Amazon Technologies, Inc.

Jay Praful Desai

Pratik Kalpesh Patel

Milos Jorgovanovic

Qinghai Gao

Morris Yuanhsiang Hsu

Ateet Kapur

Varadarajan Gopalakrishnan

Kenneth Paul Kiraly

Subram Narasimhan

Siva Rama Kumar Somayajula

Clifton Liu

Kiran Kumar Edara

Adrian Napoles

Ming Zheng

Andrew David Price

Jin Guo

Anuj Dron

Amit Shailesh Gaikwad

King Shaw

Felix Liu

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.

Antenna structure for concurrent channel communication

Techniques for harmonizing wireless communications performed by a computing device which communicates using varying wireless communication standards are described herein. For instance, a computing device may include multiple chipsets with associated antennas that are configured to perform wireless communications using separate wireless standards which operate at overlapping frequencies. To avoid performance degradation experienced in simultaneous use cases with communications operating at overlapping frequencies, the multiple chipsets may be configured with logic to determine which communications are prioritized when multiple chipsets attempt to communicate simultaneously. The multiple chipsets may be communicatively coupled to coordinate their communications by prioritizing certain types of communications over other types of communications to avoid simultaneous communications in overlapping frequencies. In this way, multiple chipsets that communicate using different standards at overlapping frequencies may avoid performance issues experienced in simultaneous use cases, while performing the communications which are of a highest priority level.

Packet arbitration in overlapping frequencies

Next packet protection for communications in overlapping frequencies

Modification of default priorities for communications in overlapping frequencies

An adaptive envelope tracking calibration module executes a routine to calibrate a radio frequency (RF) transmitter in a communication device comprising an envelope tracking system. The routine includes receiving a selection of a calibration target power that is greater than a desired output power of the RF transmitter and determining an output power estimate for the power amplifier as a supply voltage for the power amplifier varies according to an output of the envelope tracking system. The routine further includes adaptively adjusting the calibration target power when the output power estimate is not greater than the calibration target power.

Adaptive envelope tracking calibration for radio frequency communication systems

Techniques are described for dynamically tuning mobile device antennas. Input derived from multiple sources and representing a variety of scenarios is provided to the RF modem of a mobile device. The modem is configured to select antenna tuning settings based on this input, each of which tunes the antenna by modifying its impedance as appropriate for the corresponding scenario.

Techniques for dynamically tuning mobile device antennas

A user device determines a current subscriber identity module (SIM) profile, identifies a modem profile that corresponds to the current SIM profile, and updates a non-volatile memory of a modem with the identified modem profile.

Single version of a user device modem for use with different wireless carriers

A user device obtains a device profile corresponding to a primary wireless network at a current location of the user device, reprograms a modem of the user device using the device profile corresponding to the primary wireless network at the current location of the user device, and establishes a network connection using the device profile corresponding to the primary wireless network at the current location of the user device.

World SIM

Methods and systems for delaying a determination to adjust a first power transmit level when a presence of a human body part is detected proximate to a user device are described. A user device detects a presence of a human body part and, in response, determines whether to adjust the first transmit power level to a second transmit power level, and delays the determination by a specified amount of time that is programmable. The user device transmits the information using the second transmit power level when the presence of the human body part is detected.

Proximity based power throttling

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San Jose, CA, United States of America

Jay Praful Desai