公开(公告)号：US11876293B1

公开(公告)日：2024-01-16

申请号：US17981290

申请日：2022-11-04

Applicant: Amazon Technologies, Inc.

Inventor： Tara Yousefi ,  Alireza Mahanfar ,  Peter James Hetzel

IPC: H01Q13/10 ,  H04B17/21 ,  H01Q5/357 ,  H04B17/11

CPC classification number: H01Q13/106 ,  H01Q5/357 ,  H04B17/11 ,  H04B17/21

Abstract: Technologies directed to a slot antenna as a calibration antenna for a phased array antenna are described. A communication system includes an antenna array with a first antenna module with a plurality of antenna elements and a conductive wall structure isolating each of the plurality of antenna elements. The conductive wall structure includes a portion separating a first antenna element and a second antenna element of the plurality of antenna elements. The portion includes a slot antenna.

公开(公告)号：US11804914B1

公开(公告)日：2023-10-31

申请号：US16868882

申请日：2020-05-07

Applicant: Amazon Technologies, Inc.

Inventor： Tara Yousefi ,  Alireza Mahanfar ,  Christopher Steven Merola

IPC: H04B17/12 ,  H04B17/21 ,  H01Q3/26 ,  H04B7/185

CPC classification number: H04B17/12 ,  H01Q3/26 ,  H04B17/21 ,  H04B7/1851

Abstract: Techniques are described for detecting whether a phased array antenna is to be calibrated. In an example, a controller communicatively coupled with the phased array antenna measures a characteristic of a probe signal. The probe signal is communicated between an antenna element of the phased array antenna and a probe antenna mounted to the phased array antenna. The probe antenna is over-resonant. The controller further determines a drift of the phased array antenna based at least in part on the characteristic. Based at least in part on the drift, the controller initiates a calibration of the phased array antenna.

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

IPC: H04B17/12 ,  H04B7/12

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：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

IPC: H04B1/00 ,  H01Q1/28 ,  H01Q3/36 ,  H01Q9/04 ,  H01Q13/02 ,  H04B1/16

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

IPC: H04B1/06 ,  H01Q3/36 ,  H01Q9/04 ,  H01Q1/28 ,  H04B1/16 ,  H01Q13/02

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：US11527833B1

公开(公告)日：2022-12-13

申请号：US16928270

申请日：2020-07-14

Applicant: Amazon Technologies, Inc.

Inventor： Tara Yousefi ,  Alireza Mahanfar ,  Peter James Hetzel

IPC: H01Q5/40 ,  H01Q13/10 ,  H01Q5/357 ,  H04B17/21 ,  H04B17/11

Abstract: Technologies directed to a slot antenna as a calibration antenna for a phased array antenna are described. The antenna structure includes a ground plane, a first antenna element, and a second antenna element. The first antenna element and the second antenna element are located in a first plane that is separated from the ground plane by a first distance. The second antenna element is separated from the first antenna element by a second distance. Conductive material is located in the first plane the first antenna element and the second antenna element. A portion of the conductive material adjacent to the first antenna element includes a slot antenna. A radio frequency feed point is located at the slot antenna. The conductive material electrically isolates the first antenna element and the second antenna element and radiates electromagnetic energy as a slot antenna.

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

IPC: H04B1/60 ,  H01Q3/26 ,  H04B17/13 ,  H01Q21/22 ,  H04B7/185 ,  H04B17/12

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：US11296409B1

公开(公告)日：2022-04-05

申请号：US16899375

申请日：2020-06-11

Applicant: Amazon Technologies, Inc.

Inventor： Tara Yousefi ,  Alireza Mahanfar ,  Murat Veysoglu

IPC: H01Q3/30 ,  H01Q1/48 ,  H01Q13/10 ,  H01Q9/04 ,  H01Q1/36

Abstract: Technologies directed to embedding a calibration antenna in an antenna structure of a phased array antenna are described. The antenna structure includes a ground plane, a first antenna element, and a second antenna element. The first antenna element and the second antenna element are located in a first plane. The second antenna element is separated from the first antenna element by a first distance. Dielectric material is located between the ground plane and the first plane. The antenna structure further includes a third antenna element that is located in a second plane. The second plane is located between the ground plane and the first plane. The third antenna element is located in an area with a first dimension and a second dimension that are each less than half of the first distance.