Patent · US Active

Radio frequency identification reader and a method for locating a tag by the radio frequency identification reader

US9195862B2 · kind B2 · utility

2Cited by

2References

21Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Dieter Horst · Cadolzburg, DE
Dan Yu · Shakopee, US
Yong Yuan · Weihai, CN

Key dates

Filing date	Jan 14, 2011
Grant date	Nov 24, 2015
Priority date	—
Expiry date	Nov 29, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG01S13/75
WIPO fieldMeasurement
WIPO sectorInstruments

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.