A multiband antenna has a conductor main portion, a first ground terminal and a second ground terminal. The conductor main portion is long in a first direction and extends in a horizontal plane defined by the first direction and a second direction. The conductor main portion has a first long edge and a second long edge at both ends thereof in the second direction, respectively. The conductor main portion is formed with a slot and an opening portion. The slot is long in the first direction. The opening portion is provided in the first long edge and connects the slot with an outside of the conductor main portion. The first ground terminal and the second ground terminal extend from the second long edge. The first ground terminal and the second ground terminal are connected to a host conductor when the multiband antenna is used.

A wireless device operates in a plurality of frequency bands and/or frequency regions and comprises a radiating system having an RF transceiver, a booster element, a radiation booster, or a modular multi-stage element; a ground plane layer on a PCB, an external port connected to the RF transceiver, and a multiband and/or multi-region radiofrequency system that comprises a switch. The radiating system also comprises a feeding architecture that connects the antenna element or the booster element to the radiofrequency system, the feeding architecture comprising a feeding line connected to a booster or antenna element and at least two feeding line extensions that are connected to a switch of the radiofrequency system and to the feeding line. A multi-region radiofrequency system comprises a switch and at least two matching networks selectable through the switch, the at least two matching networks including two stages: a pre-matching stage and a common matching stage.

Techniques described herein provide cancelation of cross-polarization interference during simultaneous receipt of radiofrequency signals (e.g., an X-signal and a Y-signal) in a same frequency channel in nominally orthogonal polarizations. Though nominally orthogonally polarized, each signal contributes some cross-polarization interference to the other. Embodiments receive and demodulate each signal by a corresponding demodulator to generate corresponding X-symbol and Y-symbol decision signals, referenced to a common clock domain. An X-channel adaptive canceler (X-CAC) generates an X-output signal by using one or more Y-symbol decision signals adaptively to cancel cross-polarization interference from the Y-signal, and a Y-CAC generates a Y-output signal by using one or more X-symbol decision signals adaptively to cancel cross-polarization interference from the X-signal (e.g., the X-CAC and the Y-CAC each using a first-order least mean squares control loop). The resulting X-output signal and Y-output signal can be further decoded and output by the receiver to downstream systems and/or components.

An electronic device may have a first conductive sidewall at an upper end, a second conductive sidewall at a lower end, and a conductive rear wall. First and second antennas may be formed at the upper end and may include slots with edges defined by the first sidewall and the rear wall. Third, fourth, fifth, and sixth antennas may be formed at the lower end and may include slots with edges defined by the second sidewall and the rear wall. Each antenna may cover multiple frequency bands. First order and third order modes of the slots may contribute to the frequency responses of the third through sixth antennas. A display controller may be mounted at the lower end and may impose a lower limit on the frequencies covered by the third through sixth antennas. The first and second antennas may cover lower frequencies than the third through sixth antennas.

An electronic device may have a first conductive sidewall at an upper end, a second conductive sidewall at a lower end, and a conductive rear wall. First and second antennas may be formed at the upper end and may include slots with edges defined by the first sidewall and the rear wall. Third, fourth, fifth, and sixth antennas may be formed at the lower end and may include slots with edges defined by the second sidewall and the rear wall. Each antenna may cover multiple frequency bands. First order and third order modes of the slots may contribute to the frequency responses of the third through sixth antennas. A display controller may be mounted at the lower end and may impose a lower limit on the frequencies covered by the third through sixth antennas. The first and second antennas may cover lower frequencies than the third through sixth antennas.

Designs and techniques for manufacturing microelectronic antenna tuners are provided. An example microelectronic antenna system includes a radio frequency integrated circuit comprising a plurality of radio frequency signal ports disposed in a first area, a plurality of tuning devices disposed in a second area of the radio frequency integrated circuit, at least one antenna element disposed on a substrate coupled to the radio frequency integrated circuit, and at least one feedline disposed in the substrate and configured to communicatively couple the at least one antenna element, at least one of the plurality of tuning devices, and one of the plurality of radio frequency signal ports.

Designs and techniques for manufacturing microelectronic antenna tuners are provided. An example microelectronic antenna system includes a radio frequency integrated circuit comprising a plurality of radio frequency signal ports disposed in a first area, a plurality of tuning devices disposed in a second area of the radio frequency integrated circuit, at least one antenna element disposed on a substrate coupled to the radio frequency integrated circuit, and at least one feedline disposed in the substrate and configured to communicatively couple the at least one antenna element, at least one of the plurality of tuning devices, and one of the plurality of radio frequency signal ports.

Apparatuses and systems for wearable devices such as eyewear are described. According to one embodiment, the wearable device includes a frame, onboard electronics components, and an antenna disposed around an eyepiece area of the frame that is configured to hold an optical element. The antenna is configured for inductive coupling. In some embodiments, a switch coupled to the antenna allows selection between circuitry for inductive charging of a battery and near-field communication (NFC) circuitry for communicating data via the antenna.

An antenna structure according to an embodiment of the present disclosure includes a transmission line, and a radiator connected to the transmission line, the radiator having a linear perimeter region and a plurality of curved perimeter regions separated by the linear perimeter region, wherein an outermost portion of the radiator from the transmission line in a planar view has any one of the curved peripheral regions. A broadband antenna structure covering low frequency and high frequency bands is provided.

An antenna structure is provided, including a substrate, an impedance control line, a first impedance control area, and a metal element. The impedance control line is located on the first side of the substrate. The first impedance control area is arranged on the substrate, located on one side of the impedance control line, close to the second end of the impedance control line, and separated from the impedance control line by a first hollow part. The metal element is arranged on the substrate and connected to the first end and the second end of the impedance control line, and the first impedance control area. As such, the present invention controls the impedance in the high frequency range between 5.85 and 7.25 GHz through the impedance control line and the first impedance control area, provides a complete current flow area, and improves the impedance control effect, efficiency, and gain.