SYSTEM DESIGN CONSIDERATIONS OF UNIVERSAL UHF RFID READER TRANSCEIVER ICS

This paper describes the architecture, system analysis and implementation of world-wide regulation compliant UHF RFID reader transceiver for ISO 18000-6 multi-class tags in the ISM band 860 MHz…960 MHz. The presented considerations based on system analysis providing evaluation of the transceiver’s building blocks parameters (Phase Noise, Noise Figure, Sensitivity, P1dB, Dynamic Range etc.) in accordance with required characteristics of complete RFID reader system, i.e. data transmission rate, read range, power consumption, and reading speed etc. Design considerations are introduced for a custom «system-in-package» transceiver, implemented in LTCC-module. Based on direct-conversion architecture, the reader transceiver integrates RF-blocks, frequency synthesizer, modulation and demodulation functions, low frequency analog baseband. The receiver sensitivity is down to - 85 dBm, the transmitter produces output power of +17 dBm

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