Abstract: A wearable electronic device includes a bezel encasing device electronics and having a metallic portion and a dielectric insert portion. The metallic portion of the bezel is grounded at a point of zero potential and coupled to a differential feed structure that spans the dielectric insert portion to feed opposite ends of the metallic portion.

Abstract: A wireless radio communication device includes a printed circuit board, a plurality of antennas formed on the printed circuit board, and one or more out-of-plane isolation elements conductively coupled to a ground plane of the printed circuit board. Each antenna extends in a reference plane or in a plane parallel to the reference plane. Each out-of-plane isolation element extends in a direction transverse to the reference plane. Each antenna of the plurality of antennas is configured to resonate in a selected radio frequency (RF) band. The one or more out-of-plane isolation elements are configured to conduct a current in response to excitation of one or more associated antennas that contributes to at least partially cancelling an RF transmission coupling between the one or more antennas and one or more other antennas of the plurality of antennas.

Abstract: Embodiments are disclosed for an antenna system comprising an over-resonant antenna conductor and a radio receiver electrically coupled to the over-resonant antenna conductor. The antenna system further comprises a capacitor electrically coupled to the over-resonant antenna conductor and sized to match the antenna conductor to a selected frequency.

Abstract: Planar antennas comprise capacitively coupled antenna patches. A first antenna patch configured to radiate in a first frequency band is coupled to a transmitter/receiver. The first antenna patch is situated to capacitively couple radiation in the first frequency band and a second frequency band to second and third antenna patches, respectively. The first and second antenna patches extend antenna bandwidth in the first frequency band, and the third antenna patch is bent so that the antenna patches can be situated in a predetermined substrate area.

Abstract: Antennas, antenna systems, and components used in antenna systems are provided herein. In various examples, an integrated antenna for receiving signals for a plurality of functional modules in a computing device may include a first plurality of antenna elements for receiving signals at wireless communication frequencies and a second plurality of antenna elements for receiving signals at wireless charging frequencies. The first and the second pluralities of antenna elements may have at least one common antenna element, which may be coupled to one or more of the second plurality of antenna elements using at least one low-pass filter. The at least one common antenna element is de-coupled from one or more of the plurality of functional modules operating at the wireless communication frequencies using at least one high-pass filter.

Abstract: A wearable electronic device includes a bezel encasing device electronics and having a metallic portion and a dielectric insert portion. The metallic portion of the bezel is grounded at a point of zero potential and coupled to a differential feed structure that spans the dielectric insert portion to feed opposite ends of the metallic portion.

Abstract: A wireless radio communication device includes a printed circuit board, a plurality of antennas formed on the printed circuit board, and one or more out-of-plane isolation elements conductively coupled to a ground plane of the printed circuit board. Each antenna extends in a reference plane or in a plane parallel to the reference plane. Each out-of-plane isolation element extends in a direction transverse to the reference plane. Each antenna of the plurality of antennas is configured to resonate in a selected radio frequency (RF) band. The one or more out-of-plane isolation elements are configured to conduct a current in response to excitation of one or more associated antennas that contributes to at least partially cancelling an RF transmission coupling between the one or more antennas and one or more other antennas of the plurality of antennas.

Abstract: A dual band printed antenna pair operates simultaneously at both WLAN frequency bands (2.4 GHz/5 GHz). The antenna pair provides high isolation between both antennas while having an efficient over the air performance. The antenna pair achieve greater than 20 dB isolation at 2.4 GHz and 5 GHz band, while having antennas positioned in close proximity. The high isolation is accomplished using an orthogonal antenna configuration (exploiting orthogonal polarization) and a parasitic element to further enhance isolation at 2.4 GHz. The antenna pair and parasitic element are printed on a Printed Circuit Board (PCB) adding relatively little cost to the Radio Frequency (RF) interface. The PCB is then fixed on top of a metal chassis with the antenna keep out area overhanging a corner of the metal chassis to enhance performance.

Abstract: Embodiments are disclosed for an antenna system comprising an over-resonant antenna conductor and a radio receiver electrically coupled to the over-resonant antenna conductor. The antenna system further comprises a capacitor electrically coupled to the over-resonant antenna conductor and sized to match the antenna conductor to a selected frequency.

Abstract: Multiband antenna decoupling networks and systems including multiband antenna decoupling networks are provided herein. A multiband decoupling network is connected to two or more closely spaced antennas. The multiband decoupling network includes lumped components and is reconfigurable to decouple the two or more antennas at a plurality of distinct communication frequency bands. The multiband decoupling network may include tunable lumped components and be reconfigurable through tuning the tunable lumped components. A pi network may be used for the multiband decoupling network. At least one separate impedance-matching network may also be used to match the input impedance of the multiband decoupling network to the output impedance of transmission lines leading to the multiband decoupling network.

Abstract: A multiband monopole antenna for a mobile device is disclosed that can be dynamically switched between a quarter-wave monopole antenna and a half-wave folded monopole antenna. In one embodiment, a radiator element can be built into at least part of a decorative trim on an outer casing of the mobile device. A circuit element embedded into the radiator element can electrically connect or disconnect a radiator element tip from a grounded portion of the decorative trim. In some embodiments, the circuit element can be a switch or a passive filter element, such as an inductor/capacitive-based filter. In other embodiments, the circuit element can be a tunable filter circuit whose impedance can be dynamically changed.

Abstract: A reconfigurable monopole antenna is described which includes a radiator element coupled to a feed point through at least two different current paths. The current paths are of different lengths to accommodate different frequency bands. To change the current paths, a feed-point switch is positioned at the antenna feed point for selectively supplying current along either a first current path or a second current path. The current paths share a majority of the radiator element so that separate radiator elements need not be used.

Abstract: An optical disc drive (ODD) includes a radio-frequency identification (RFID) reader. The reader includes a circuit and a coil antenna which has a rotational symmetry with respect to a rotation axis of a motor, shaft and turntable of the ODD. The coil antenna can be secured to a wall of a housing of the ODD or around the motor and/or shaft. The reader can read an RFID tag on an optical disc. The RFID tag includes a circuit and a coil antenna which has a rotational symmetry with respect to the disc. As a result, the RFID tag can be read while the disc is rotating. A magnetic insulating material such as a ferrite polymer composite film is used to magnetically insulate the coil antenna. An authentication code can be read from the RFID tag to control access to content of the optical disc.

Abstract: Antennas, antenna systems, and electronic devices containing antennas are described herein. Non-antenna components of electronic devices can be used as an antenna, as a portion of an antenna, or as part of a feed path from a transceiver output to an antenna. An output of a transceiver can be coupled to a conductive portion of a non-antenna component through a feed point. Conductive portions of the non-antenna component can serve as an antenna for the transceiver. An additional conductor can also be coupled to the output of the transceiver. The additional conductor, the conductive portions of the non-antenna component, or the combination of the additional conductor and the conductive portions of the non-antenna component can act as an antenna for the transceiver.

Abstract: Antennas, antenna systems, and components used in antenna systems are provided herein. In various examples, an integrated antenna for receiving signals for a plurality of functional modules in a computing device may include a first plurality of antenna elements for receiving signals at wireless communication frequencies and a second plurality of antenna elements for receiving signals at wireless charging frequencies. The first and the second pluralities of antenna elements may have at least one common antenna element, which may be coupled to one or more of the second plurality of antenna elements using at least one low-pass filter. The at least one common antenna element is de-coupled from one or more of the plurality of functional modules operating at the wireless communication frequencies using at least one high-pass filter.

Abstract: Planar antennas comprise capacitively coupled antenna patches. A first antenna patch configured to radiate in a first frequency band is coupled to a transmitter/receiver. The first antenna patch is situated to capacitively couple radiation in the first frequency band and a second frequency band to second and third antenna patches, respectively. The first and second antenna patches extend antenna bandwidth in the first frequency band, and the third antenna patch is bent so that the antenna patches can be situated in a predetermined substrate area.

Abstract: Mobile communication devices include multi-band antennas that use an internal conductor and a perimeter conductor to define antenna sections that are coupled together based on an RF wavelength of interest. The antenna sections can be selected or deselected by shunting to ground using a passive filter device or an active RF switch. In other examples, filters or switches are configured to couple an internal conductor and a portion of a perimeter conductor together to provide an effective antenna length associated with a selected frequency.

Abstract: An optical disc drive (ODD) includes a radio-frequency identification (RFID) reader. The reader includes a circuit and a coil antenna which has a rotational symmetry with respect to a rotation axis of a motor, shaft and turntable of the ODD. The coil antenna can be secured to a wall of a housing of the ODD or around the motor and/or shaft. The reader can read an RFID tag on an optical disc. The RFID tag includes a circuit and a coil antenna which has a rotational symmetry with respect to the disc. As a result, the RFID tag can be read while the disc is rotating. A magnetic insulating material such as a ferrite polymer composite film is used to magnetically insulate the coil antenna. An authentication code can be read from the RFID tag to control access to content of the optical disc.

Abstract: A dual band printed antenna pair operates simultaneously at both WLAN frequency bands (2.4 GHz/5 GHz). The antenna pair provides high isolation between both antennas while having an efficient over the air performance. The antenna pair achieve greater than 20 dB isolation at 2.4 GHz and 5 GHz band, while having antennas positioned in close proximity. The high isolation is accomplished using an orthogonal antenna configuration (exploiting orthogonal polarization) and a parasitic element to further enhance isolation at 2.4 GHz. The antenna pair and parasitic element are printed on a Printed Circuit Board (PCB) adding relatively little cost to the Radio Frequency (RF) interface. The PCB is then fixed on top of a metal chassis with the antenna keep out area overhanging a corner of the metal chassis to enhance performance.

Abstract: A multiband monopole antenna for a mobile device is disclosed that can be dynamically switched between a quarter-wave monopole antenna and a half-wave folded monopole antenna. In one embodiment, a radiator element can be built into at least part of a decorative trim on an outer casing of the mobile device. A circuit element embedded into the radiator element can electrically connect or disconnect a radiator element tip from a grounded portion of the decorative trim. In some embodiments, the circuit element can be a switch or a passive filter element, such as an inductor/capacitive-based filter. In other embodiments, the circuit element can be a tunable filter circuit whose impedance can be dynamically changed.