Analysis of phase noise requirements on local oscillator for RFID system considering range correlation

Simple and new analysis method of phase noise requirements on a local oscillator (LO) for a RFID system is proposed. In general case, phase noise requirements are derived mathematically considering a reciprocal mixing with an interference signal. However, in RFID systems using the same oscillator for the transmitted signal and the LO, range correlation phenomenon effects the phase noise requirements. Thus we tried to derive new phase noise equation considering the range correlation effect on the residual phase noise in RFID system. Simulation results for IMF RFID system show that range correlation effect is a crucial factor in RFID system design.

[1]  Moon-Que Lee,et al.  A Passive Circulator with High Isolation using a Directional Coupler for RFID , 2006, 2006 IEEE MTT-S International Microwave Symposium Digest.

[2]  Jun-Seok Park,et al.  A 900-MHz Direct-Conversion Transceiver for Mobile RFID Systems , 2007, 2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium.

[3]  Wenting Wang,et al.  A 0.8-V 4.9-mW CMOS Fractional-N Frequency Synthesizer for RFID Application , 2006, 2006 Proceedings of the 32nd European Solid-State Circuits Conference.

[4]  Jenshan Lin,et al.  Range correlation and I/Q performance benefits in single-chip silicon Doppler radars for noncontact cardiopulmonary monitoring , 2004, IEEE Transactions on Microwave Theory and Techniques.

[5]  M. Budge,et al.  Range correlation effects on phase and amplitude noise , 1993, Proceedings of Southeastcon '93.