Amazon Technologies, Inc.

Advanced Micro Devices Corporation

Zarlink Semiconductor Limited

Jerry Weiming Kuo

Ming Zheng

Adrian Napoles

Mudit Sunilkumar Khasgiwala

Ching Yu

Jeffrey Roy Dwork

Khaled Ahmad Obeidat

Rajat Roy

Jay William Kruse

Omar Sze Leung

John Mingyung Chiang

Isaac Scott Noble

In Chul Hyun

Tzung-I Lee

Cheol Su Kim

Alok Singh

Anuj Dron

Din-I Tsai

Michael Devyver

Joseph Christopher Modro

Ulf Jan Ove Mattsson

Jeongsoo Kim

David Wu

Andy P Annadurai

Willy Horng Jean Cheung

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.

Single feed passive antenna for a metal back cover

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 with a first connector, a second connector, and a third connector coupled to the multi-connector switching circuitry. The multi-connector switching circuitry connects the first RF feed 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.

The present disclosure can provide a wideband antenna with a folded monopole structure that operates at GPS frequencies and high band (HB) frequencies. Accordingly, the wideband antenna can function as an integrated GPS and HB Diversity antenna for a computing device. In some embodiments, due to various constraints, the antenna can be designed to have a curved structure to fit within a corner of the computing device. The folded monopole antenna can comprise two substantially parallel conducting arms, which improves antenna performance. In some embodiments, the present disclosure can provide GPS and high band impedance matching for a signal received from the antenna in order to improve/ensure signal quality. The signal can be decoupled into a GPS signal portion and a high band signal portion for additional processing and/or information retrieval.

Antenna for GPS and high band

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.

Low specific absorption rate (SAR) dual-band antenna structure

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.

Proximity sensor arrangement for wireless devices

An apparatus includes a first reactive component coupled between a first antenna and a second antenna in a multi-band antenna system. The apparatus further includes a first operation circuit coupled to the first reactive component. The first reactive component and the first operation circuit together form a signal path to enable signal flow between the first and the second antennas when the first and the second antennas are operating at a first frequency. The first operation circuit disables signal flow along the signal path when the first and the second antennas are operating at a second frequency.

Antenna isolation in a multi-band antenna system

Devices and apparatuses are described. An apparatus may include radio frequency (RF) circuitry including a RF feed and a modem to transmit one or more signals via the RF feed. The apparatus may include an antenna structure including a first element and a second element. The apparatus may include an application processor coupled to the first element and the second element, where the application processor includes proximity sensing circuitry. The proximity sensing circuitry can measure a first capacitance value and a second capacitance value and the application processor can transmit a first signal of the one or more signals via the first element. The modem can determine whether an object is proximate to the first element and select the second element when the object is determined to be proximate to the second element.

Antenna switching for transmission diversity

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 a pair of hot spots of magnetic field.

Low specific absorption rate dual-band antenna structure

Methods and systems for radiating electromagnetic energy with a patch antenna structure are described. A device may include a radio frequency (RF) feed and an antenna structure coupled to the RF feed. The antenna structure may include a ground plane, first and second conductors, and first and second impedance matching components. The first conductor may include an inner surface defining and at least partially surrounding a slot. The first and second impedance matching components may be coupled between the RF feed and the ground plane.

Dual-band antenna with grounded patch and coupled feed

Antenna structures and methods of operating the same of a phase-controlled antenna of an electronic device are described. A phase-controlled antenna includes a radio frequency (RF) feed, an antenna structured coupled to the RF feed and including a ground path coupled to a ground node, and a phase-controlling circuit coupled between the ground path and the ground node. The antenna structure is configured to operate at a resonant frequency in a first state, and the phase-controlling circuit is configured to introduce a phase shift in the antenna structure to change the resonant frequency of the antenna structure to a second resonant frequency in a second state.

Phase-controlled antenna with independent tuning capability

Antenna structures and methods of operating the same are described. One apparatus includes a metal cover having a first corner ground element, a second corner ground element, a first strip element, a second strip element, a radio frequency (RF) feed, and a RF circuit. The first strip element is physically separated from the first corner ground element by a first cutout in the metal cover. The first strip element is physically separated from the second strip element by a second cutout in the metal cover. The second strip element is physically separated from the second corner ground element by a third cutout in the metal cover. The RF circuitry is coupled to the RF feed, where the RF circuitry is operable to cause the first corner ground element and the first strip element as well as the second corner ground element and the second strip element to radiate electromagnetic energy.

Antenna structures and methods of operating the same are described. One apparatus includes a metal cover having a first corner portion, a second corner portion, and an elongated portion. The elongated portion is physically separated from the first corner portion by a first cutout in the metal cover and the elongated portion is physically separated from the second corner portion by a second cutout in the metal cover. A radio frequency (RF) circuit is coupled to a feeding element that is coupled to the elongated portion. A capacitor is coupled between the feeding element and the first corner portion near the distal end of the feeding element. The RF circuit is operable to cause the feeding element, the elongated portion, and the first corner portion to radiate electromagnetic energy as a first radiator in a first frequency range with dual resonance.

Loop-feeding wireless area network (WAN) antenna for metal back cover

Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes a radio frequency (RF) including a surface-current dispersing circuit and an antenna structure coupled to the RF feed at a feeding point and coupled to a ground plane at a grounding point. The antenna structure comprises an even multiple of quarter-wavelength elements with a first element coupled to the feeding point and a second element coupled to the grounding point and the grounding point is located at a specified distance from the feeding point. Surface currents, generated as a result of the RF signals being applied to the RF feed at the feeding point, create a first hot spot of an even multiple of hot spots of magnetic field at the feeding point. The surface-current dispersing circuit and the ground point disperse a portion of the surface currents at the feeding point towards the grounding point to create other hot spots of the even multiple of hot spots. The even multiple of hot spots are areas of the antenna structure on which surface-current density is higher than other areas surrounding the areas of the even multiple of hot spots.

Low specific absorption rate (SAR) antenna structure

Various embodiments provide a dynamic antenna system that adapts, by adjusting various antenna circuit parameters, to accommodate a particular circumstance or set of conditions being imposed on the computing device at a given time. For example, signal strength of the antenna system can be monitored and, upon detecting a change in the signal strength, a condition associated with the change, such as the user holding the device with two hands, can be identified based on offline testing, measurement, and pattern recognition. Accordingly, the one or more parameters of the antenna system, which can include multiple antennas and other reconfigurable components, can be adjusted to optimize the antenna efficiency for the particular condition associated with the change in signal strength.

Dynamically reconfiguring antenna bandwidth based on user scenario

Antenna structures and methods of operating the same of a multi-feed antenna of an electronic device are described. A multi-feed antenna includes a first antenna element coupled to a first tuner circuit that is coupled a first radio frequency (RF) feed, and a second antenna element coupled to a second tuner circuit that is coupled to a second RF feed. The first tuner circuit is programmable to independently adjust a first impedance of the first antenna element and the second tuner circuit is programmable to independently adjust a second impedance of the second antenna element.

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San Jose, CA, United States of America

Jerry Weiming Kuo