Abstract: Embodiments are disclosed for a continuous hand pose tracking system employing at least one wrist-worn antenna, from which real-time dielectric loading resulting from different hand poses). The sensor data is interpreted by a machine learning backend, which outputs a fully-posed three-dimensional (3D) hand that can be continuously tracked. In some embodiments, two degrees of freedom (2DOF) wrist angle and micro-gestures are tracked. The hand pose tracking system can be extended to include two or more and/or different types of antennas operating at different self-resonances. In an embodiment, a method comprises: determining, with at least one processor of a wrist-worn device, a complex impedance characteristic variation based on a dynamic finite electric ground plane of at least one antenna coupled to the device; and predicting, with the at least one processor, a hand pose of a user wearing the device on a their wrist based on the determined complex impedance characteristic variation.

Abstract: Methods and systems for laser etching substrates to fine tune antennas for wireless communication are provided. A method includes laser etching an antenna element design into a substrate material. The antenna element design is for receiving conductive material to form an antenna structure. The method also includes laser etching a first area of the substrate material to change an intrinsic property of the substrate material in order to control an electrical characteristic of the antenna structure.

Abstract: A portable electronic device can include a housing that at least partially defines an internal volume and an external surface of the device. The housing can include an electromagnetically transparent portion that partially defines the exterior surface. The portable electronic device can include an antenna disposed in the internal volume and a sensing circuit disposed in the internal volume to receive a signal transmitted from the antenna.

Abstract: An apparatus for detecting worn and/or unworn status of a wearable host device includes one or more first antennas, a second antenna, and a radio-frequency (RF) circuit to measure a dielectric loading based on an RF isolation. The second antenna is placed within a portion of the wearable host device that is substantially in contact with the skin of a user, and the RF isolation is between at least one of the one or more first antennas and the second antenna.

Abstract: Methods and systems for laser etching substrates to fine tune antennas for wireless communication are provided. A method includes laser etching an antenna element design into a substrate material. The antenna element design is for receiving conductive material to form an antenna structure. The method also includes laser etching a first area of the substrate material to change an intrinsic property of the substrate material in order to control an electrical characteristic of the antenna structure.

Abstract: A wearable electronic device includes a conductive housing, which has a main body and at least a first pair of conductive lugs external to and mechanically coupled to the main body. The main body of the conductive housing forms at least part of an antenna structure that is adapted for at least one of generating or receiving the wireless radio frequency signal. The wearable electronic device further includes a non-conductive pin, which extends between the ends of the conductive lugs, and a use location attachment. The use location attachment includes a plurality of segments, where at least one of the segments, which most closely mechanically couples to the non-conductive pin and the first pair of conductive lugs, is nonconductive, and where other ones of the plurality of segments of the use location attachment are conductive.

Abstract: Methods and systems for laser etching substrates to fine tune antennas for wireless communication are provided. A method includes laser etching an antenna element design into a substrate material. The antenna element design is for receiving conductive material to form an antenna structure. The method also includes laser etching a first area of the substrate material to change an intrinsic property of the substrate material in order to control an electrical characteristic of the antenna structure.

Abstract: The present invention provides a wearable electronic device adapted for supporting wireless radio frequency communications including at least one of generating or receiving a wireless radio frequency signal. The wearable electronic device includes a conductive housing, which has a main body and at least a first pair of conductive lugs external to and mechanically coupled to the main body. Each of the conductive lugs has a first end that is mechanically coupled to the main body of the conductive housing and a second end which extends away from the main body along a length of the conductive lug. The main body of the conductive housing forms at least part of an antenna structure that is adapted for at least one of generating or receiving the wireless radio frequency signal. The wearable electronic device further includes a non-conductive pin, which extends between the second ends of the first pair of conductive lugs, and a use location attachment.

Abstract: Disclosed apparatuses obtain real-time performance measurements and adaptively select multiple-input, multiple-output (MIMO) antennas to improve MIMO antenna performance. A correlation estimator determines an approximation of instantaneous antenna correlation values. One method includes obtaining a channel quality indicator (CQI) measurement for first and second antennas of a mobile device. The method determines a composite CQI for the two antennas and estimates the antenna correlation for the first and second antennas based on the composite CQI. The method can include performing a lookup operation in a CQI table mapping composite CQI to coding rates. The method can include obtaining a signal-to-noise ratio (SNR) measurement for the first and second antennas of the mobile device, and estimating the antenna correlation for the first and second antennas based on the composite CQI and the SNR measurement.

Abstract: Methods and systems for laser etching substrates to fine tune antennas for wireless communication are provided. A method includes laser etching an antenna element design into a substrate material. The antenna element design is for receiving conductive material to form an antenna structure. The method also includes laser etching a first area of the substrate material to change an intrinsic property of the substrate material in order to control an electrical characteristic of the antenna structure.

Abstract: A mobile device accesses antenna equipment of at least a first antenna augmentation peripheral (AAP) using a first set of radio channels for communication between the mobile device and the first AAP and uses a second set of radio channels for communication with a wide area network (WAN). The mobile device receives a first performance metric for at least one channel of the second set of radio channels from the first AAP using the first set of radio channels. The mobile device determines a composite performance metric using the first performance metric and a second performance metric related to the second set of radio channels. The mobile device transmits the composite performance metric as the mobile device performance metric to the WAN and obtains a downlink radio resource assignment from the WAN based on the composite performance metric.

Abstract: A mobile communication device has a first antenna and a second antenna wherein a primary subscriber identification module (“SIM”) is linked to the first antenna. The second antenna is shared between a secondary SIM transceiver path and a multiple-input, multiple-output (“MIMO”) transceiver path. A power splitter disposed in the secondary SIM transceiver path is configured to adaptively set a power split between the MIMO transceiver path and the secondary SIM transceiver path based on a current signal-to-noise ratio associated with the MIMO transceiver path.

Abstract: A peripheral electronic device (106) can be equipped with a coupler, which in one embodiment is a mechanical coupler (136). A radio-frequency interface (108) allows a radio-frequency transceiver (110) of one electronic device to take advantage of one or more antennas (1101,1102,1103,1104) disposed within the peripheral electronic device (106). For example, the radio-frequency interface (108) can increase the matrix channel order by making the at least some additional MIMO antennas available for usage by the radio-frequency transceiver (110). The mechanical coupler can be configured to allow a camera or display of an inserted device to add image data functionality as well.

Abstract: Disclosed apparatuses obtain real time performance measurements and adaptively select MIMO antennas to improve MIMO antenna performance under given conditions. A correlation estimator determines an approximation of instantaneous antenna correlation values. One method includes obtaining a CQI measurement for a first antenna and a second antenna of a mobile device. The method proceeds by determining a composite CQI for the two antennas and estimating the antenna correlation for the first antenna and second antenna using the composite CQI. The method may further include performing a table lookup operation in a CQI table that maps composite CQI including at least a first and second MIMO stream to coding rates. The method may further include obtaining an SNR measurement for the first antenna and the second antenna of the mobile device, and estimating the antenna correlation for the first antenna and second antenna using the composite CQI and the SNR measurement.

Abstract: Apparatuses and methods are disclosed for determining a dominant figure-of-merit for an antenna system comprising a primary antenna, and at least two diversity antennas. The dominant figure-of-merit is determined from at least two figure-of-merit types related to performance of the primary antenna when paired with one or the other of the at least two diversity antennas. The disclosed apparatuses and methods include switching to one or the other of the at least two diversity antennas, to obtain the dominant figure-of-merit, in response to a signal quality metric's relationship to the at least two figure-of-merit types.

Abstract: A method and apparatus for obtaining a set of optimized angles of arrival for a corresponding set of radio links. The set of radio links model a radio environment of a wireless unit operating at a particular location within in a radio system. Each radio link represents a different propagation path between the wireless unit and transmitting antenna operating within the radio system. Each optimized angle of arrival represents an angle of arrival of one radio link with reference to the wireless unit. Each probe antenna of a set of probe antennas is positioned at a corresponding angle of the set of optimized angles of arrival. A corresponding set of probe radio signals is transmitted from the set of probe antennas.

Abstract: Apparatuses and methods are disclosed for determining a dominant figure-of-merit for an antenna system comprising a primary antenna, and at least two diversity antennas. The dominant figure-of-merit is determined from at least two figure-of-merit types related to performance of the primary antenna when paired with one or the other of the at least two diversity antennas. The disclosed apparatuses and methods include switching to one or the other of the at least two diversity antennas, to obtain the dominant figure-of-merit, in response to a signal quality metric's relationship to the at least two figure-of-merit types.

Abstract: A method and apparatus for obtaining a set of optimized angles of arrival for a corresponding set of radio links. The set of radio links model a radio environment of a wireless unit operating at a particular location within in a radio system. Each radio link represents a different propagation path between the wireless unit and transmitting antenna operating within the radio system. Each optimized angle of arrival represents an angle of arrival of one radio link with reference to the wireless unit. Each probe antenna of a set of probe antennas is positioned at a corresponding angle of the set of optimized angles of arrival. A corresponding set of probe radio signals is transmitted from the set of probe antennas.

Abstract: A method is used for reconfiguring an electronic device, having at least three antenna elements, between different antenna modes. The method includes configuring, by a controller, the electronic device into a first antenna mode, wherein at least two of the antenna elements are coupled together to operate as a single antenna. The method further includes, reconfiguring, by the controller, the electronic device from the first antenna mode into a second antenna mode, wherein at least one antenna configured for use during the second antenna mode includes only a single antenna element.

Abstract: A method (600) and an RF circuit (100, 400, 500) for a wireless communication device that mitigates near electric fields generated by the wireless communication device. At least one resonant structure (108, 408, 408?) can be configured to resonate at or near at least one operating frequency of an antenna (102) of the wireless communication device. The antenna can be a component of the RF circuit. The resonant structure can be electromagnetically coupled to the antenna to mitigate the near electric fields at the operating frequency in order to comply with an applicable hearing aid compatibility (HAC) specification.