公开(公告)号：US09698857B1

公开(公告)日：2017-07-04

申请号：US14632929

申请日：2015-02-26

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Tzung-I Lee ,  Koohyun Um ,  In Chul Hyun ,  Mercyma Deeba Balachandran

IPC: H04B7/00 ,  H04B1/401 ,  H04B7/0413 ,  H01Q5/00 ,  H04W88/06 ,  H04W84/12

CPC classification number: H04B1/401 ,  H01Q5/00 ,  H01Q7/00 ,  H01Q9/30 ,  H04B7/0413 ,  H04B7/0693 ,  H04W84/12 ,  H04W88/06

Abstract: Antenna structures and methods of operating the same of an electronic device are described. One apparatus includes an antenna element that is self-resonant at a first frequency in a first mode and self-resonant at a second frequency in a second mode. A radio frequency (RF) is coupled between the antenna element and a ground plane. A RF circuit, coupled to the antenna element via an RF feed, is operable to control the RF switch to switch the antenna element between the first mode and the second mode. The RF circuit is operable to cause the antenna element to radiate or receive electromagnetic energy in a first radiation pattern in the first mode and to radiate or electromagnetic energy in a second radiation pattern in the second mode.

公开(公告)号：US09728848B1

公开(公告)日：2017-08-08

申请号：US14667211

申请日：2015-03-24

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Rohit Sammeta ,  Peruvemba Ranganathan Sai Ananthanarayanan ,  Adrian Napoles ,  Anuj Dron ,  Mercyma Deeba Balachandran

IPC: H01Q11/02 ,  H04B1/04 ,  H04B7/00 ,  H01Q1/52 ,  H04B1/40

CPC classification number: H01Q1/521 ,  H01Q1/1257 ,  H01Q21/30 ,  H04B1/40

Abstract: Devices or apparatuses for changing settings of a neutralization line are described. A radio device may include a neutralization line coupled between a first antenna and a second antenna. The neutralization line has a variable component and the first and the second antennas are electromagnetically coupled and have a first coupling value. The neutralization line is controlled by a controller. The controller is coupled to the first antenna port, the second antenna port and the neutralization line. The controller detects an environmental condition that causes the first coupling value increase to a second coupling value. The controller also adjusts a value of the variable component to change a resistance value or, a reactance value, or both of the adaptive neutralization line to achieve a third coupling value that is lower than the second coupling value.

公开(公告)号：US09369187B1

公开(公告)日：2016-06-14

申请号：US14692686

申请日：2015-04-21

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Rohit Sammeta ,  Peruvemba Ranganathan Sai Ananthanarayanan ,  Adrian Napoles ,  Anuj Dron ,  Mercyma Deeba Balachandran

IPC: H04B15/00 ,  H04B7/04

CPC classification number: H04B7/0404 ,  H01Q1/521 ,  H04B1/40 ,  H04B7/0802 ,  H04B7/0874

Abstract: Technologies described herein are directed to switching between antennas in response to a change in an isolation value identified using a neutralization line. A device may include a first set of antennas including a first antenna, a second antenna, a neutralization line coupled between the first antenna and the second antenna, and a controller. The controller is coupled to the neutralization line. The controller determines a first isolation value between the first antenna and the second antenna using the neutralization line, determines a change in isolation value between the first antenna and the second antenna to a second isolation value, determines that the second isolation value exceeds a threshold, and switches from using the first set of antennas to using a second set of antennas.

Abstract translation: 本文描述的技术涉及响应于使用中和线识别的隔离值的变化而在天线之间切换。 设备可以包括第一组天线，包括第一天线，第二天线，耦合在第一天线和第二天线之间的中和线，以及控制器。 控制器耦合到中和线。 控制器使用中和线确定第一天线和第二天线之间的第一隔离值，将第一天线与第二天线之间的隔离值的变化确定为第二隔离值，确定第二隔离值超过阈值， 并且从使用第一组天线切换到使用第二组天线。