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http://dx.doi.org/10.5515/KJKIEES.2009.20.11.1186

Implementation of Compressive Receiver with Chirp LO Based on DDS for RFID Signal Detection  

Jo, Won-Sang (Victeck Co. Ltd., R&D Center)
Park, Dong-Chul (Department of Radio Science & Engineering, Chungnam National University)
Publication Information
Abstract
In this paper, we propose DDS(Direct Digital Synthesizer) as a new implementation method of chirp LO(Local Oscillator) for compressive receiver applied for RFID signal detection in UHF band. We designed a receiver whose input frequency range is 908.5~914 MHz, DDL(Dispersive Delay Line) bandwidth is 6 MHz, and dispersion delay time is $13\;{\mu}s$. Chirp LO based on DDS is designed to meet $26\;{\mu}s$ sweep time and 12 MHz bandwidth for complete compressive mechanism. The measured 3 dB pulse width of the compressed signal of the fabricated receiver is 260 ns and the frequency resolution for simultaneous input signals is below 200 kHz. These performances indicate that the proposed chirp LO based on DDS and the compressive receiver is suitable for RFID signal detection in UHF band.
Keywords
Compressive Receiver; Chirp LO; DDS; DDL; Signal Detection; RFID;
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Times Cited By KSCI : 2  (Citation Analysis)
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