-
公开(公告)号：US11831356B1
公开(公告)日：2023-11-28
申请号：US17481086
申请日：2021-09-21
Applicant: Amazon Technologies, Inc.
Inventor： Iyappan Ramachandran , Farideddin Fayazbakhsh , Yu Ho , Tara Yousefi
CPC classification number: H04B7/12
Abstract: Technologies directed to calibration and measurement of transmit phased array antennas with digital beamforming are described. One method includes a communication device generating a radio frequency (RF) signal and a reference RF signal generated using a first offset value. A processing device sending to a measurement device data indicating a first periodicity of the first RF signal and a first data acquisition parameter. The processing device receives measurement data indicating conditions of the first RF signal and the reference RF signal received at the measurement device. The processing device determines signal characteristics of the first RF signal and the reference RF signal. The processing device sends a command to the communication device. The command indicates a modification of the first offset value to a second offset value. The communication device generates a second RF signal using the second offset value.
-
公开(公告)号：US11322838B1
公开(公告)日：2022-05-03
申请号：US16866239
申请日：2020-05-04
Applicant: Amazon Technologies, Inc.
Inventor： Iyappan Ramachandran , Simon Jacques Damphousse , Tara Yousefi , Billy Pingli Kao , Murat Veysoglu , Ming-Chun Paul Lee
Abstract: Technologies directed to calibrating phased array antennas are described. A processing device of a communication device causes a first radio to send a first signal via a first antenna element. The first signal has a set of tones. Each tone of the set of tones has a frequency within a fixed frequency range. The processing device causes a second radio to receive a second signal via a second antenna element. The second signal is a response to the first signal. The processing device determines that there is a difference between the second signal and a reference signal. The processing device adjusts at least one of a phase parameter value, a gain parameter value, or a time-delay parameter value of a radio frequency component based on the difference.
-
公开(公告)号：US12040555B1
公开(公告)日：2024-07-16
申请号：US17884868
申请日：2022-08-10
Applicant: Amazon Technologies, Inc.
Inventor： Tara Yousefi , Iyappan Ramachandran , Murat Veysoglu , Peter James Hetzel , Billy Pingli Kao , Alireza Mahanfar
CPC classification number: H01Q3/36 , H01Q1/288 , H01Q9/0407 , H01Q13/0275 , H04B1/1607
Abstract: Technologies directed to a directional calibration antenna for calibration of an array antenna of a communication system are described. The communication system includes the array antenna which includes a number of antenna elements. The number of antenna elements are located in an area on a first side of a support structure. A directional antenna is located at a first height above a plane of the array antenna and at a periphery of the area. The directional antenna is pointed towards the array antenna and is located within a near field of the array antenna.
-
公开(公告)号：US11462828B1
公开(公告)日：2022-10-04
申请号：US17097518
申请日：2020-11-13
Applicant: Amazon Technologies, Inc.
Inventor： Tara Yousefi , Iyappan Ramachandran , Murat Veysoglu , Peter James Hetzel , Billy Pingli Kao , Alireza Mahanfar
Abstract: Technologies directed to a directional calibration antenna for calibration of an array antenna of a communication system are described. The communication system includes the array antenna which includes a number of antenna elements. The number of antenna elements are located in an area on a first side of a support structure. A directional antenna is located at a first height above a plane of the array antenna and at a periphery of the area. The directional antenna is pointed towards the array antenna and is located within a near field of the array antenna.
-
-
-
Search Results
4
records
(took 0.012 seconds)
