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公开(公告)号：US11310581B1
公开(公告)日：2022-04-19
申请号：US16819929
申请日：2020-03-16
Applicant: Amazon Technologies, Inc.
Inventor： Balamurugan Shanmugam , Tzung-I Lee
Abstract: Technologies directed to reducing wireless earbud form factor and cost without compromising antenna performance are described. One wireless earbud includes a metal element that is a hybrid radiating element, touch element, and electrostatic discharge (ESD) trap. The metal element can include a first section coupled to a first ESD element, a second section that can include a circular element, and a third section coupled to a second ESD element. The wireless earbud can include touch circuitry coupled to the metal element to detect a presence of a conductive object in proximity to the metal element. The wireless earbud can include a radio that is parasitically coupled to the metal element and configured to apply a radio frequency signal to parasitically induce a current on the metal element that causes the metal element to radiate electromagnetic energy as a parasitic monopole element.
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公开(公告)号：US11949628B1
公开(公告)日：2024-04-02
申请号：US17543201
申请日：2021-12-06
Applicant: Amazon Technologies, Inc.
Inventor： Cyril Arokiaraj Arool Emmanuel , Balamurugan Shanmugam
IPC: H04L5/00 , H04B17/327 , H04L27/26 , H04L27/34 , H04W72/542
CPC classification number: H04L5/0069 , H04B17/327 , H04L5/0007 , H04L5/0098 , H04L27/2602 , H04L27/3405 , H04W72/542
Abstract: Technologies to improve wireless communications by on-body products are described. One device includes millimeter wave (mmWave) frequency front-end circuitry and a baseband processor with an Orthogonal Frequency Division Multiplexing (OFDM) physical (PHY) layer. The baseband processor determines received signal strength indicator (RSSI) value and phase value associated with a wireless channel in a mmWave frequency range. The baseband processor determines a state of motion of the device using the RSSI value and the phase value. The baseband processor sends data to the second device using a first subcarrier structure of the OFDM PHY layer, in response to the state of motion being a first state of motion. The baseband processor sends data to the second device using a second subcarrier structure of the OFDM physical layer, in response to the state motion being a second state of motion having more motion than the first state of motion.
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公开(公告)号：US10764666B1
公开(公告)日：2020-09-01
申请号：US16102401
申请日：2018-08-13
Applicant: Amazon Technologies, Inc.
Inventor： Adrian Napoles , Balamurugan Shanmugam
Abstract: An electronic device that includes a metal element arranged to at least partially cover a high impedance region associated with an antenna of the electronic device. The metal element presents a capacitive load to the antenna to mimic or replicate a capacitance placed on the antenna by a conductive element, such as a user's finger, coming in contact or close proximity to the antenna area. The capacitive load applied by the metal element tunes the antenna system for a large capacitance to resist antenna de-tuning and radio link interruption caused by the unintended user contact or near contact with the high impedance region of the antenna.
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公开(公告)号：US10732764B1
公开(公告)日：2020-08-04
申请号：US16122118
申请日：2018-09-05
Applicant: Amazon Technologies, Inc.
Inventor： Balamurugan Shanmugam , Sandeep Vuppu
Abstract: A device includes a substrate and a touch control interface including touch control electrodes laminated onto the substrate and a touch controller electrically connected to each touch control electrode. The touch controller is configured to detect a change in a capacitance of a first touch control electrode to determine that a user is touching the first touch control electrode. The device may include a high-pass filter connected to the first touch control electrode and an impedance matching network electrically connected to the high-pass filter. The device includes a radio controller connected to the impedance matching network. The radio controller is configured to use the first touch control electrode as a first antenna to transmit and receive wireless signals. The optional impedance matching network may be configured to match an input impedance of the first touch control electrode to an output impedance of the radio controller.
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