visually and/or acoustically indicate a status of the at least one wireless measurement.

Abstract: An antenna package comprising a chip package including a plurality of feed lines, a first half antenna subassembly electrically coupled to the feed lines, and a second half antenna subassembly electrically coupled to the feed lines, wherein the first and second half antenna subassemblies point away from each other in a direction substantially perpendicular to the chip package. The antenna subassemblies may be millimeter (mm) wave antennas covering from approximately 24 to 43.5 GHz. The antenna subassemblies include a flex substrate formed from printed circuit boards (PCB) or flex-film PCB.

Abstract: An antenna is provided for a wearable personal computing device, such as a smartwatch. The antenna has a first radiating element and a second radiating element capacitively coupled to each other. The first radiating element is configured to be tunable to a first set of tuning states operating around a first set of resonant frequencies, and the second radiating element is configured to be tunable to a second set of tuning states operating around a second set of resonant frequencies. The antenna is configured to be tuned such that a tuning state from the first set of tuning states of the first radiating element can be combined with a tuning state from the second set of tuning states of the second radiating element to form a composite tuning state of the antenna. The wearable personal computing device has a housing made of a high permittivity material.

Abstract: An antenna module of a wireless communication system is provided. The antenna module includes a radiator comprising a top face to which a radio wave is radiated, a dielectric material disposed on a bottom face of the radiator, the bottom face of the radiator being opposite to the top face of the radiator, a feeding unit disposed on a bottom face of the dielectric material, the feeding unit being configured to supply an electric signal to the radiator through the dielectric material, and a support unit disposed on the bottom face of the dielectric material, the support unit comprising a metallic material.

Abstract: A linear-to-circular polarizer antenna is disclosed. In accordance with embodiments of the invention, the polarizer antenna includes an antenna operable to transmit and receive polarized signals and a linear-to-circular polarizer coupled to the antenna. The polarizer includes a plurality of cascaded elements, waveplates or anisotropic sheets, having biaxial permittivity. Each cascaded element has a principal axis rotated at different angles relative to an adjacent element about a z-axis of a 3-dimensional x, y, z coordinate system, and each element is composed of an artificial anisotropic dielectric. The polarizer further includes impedance matching layers disposed adjacent the cascaded elements.

Abstract: The present disclosure relates to a technology for designing a transmitarray antenna based on the mode and incidence angle of feed radio waves. The transmitarray antenna according to one embodiment of the present disclosure includes a plurality of transmitting surface unit cells having different surface structures and different longitudinal lengths located in a plurality of regions, wherein the transmitting surface unit cells are arranged in a mixed manner in the regions based on the different longitudinal lengths and the phase of a transmission coefficient determined based on an input phase and an output phase based on the mode and incidence angle of radio waves transmitted from a feed antenna.

Abstract: An electronic device is provided The electronic device includes a patch antenna element, at least one antenna including a first feeding unit electrically connected to the patch antenna element and a second feeding unit electrically connected to the patch antenna element so as to have a designated isolation for a signal that is input to the first feeding unit, a radio frequency integrated circuit (RFIC) which includes a first communication circuit including a first transmission circuit and a first reception circuit which are electrically connected to the first feeding unit, and a second communication circuit including a second transmission circuit and a second reception circuit which are electrically connected to the second feeding unit, and a processor.