[射频]2-D Localization and Identification Based on

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, VOL. 51, NO. 5, MAY 2003 @x>2|`65Y  
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2-D Localization and Identification Based on 'cc4Y~0s  
SAW ID-Tags at 2.5 GHz hl~F1"q)  
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Thomas F. Bechteler and Hüsnü Yenigün B{i;+[ase  
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Abstract—An identification and localization system based on Uwil*Jh
 
surface acoustic wave (SAW) radio sensors is presented in this u\;dUnr  
paper. This system is able to identify and localize objects within D`ge3f8Wi  
a two-dimensional area. Identification is done with a fixed coded <Q~7a hF  
passive SAW identification-tag. Localization is done with three cr;`
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receiving antennas and with a following analysis of time delay rKO*A7vE  
between the sent interrogation signal and the received signals. gQt@xNO  
For practical tests, a special interrogator has been established, as l\y*wr`  
well as the receiving and demodulation unit. The whole system is c|a|z}(/J  
controlled by a computer. 'GoeVq  
Index Ter .. 31;T$5v1  
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