公开(公告)号：US09680512B2

公开(公告)日：2017-06-13

申请号：US13940238

申请日：2013-07-11

Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.

Inventor： Jun Chen ,  Song He

IPC: H04B7/02 ,  H04L1/02 ,  H04B1/12 ,  H04J11/00 ,  H04J13/00 ,  H04W4/00 ,  H04B7/10 ,  H04B1/7093

CPC classification number: H04B1/12 ,  H04B1/7093 ,  H04B7/10 ,  H04J11/00 ,  H04J11/0023 ,  H04J13/004 ,  H04W4/80

Abstract: A message retrieving system and method for signal collision mitigation and the method thereof are disclosed. The message retrieving system transmits two orthogonal signals over two isolated antenna during a time period that it expects to receive the response. Two virtual channels are artificially created and the collision of response signals originated from the respondents is mitigated.

公开(公告)号：US09287624B2

公开(公告)日：2016-03-15

申请号：US14059444

申请日：2013-10-21

Applicant: Hong Kong Applied Science and Technology Research Institute Co. Ltd.

Inventor： Tak Ki Wan ,  Yan Liu ,  Song He ,  Dan Yang ,  Chi Keung Angus Mak

IPC: G06K7/10 ,  H03H7/46 ,  H01P5/18 ,  H01Q7/00 ,  H03H7/40 ,  H01Q1/22

CPC classification number: H01Q7/005 ,  H01Q1/2216 ,  H03H7/40

Abstract: An antenna circuit is having an impedance circuit which can cancel signal leakage from the input port into the isolation port of a directional coupler. The antenna circuit further comprises a second impedance circuit for optimizing power transfer from the input port to the output port of the directional coupler. Furthermore, the antenna is tunable in order to maximize the reception strength of the antenna. The antenna circuit provides at once the possibility of tuning the antenna strength, optimizing the power transmission and reducing signal jamming by cancelling signal leakage. The antenna finds use as an effective and miniature RFID antenna.

Abstract translation: 天线电路具有可以消除从输入端口到定向耦合器的隔离端口的信号泄漏的阻抗电路。 天线电路还包括用于优化从定向耦合器的输入端口到输出端口的功率传输的第二阻抗电路。 此外，天线是可调谐的，以便最大化天线的接收强度。 天线电路立即提供调谐天线强度的可能性，通过消除信号泄漏来优化功率传输和减少信号干扰。 天线用作有效和微型RFID天线。