Radiating elements include a first and second dipole arms that extend along a first axis and that are configured to transmit RF signals in a first frequency band. The first dipole arm is configured to be more transparent to RF signals in a second frequency band than it is to RF signals in a third frequency band, and the second dipole arm is configured to be more transparent to RF signals in the third frequency band than it is to RF signals in the second frequency band. Related base station antennas are also provided.

Single band and multiband wireless antennas are an important element of wireless systems. Competing tradeoffs of overall footprint, performance aspects such as impedance matching and cost require not only consideration but become significant when multiple antenna elements are employed within a single antenna such as to obtain circular polarization transmit and/or receive. Accordingly, it would be beneficial to provide designers of a wide range of electrical devices and systems with compact single or multiple frequency band antennas which, in addition to providing the controlled radiation pattern and circular polarization purity (where required) are impedance matched without substantially increasing the footprint of the antenna and/or the complexity of the microwave/RF circuit interfaced to them, whilst supporting multiple signals to/from multiple antenna elements in antennas employing them. Solutions present achieve this through provisioning one or more capacitive series reactances discretely or in combination with one or more shunt capacitive reactances.

A wireless communication structure, a display panel, and a wireless communication apparatus. The wireless communication structure includes a loop structure including a first connection end, a second connection end, and a coil body. At least a part of the coil body is connected between the first connection end and the second connection end; the antenna includes a millimeter-wave antenna unit configured to transmit and/or receive wireless signals in millimeter-wave band, and the millimeter-wave antenna unit is connected to the coil body. The millimeter-wave antenna unit is connected to the coil body of the loop structure, so that not only the loop structure and the antenna can be arranged in a limited space, but also a desired optical performance of the display screen can be ensured.

An end-fire antenna for wideband low form factor applications includes a first metal layer, a second metal layer, and a dielectric layer disposed between the first and second metal layers. An open cavity formed in the dielectric layer that is filled with air, the cavity defined by a pair of sidewalls that extend from an aperture of the cavity to a rear wall of the cavity, where the depth of the aperture is defined between the aperture and the rear wall. The cavity is formed by selecting the width of the aperture of the cavity and the depth of the cavity such that the antenna achieves the same gain during operation irrespective of a variation in the thickness of the antenna.

Base station antennas are provided herein. A base station antenna includes a plurality of vertical columns of low-band radiating elements configured to transmit RF signals in a first frequency band. The base station antenna also includes a plurality of vertical columns of high-band radiating elements configured to transmit RF signals in a second frequency band that is higher than the first frequency band. The vertical columns of high-band radiating elements extend in parallel with the vertical columns of low-band radiating elements in a vertical direction.

Base station antennas are provided herein. A base station antenna includes a plurality of vertical columns of low-band radiating elements configured to transmit RF signals in a first frequency band. The base station antenna also includes a plurality of vertical columns of high-band radiating elements configured to transmit RF signals in a second frequency band that is higher than the first frequency band. The vertical columns of high-band radiating elements extend in parallel with the vertical columns of low-band radiating elements in a vertical direction.

An electronic device includes at least one processor, a first antenna comprises a first conductive patch disposed on a first layer, a first transmission line disposed on the first layer and electrically connected to one point of the first conductive patch, a ground disposed on a second layer and a dielectric disposed on a third layer between the first layer and the second layer, the first conductive patch has a shape of a rectangle in which a first corner portion of the rectangle and a second corner portion of the rectangle are removed, and the at least one processor transmits and/or receives at least one of a first RF signal having a first polarization characteristic and a second RF signal having a second polarization characteristic.

An AR device comprising (1) a frame dimensioned to be worn on a head of a user and (2) a lens stack coupled to the frame and positioned in an optical path of the user such that the user is able to see through at least a portion of the lens stack, wherein the lens stack comprises (A) a lens, (B) an optical waveguide that (I) is configured to display computer-generated content to the user and (II) is at least partially aligned with the lens, and (C) a radio-frequency antenna disposed on the lens. Various other apparatuses, devices, systems, and methods are also disclosed.

An inflatable beacon antenna assembly includes an inflatable sock, an antenna, an attachment port, and a ballast. The inflatable sock may have an inflated state and a deflated state, where the inflatable sock assumes an elongated configuration in the inflated state. The antenna may extend along the length of the inflatable sock. The attachment port may be configured for operable connection to an inflation mechanism. Two or more integrated antennas can be used for multi-frequency VHF/UHF beacon operation and/or a GPS antenna for position location.

An antenna structure and a mobile device including the same are provided. The antenna structure is arranged on a metal cover with an opening slot, and includes a radiator, a feeding part, a grounding element, a grounding parasitic element, an extending parasitic element, a substrate, and a matching circuit. The radiator extends along a first direction, and the feeding part is connected to the radiator and extends towards a second direction. The grounding parasitic element includes a branch part and a parasitic element body. The branch part extends from a grounding point towards the opening slot. The parasitic element body is connected to the grounding element through the branch part and extends towards a first direction. The extending parasitic element extends along the first direction. The matching circuit is electrically connected to the radiator, the grounding element, the grounding parasitic element, and the extending parasitic element.