Abstract:
Antenna structures and methods of operating the same are described. An antenna structure may include an antenna carrier, a first antenna disposed on the first antenna carrier and coupled to a first radio frequency (RF) feed, a second antenna disposed on the first antenna carrier and coupled to a second RF feed, a third antenna disposed on the first antenna carrier and coupled to a third RF feed, and a fourth antenna disposed on the first antenna carrier and coupled to a fourth RF feed. The first antenna and the second antenna may be located along a first axis of the antenna carrier that passes through a center of the antenna carrier. The third antenna and the fourth antenna may be located along a second axis of the antenna carrier that passes through a center of the antenna carrier.
Abstract:
This disclosure describes a power unmanned aerial vehicle (UAV) that may generate a current from a conductor of an overhead power line carrying an AC power signal. The power UAV has a receptor that includes a secondary coil. Current is generated by the secondary coil of the receptor from magnetic fields emanating from the overhead power lines while the power UAV is flying. The generated current may be used to fly the power UAV, recharge an energy storage device of the power UAV, or be provided to another UAV. In various implementations, while the power UAV is flying, the power UAV may receive another UAV, recharge the other UAV, and then release the UAV to resume flying. In various implementations, the power UAV may also monitor characteristics of the power delivery system.
Abstract:
An antenna structure with a radio frequency (RF) circuit, an antenna carrier, and conductive material disposed on the antenna carrier and coupled to the RF circuit slot is described. The conductive material can radiate or receive first electromagnetic energy as a loop antenna in a first frequency band in a second order mode. The conductive material can include a first slot between portions of the conductive material and a second slot between other portions of the conductive material. The first slot or the second slot can radiate or receive second electromagnetic energy as a slot antenna at a second frequency band in a first order mode. The second frequency band can be higher than the first frequency band.
Abstract:
A unified proximity sensor including multiple physically separated radio antenna structure for mobile electronic devices that senses proximity of a person to the antennae. Changes in capacitances of the antennae are detected based on a low frequency signal output by a single capacitance sensor. As a human body approaches any of the antennae, this capacitance increases. Based on the increase in capacitance, the transmission powers of radio signals emitted by the antennae are reduced.
Abstract:
Antenna structures and methods of operating the same are described. One antenna structure includes a ground plane, a feed point, an antenna element, and a parasitic element. The feed point can be coupled to the antenna element and can receive a signal to cause the antenna structure to radiate electromagnetic energy. The antenna element includes: a first portion that extends in a first direction from the feeding point at the RF feed; a second portion that extends from a distal end of the first portion; a third portion that extends from a side of the second portion; a fourth portion that extends from the third portion; and a fifth portion that extends from the fourth portion. The parasitic element includes: a sixth portion that extends from the fourth portion; and the seventh portion that extends from the sixth portion to the ground plane.
Abstract:
Dual-band antenna structures and methods of operating the same of an electronic device are described. One apparatus includes a radio frequency (RF) feed and a dual-band antenna structure coupled to the RF feed at a feeding point and coupled to a ground plane at a grounding point. The structure includes a first loop antenna and a second loop antenna, both coupled to the feeding point and the grounding point. The first loop antenna radiates electromagnetic energy in a first resonant mode in a first frequency band and the second loop antenna radiates electromagnetic energy in a second resonant mode in a second frequency band and radiates electromagnetic energy in a third resonant mode in the first frequency band. Surface currents create three or more hot spots of magnetic field.
Abstract:
Systems and methods for addressing an inadvertent decrease in transmission energy/power due to triggering a proximity sensor by a cover disposed on a computing device. In an embodiment, a cover sensor may be incorporated into the device. The cover sensor may be used to detect the presence of a cover on the device, as well as whether the cover is in an open or closed position. The output of the cover sensor may then be used to adjust a trigger/proximity threshold of the proximity sensor to account for the presence and position of the cover on the device. In this manner the device may avoid unnecessary power backoff caused by proximity of the cover, rather than proximity of the user. This improves the over the air (OTA) performance of the device, as well as the user experience.
Abstract:
An antenna to communicate at a defined frequency; a feed point; and a near-field coupler array coupled to the feed point is described. The near-field coupler array may include a substrate; a ground plane on a first side of the substrate; and a near-field coupler array disposed on a second side of the substrate. The ground plane may include a first aperture and a second aperture. The near-field coupler array can include a first coupler element aligned with the first aperture and a second coupler element aligned with the second aperture. A first width of the first coupler element can be larger than a second width of the first aperture. A third width of the second coupler element can be larger than a fourth width of the second aperture. The first width and the third width can have a correlation to the defined frequency.
Abstract:
Antenna structures and methods of operating the same of a dual-loop-slot antenna of an electronic device are described. One dual-loop-slot antenna includes a first loop antenna coupled to a radio frequency (RF) feed and a ground plane, a second loop coupled to the RF feed and the ground plane. At least a portion of the second loop antenna is formed by the first loop antenna. The dual-loop-slot antenna also includes a slot antenna formed at least in part by a portion of at least one of the first loop antenna or the second loop antenna.
Abstract:
Antenna structures and methods of operating the same are described. One apparatus includes a radio frequency (RF) circuitry, a housing, an antenna structure, and multi-connector switching circuitry. The RF circuitry includes a first RF feed for a first frequency and a second RF feed for a second frequency. The housing includes a first strip element disposed at a periphery of the housing, where the first strip element is physically separated from the housing by a first cutout in the housing. The antenna structure includes the first strip element coupled to a first multi-connector switching circuitry by a first connector and a second connector. The first multi-connector switching circuitry coupled to the first RF feed and the second RF feed where the first switching circuit to connect the first strip element to the first RF feed in a first mode of the first multi-connector switching circuitry.