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1. 发明授权

US10880903B1 Multi-mode dynamic frequency selection system 有权
公开(公告)号：US10880903B1
公开(公告)日：2020-12-29
申请号：US16250315
申请日：2019-01-17
申请人： Amazon Technologies, Inc.
发明人： Kun Ting Tsai , Kiran Kumar Edara , Sarang Wagholikar , Omar Fawazhashim Zakaria , Ashish Kumar Shukla , Cheol Su Kim
IPC分类号： H04L5/00 , H04B7/0404 , H04W84/18 , H04W88/08 , H04W72/08 , H04L12/24 , H04L29/08
CPC分类号： H04W72/085 , H04L5/0062 , H04L41/12 , H04L67/10 , H04B7/0404 , H04W84/18 , H04W88/08
摘要： A method includes determining, by a cloud computing system, a number of radar events detected by wireless access point (WAP) devices of a wireless mesh network and by channels associated with respective ones of the WAP devices. The method includes determining a first WAP device has detected a fewest number of radar events and that a first DFS channel, of the first WAP device, has detected a fewest number of radar events as compared with a number of radar events detected via each of the other DFS channels of the first WAP device. The method includes assigning the first WAP device to be a master on the first DFS channel and transmitting, to the first WAP device, a message containing first assignment information regarding the first WAP device being assigned as the master on the first DFS channel.

2. 发明授权

US10616904B1 Intelligently-switched, concurrently-operated omnidirectional and directional antennas 有权
公开(公告)号：US10616904B1
公开(公告)日：2020-04-07
申请号：US15877038
申请日：2018-01-22
申请人： Amazon Technologies, Inc.
发明人： Ali Mirkamali , Tzung-I Lee , Omar Fawazhashim Zakaria , Kalyan Teja Posani , In Chul Hyun , Cheol Su Kim
IPC分类号： H04W72/08 , H04W16/28 , H04W72/04 , H01Q1/24 , H01Q1/52 , H01Q21/06 , H01Q1/38
CPC分类号： H04W72/085 , H01Q1/246 , H01Q1/523 , H01Q21/062 , H04W16/28 , H01Q1/38 , H04W72/046 , H04W72/0453
摘要： A device includes first and second directional antennas, an omnidirectional antenna, and a switch selectively coupled between the first directional and omnidirectional antennas. A first radio includes first RF circuitry. A switch selectively couples the first omnidirectional antenna or the first directional antenna to the first radio. A second radio is coupled to the second directional antenna and includes second RF circuitry. An application processor receives, from first RF circuitry, a first radio frequency performance indicator (RFPI) value for signals received over the omnidirectional antenna, a second RFPI value for signals received over the first directional antenna, and, from the second RF circuitry, a third RPI value for signals received over the second directional antenna. The application processor determines a best RFPI value, selects an antenna corresponding to the best RFPI value, and selects a radio corresponding to the selected antenna.

3. 发明授权

US10581155B1 Active interference cancellation 有权
公开(公告)号：US10581155B1
公开(公告)日：2020-03-03
申请号：US16144743
申请日：2018-09-27
申请人： Amazon Technologies, Inc.
发明人： Adrian Gradinaru , Morris Yuanhsiang Hsu , Cheol Su Kim , Jaiyoung Park
IPC分类号： H04B1/38 , H01Q1/52 , H04B1/40 , H04B1/00
摘要： 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, a fixed-delay filter, and an interference compensation circuit part of an electrical path between the two RF couplers. The AIC algorithm is operable to control the interference compensation circuit to adjust a phase, an amplitude or both of a copy of a first RF signal transmitted on a first antenna to remove corresponding interference in a second RF signal received at a second antenna that is caused by the first RF signal. The processing device triggers a re-calibration in the AIC algorithm when the digital values, received from a power detector circuit, indicate a change in impedance that exceeds a threshold.

4. 发明授权

US09153869B1 Harmonic suppressed dual feed antenna 有权
标题翻译：谐波抑制双馈天线
公开(公告)号：US09153869B1
公开(公告)日：2015-10-06
申请号：US13718628
申请日：2012-12-18
申请人： Amazon Technologies, Inc.
发明人： Tzung-I Lee , In Chul Hyun , Cheol Su Kim
IPC分类号： H01Q21/00 , H01Q9/04 , H01Q21/30
CPC分类号： H01Q9/0414 , H01Q1/521 , H01Q5/378 , H01Q9/42 , H01Q21/28 , H01Q21/30
摘要： A wideband antenna apparatus including a harmonically suppressed low band antenna is provided. The low band antenna is configured as a folded monopole antenna with patch coupling for resonance in a first frequency band. A patch portion of the low band antenna is widely separated from a folded feed portion of the low band antenna to avoid slot resonances above the first frequency band. The patch portion is relatively large to avoid folding of the patch portion that could introduce resonances above the first frequency band. The wideband antenna apparatus may also include a high band antenna proximate with the low band antenna. The high band antenna may be a folded monopole patch coupled antenna configured for resonating in a second frequency band. The high band antenna may optionally be configured like the low band antenna to suppress resonances of the high band antenna above the second frequency band.
摘要翻译：提供了包括谐波抑制的低频带天线的宽带天线装置。低频天线被配置为具有用于在第一频带中谐振的贴片耦合的折叠单极天线。低频带天线的贴片部分与低频带天线的折叠馈电部分广泛分开，以避免在第一频带之上的时隙谐振。贴片部分相对较大以避免可能引入高于第一频带的谐振的贴片部分的折叠。宽带天线装置还可以包括靠近低频带天线的高频带天线。高频带天线可以是被配置为在第二频带中谐振的折叠单极贴片耦合天线。高带天线可以可选地被配置为类似于低频带天线，以抑制高频带天线高于第二频带的谐振。

5. 发明授权

US09130279B1 Multi-feed antenna with independent tuning capability 有权
标题翻译：具有独立调谐功能的多馈天线
公开(公告)号：US09130279B1
公开(公告)日：2015-09-08
申请号：US13789455
申请日：2013-03-07
申请人： AMAZON TECHNOLOGIES, INC.
发明人： Tzung-I Lee , In Chul Hyun , Cheol Su Kim , Jerry Weiming Kuo
IPC分类号： H01Q1/24 , H01Q21/28 , H01Q1/50
CPC分类号： H01Q21/28 , H01Q1/243 , H01Q1/36 , H01Q1/50 , H01Q5/335 , H01Q7/00 , H01Q9/42
摘要： 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.
摘要翻译：对电子设备的多馈电天线的天线结构及其操作方法进行说明。多馈天线包括耦合到耦合到第一射频（RF）馈电的第一调谐器电路的第一天线元件和耦合到耦合到第二RF馈送的第二调谐器电路的第二天线元件。第一调谐器电路是可编程的以独立地调整第一天线元件的第一阻抗，并且第二调谐器电路可编程以独立地调整第二天线元件的第二阻抗。

6. 发明授权

US11658634B1 Radio frequency port impedance detection using concurrent radios 有权
公开(公告)号：US11658634B1
公开(公告)日：2023-05-23
申请号：US17400333
申请日：2021-08-12
申请人： Amazon Technologies, Inc.
发明人： Nathan Labadie , Kun Ting Tsai , Cheol Su Kim , Kalyan Teja Posani , Omar Fawazhashim Zakaria
IPC分类号： H04B17/318 , H04W4/80 , H03H7/40 , H04W52/02 , H04W76/27 , H04B1/18
CPC分类号： H03H7/40 , H04B1/18 , H04B17/318 , H04W52/0245 , H04W76/27
摘要： Technologies directed to a wireless device with RF port impedance detection using concurrent radios are described. One wireless device includes an impedance detection circuit with a bi-directional RF coupler and switching circuitry. A processing device at least two radios, at least two RF ports, and an impedance detection circuit. The impedance detection circuit is configured to measure a first receive signal strength indicator (RSSI) value of a first reflected signal. The first reflected signal corresponding to a first signal sent by one of the at least two radios. The impedance detection circuit determines that the first RSSI value exceeds a threshold. The threshold represents an impedance mismatch condition at or beyond at least one of the two RF ports. The processing device sends a first indicative of the impedance mismatch condition to a second device.

7. 发明授权

US11546015B1 Cable loss compensation system for time domain duplexed (TDD) radios using embedded radio frequency (RF) control 有权
公开(公告)号：US11546015B1
公开(公告)日：2023-01-03
申请号：US17322408
申请日：2021-05-17
申请人： Amazon Technologies, Inc.
发明人： Nathan Labadie , Cheol Su Kim , Ravi Ichapurapu , Kalyan Teja Posani , Omar Fawazhashim Zakaria , In Chui Hyun
IPC分类号： H04B3/02 , H03F3/24 , H04B1/04 , H04B3/54 , H03M1/12 , H04B1/44
摘要： Technologies directed to cable-loss compensation are described. An apparatus includes a triplexer, a front-end module (FEM) circuit, and a control circuit. The triplexer is coupled to a radio frequency (RF) cable. The triplexer receives a first RF signal and a DC power signal from a device via the RF cable and sends a detection signal being indicative of a transmit power level of the first RF signal to the device via the RF cable. The transmit power level includes an insertion loss of the RF cable. The FEM circuit is coupled to the triplexer and includes a power amplifier (PA). The control circuit is coupled to the triplexer and measures the transmit power level of the first RF signal and converts the first RF signal into the detection signal. The control circuit sends the detection signal back to the device via the RF cable and enables the PA.

8. 发明授权

US11375561B2 Multi-functional, software configurable device for fixed wireless networks 有权
公开(公告)号：US11375561B2
公开(公告)日：2022-06-28
申请号：US16707354
申请日：2019-12-09
申请人： Amazon Technologies, Inc.
发明人： Nathan Labadie , Reshma Suresh , Ali Mirkamali , Cheol Su Kim , Omar Fawazhashim Zakaria , Kwok Shing Lee , Kalyan Teja Posani
IPC分类号： H04W4/00 , H04W76/15 , H01Q1/22 , H04B7/0413 , H04W84/10 , H04W88/16
摘要： 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 establishes a first wireless link between the first radio and a radio of a second device via the first antenna and a second wireless link between the second radio and a radio of a third device via the second antenna. The second device can be a second wireless network device that is programmed to operate as a gateway, the gateway being mounted outside of the building. The third device is located inside the building can be either a customer premises equipment (CPE) station or a wireless endpoint device. Each of the wireless network device, the second wireless network device, and the CPE station include identical hardware.

9. 发明申请

US20210176648A1 SCALABLE NETWORK ARCHITECTURE 有权
公开(公告)号：US20210176648A1
公开(公告)日：2021-06-10
申请号：US16707372
申请日：2019-12-09
申请人： Amazon Technologies, Inc.
发明人： Nathan Labadie , Tzung-I Lee , Omar Fawazhashim Zakaria , Subram Narasimhan , Cheol Su Kim
IPC分类号： H04W16/20 , H04L12/44
摘要： Technologies directed to a wireless network with a cascaded star topology with multiple devices at multiples nodes are described. In one wireless network, multiple devices are manufactured as a common device type and deployed at different nodes of the wireless network. The devices are configured to operate as a base station (BS) role, a gateway (GW) role, a relay (RL) role, or a customer station (STA) role. The nodes can be a base station node (BSN), a relay node (RLN), or a customer premises equipment (CPE) node. One node can be a first-tier hub of the cascaded star topology and another node can be a second-tier hub of the cascaded star topology.

10. 发明授权

US10862518B1 Radio frequency decibel scaled wireless interference detector 有权
公开(公告)号：US10862518B1
公开(公告)日：2020-12-08
申请号：US16706583
申请日：2019-12-06
申请人： Amazon Technologies, Inc.
发明人： Nathan Labadie , Kun Ting Tsai , Cheol Su Kim , Kwok Shing Lee , Haritha Tamvada
IPC分类号： H04B1/10 , H04B1/18
摘要： Technologies directed to a wireless device with a Radio Frequency (RF) Decibel-Scaled Wireless Interference Detector that provides accurate energy readings of a channel through decibel-scaled output voltage are described. One method of the wireless device includes receiving a first RF signal via an antenna and converting the first RF signal to a multiple samples using a sampling rate, each sample including a digital value of a decibel-scaled output voltage. The method converts each of the samples to an energy value using a voltage-to-energy lookup table and determines a congestion level of a channel using the energy values.

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