Invention Grant
- Patent Title: Radio frequency identification reader and a method for locating a tag by the radio frequency identification reader
- Patent Title (中): 射频识别读取器和用于通过射频识别读取器定位标签的方法
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Application No.: US13979838Application Date: 2011-01-14
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Publication No.: US09195862B2Publication Date: 2015-11-24
- Inventor: Dieter Horst , Dan Yu , Yong Yuan
- Applicant: Dieter Horst , Dan Yu , Yong Yuan
- Applicant Address: DE Munich
- Assignee: Siemens Aktiengesellschaft
- Current Assignee: Siemens Aktiengesellschaft
- Current Assignee Address: DE Munich
- Agency: Cozen O'Connor
- International Application: PCT/CN2011/070279 WO 20110114
- International Announcement: WO2012/094825 WO 20120719
- Main IPC: H04Q5/22
- IPC: H04Q5/22 ; G06K7/00 ; G06K7/10 ; G01S13/84 ; G01S13/75
Abstract:
A radio frequency identifying reader (RFID) and a method for locating a tag by the RFID includes transmitting, by the RFID reader, signals to the tag on at least two frequencies and receiving a corresponding reflection signal, combining, by the RFID reader, received reflection signals and acquiring the combined signal which is received, and mapping the combined signal that is received to a constellation point in a constellation map to locate the tag such that the tag can be more easily located.
Public/Granted literature
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