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公开(公告)号：US09641205B1
公开(公告)日：2017-05-02
申请号：US14848215
申请日：2015-09-08
Applicant: Amazon Technologies, Inc.
Inventor： In Chul Hyun , Sembhayya Gollakota , Morris Hsu , Cheol Su Kim
CPC classification number: H04B1/0475 , H04B1/406 , H04B1/525 , H04W84/12 , H04W88/06
Abstract: Antenna structures and methods of operating the same are described. One apparatus includes a processing device that executes an active interference cancellation (AIC) algorithm and radio frequency front-end (RFFE) circuitry coupled to the processing device. The RFFE circuitry includes two RF couplers, and a programmable-delay filter and a vector modulator disposed along electrical path. The AIC algorithm is operable to control the programmable-delay filter to match a delay of the electrical path to a propagation delay in an antenna path. The AIC algorithm is operable to control the vector modulator to adjust a phase, an amplitude or both of a copy of a first RF signal transmitted via the first antenna to generate a second RF signal. The second RF signal is added to a third RF signal via the second RF coupler to remove from the third RF signal interference caused by the first RF signal.
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公开(公告)号：US12035396B2
公开(公告)日：2024-07-09
申请号：US17736952
申请日：2022-05-04
Applicant: Amazon Technologies, Inc.
Inventor： Nathan Labadie , Reshma Suresh , Ali Mirkamali , Cheol Su Kim , Omar Fawazhashim Zakaria , Kwok Shing Lee , Kalyan Teja Posani
CPC classification number: H04W76/15 , H01Q1/2291 , H04B7/0413 , H04W84/10 , H04W88/16
Abstract: Technologies directed to a wireless network device with a single hardware architecture that supports multiple devices roles through software configuration are described. One wireless network device includes a housing with an RF connector and a circuit board with a first radio coupled to an internal antenna and a second radio coupled to an external antenna via the RF connector. The second antenna is mounted on an exterior surface of the building and coupled to the RF connector via an RF cable. The wireless network device receives a command identifying a device role for the wireless network device and configures itself according to the device role using device setting.
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公开(公告)号：US11483844B1
公开(公告)日：2022-10-25
申请号：US16949901
申请日：2020-11-19
Applicant: Amazon Technologies, Inc.
Inventor： Kun Ting Tsai , Kiran Kumar Edara , Sarang Wagholikar , Omar Fawazhashim Zakaria , Ashish Kumar Shukla , Cheol Su Kim
Abstract: A wireless mesh network includes a first wireless access point (WAP) device designated as a primary device, where the first WAP device provides network connectivity to a plurality of client devices over a first dynamic frequency selection (DFS) channel. A second WAP device is designated as a secondary device to the first WAP device on the first DFS channel. In response to detection of a radar event by the first WAP device: the first WAP device transitions to being the secondary device on the first DFS channel; the second WAP device transitions to being the primary device on the first DFS channel; and the second WAP device performs a channel availability check (CAC) on a second DFS channel and communicates availability of the second DFS channel to the first WAP device.
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公开(公告)号：US11469804B1
公开(公告)日：2022-10-11
申请号：US17464613
申请日：2021-09-01
Applicant: Amazon Technologies, Inc.
Inventor： Kun Ting Tsai , Manvendra Sharma , Tzung-I Lee , Cheol Su Kim , Sarang Wagholikar , Omar Fawazhashim Zakaria , Nathan Labadie
IPC: H04B7/06 , H04B17/318
Abstract: Technologies directed to sectorized analog beam searching are described. One method includes a first wireless device receiving a first destination address of a second wireless device, a first angle value corresponding to a first direction, and a second angle value corresponding to a second direction. The first wireless device generates a first signal beam transmitted in the first direction and spanning a first geographic region and receives an RSSI value corresponding to the first signal beam. The first wireless generates a second signal beam transmitted in the second direction and spanning a second geographic region and receives a second RSSI value corresponding to the second signal beam. The first wireless device determines that the first RSSI value is greater than the second RSSI value. The first wireless device determines, using a third signal beam a third angle value corresponding to a third direction located within the first geographic region.
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公开(公告)号：US20220264681A1
公开(公告)日：2022-08-18
申请号：US17736952
申请日：2022-05-04
Applicant: Amazon Technologies, Inc.
Inventor： Nathan Labadie , Reshma Suresh , Ali Mirkamali , Cheol Su Kim , Omar Fawazhashim Zakaria , Kwok Shing Lee , Kalyan Teja Posani
IPC: H04W76/15 , H01Q1/22 , H04B7/0413
Abstract: Technologies directed to a wireless network device with a single hardware architecture that supports multiple devices roles through software configuration are described. One wireless network device includes a housing with an RF connector and a circuit board with a first radio coupled to an internal antenna and a second radio coupled to an external antenna via the RF connector. The second antenna is mounted on an exterior surface of the building and coupled to the RF connector via an RF cable. The wireless network device receives a command identifying a device role for the wireless network device and configures itself according to the device role using device setting.
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Patent Agency Ranking
公开(公告)号：US10075198B1
公开(公告)日：2018-09-11
申请号：US15085653
申请日：2016-03-30
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Tzung-I Lee , Varadarajan Gopalakrishnan , Cheol Su Kim , In Chul Hyun
IPC: H04B1/00 , H04B7/0413 , H04W84/12
CPC classification number: H04B1/0057 , H04B7/0413 , H04W84/12 , H04W88/06
Abstract: Radio frequency (RF) front-end circuitry and methods of operating the same are described. One apparatus includes multiple antennas and a RF front-end circuitry. The RF front-end circuitry includes a first diplexer, a second diplexer, a third diplexer, a fourth diplexer, and a switch. A first transceiver is coupled to a first antenna via the first diplexer and the second diplexer. The third receiver is coupled to the first antenna via the first diplexer. The second transceiver is selectively coupled to a second antenna via the third diplexer, the switch, and the fourth diplexer when the switch is set to the first mode in response to the control signal from a processing component. The first transceiver is selectively coupled to the second antenna via the switch and the third diplexer when the switch is set to the first mode in response to the control signal from the processing component.
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公开(公告)号：US09786994B1
公开(公告)日：2017-10-10
申请号：US14221136
申请日：2014-03-20
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Tzung-I Lee , Cheol Su Kim , In Chul Hyun
CPC classification number: H01Q21/0006 , H01Q1/243 , H01Q5/335 , H01Q5/342 , H01Q9/0421 , H01Q21/28 , H01Q25/04
Abstract: Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes a first radio frequency (RF) feed, a second RF feed and an antenna structure. The antenna structure includes a ground plane, a first antenna element coupled to the first RF feed, a second antenna element coupled to the second RF feed and coupled to the ground plane at a first grounding point located at a distal end of the second antenna element. The first antenna element operates as a first directly-fed element and the second antenna element operates as a first parasitic ground element when RF signals in a first frequency range are applied to the first RF feed. The second antenna element operates as a second directly-fed element when RF signals in a second frequency range are applied to the second RF feed, the second frequency range being higher than the first frequency range. The first antenna element is grounded by the RF short circuit when the RF signals in the second frequency range are applied to the second RF feed.
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公开(公告)号：US20170222666A1
公开(公告)日：2017-08-03
申请号：US15154314
申请日：2016-05-13
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： In Chul Hyun , Andrew David Price , Tzung-I Lee , Kwok Lee , Cheol Su Kim , Omar Fawazhashim Zakaria , Varadarajan Gopalakrishnan
CPC classification number: H04B1/0057 , H01Q1/243 , H01Q1/50 , H01Q5/30 , H01Q19/106 , H01Q19/185 , H01Q21/205 , H01Q21/24 , H01Q21/28 , H01Q21/29 , H04L67/06 , H04L67/104 , H04L67/1091 , H04L67/1097 , H04M1/026 , H04W40/02 , H04W84/12 , H04W84/18 , H04W84/22
Abstract: Network hardware devices organized in a Wireless mesh network (WMN) in which the network hardware devices cooperate in distribution of content files to client consumption devices in an environment of limited connectivity to broadband Internet infrastructure are described. One mesh network device includes a micro controller, RF radios, and antenna switching circuitry. The antenna switching circuitry, in response to the control signals from a micro controller, selectively couples individual ones of a first set of antennas to individual channels of the set of RF radios to communicate content data with client consumption devices and selectively couples individual ones of a second set of antennas to other individual channels of the set of RF radios to communicate content data with other mesh network devices in a WMN.
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公开(公告)号：US09711858B1
公开(公告)日：2017-07-18
申请号：US13781279
申请日：2013-02-28
Applicant: AMAZON TECHNOLOGIES, INC.
Inventor： Tzung-I Lee , In Chul Hyun , Cheol Su Kim
CPC classification number: H01Q9/06 , H01Q1/243 , H01Q1/36 , H01Q5/335 , H01Q5/378 , H01Q7/00 , H01Q9/42
Abstract: Antenna structures and methods of operating the same of a dual-feed antenna of an electronic device are described. A dual-feed antenna includes a first antenna element coupled to a controllable circuit that is coupled a first radio frequency (RF) feed, and a second antenna element coupled to a second RF feed. The controllable circuit is configured to electrically connect the first antenna element to the first RF feed in a first antenna configuration and to electrically connect the first antenna element to ground in a second antenna configuration. During the second antenna configuration, the second antenna element is driven by the second RF feed.
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公开(公告)号：US11949634B1
公开(公告)日：2024-04-02
申请号：US17706474
申请日：2022-03-28
Applicant: Amazon Technologies, Inc.
Inventor： Nathan Labadie , Divya Naveenan , In Chul Hyun , Cheol Su Kim
CPC classification number: H04L5/1461 , H03F1/3241 , H03G3/20 , H04L5/1438 , H04B2001/0416
Abstract: Technologies directed to a control circuit using dynamic signal compression are described. A control circuit includes a front-end module (FEM) coupled to an RF cable, the FEM having a low-noise amplifier (LNA). The control circuit further includes an automatic gain control (AGC) circuitry coupled to the FEM. The AGC circuitry receives a first radio frequency (RF) signal having a first portion of one or more symbols and a second portion of one or more symbols. The AGC circuitry further amplifies the first portion to generate a first portion of an output signal. The AGC circuitry further compresses the second portion to obtain a second portion of the output signal. The AGC circuitry further sends a control signal to cause the FEM to change a gain state value of the LNA from a first value to a second value based on a comparison between a voltage of the output signal and a reference voltage.
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