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Registered Synchronization Apparatus for Accurately Demodulating Signal Input to PJM Tag and PJM Tag Including the Synchronization Apparatus
이미지 확대
Synchronization Apparatus for Accurately Demodulating Signal Input to PJM Tag and PJM Tag Including the Synchronization Apparatus
- Inventors
- Ji-Hoon Bae, Choi Gil Young, Yang Hoongee, Chae Jong- Suk, Lee Donghan
- Application No.
- 12608862 (2009.10.29)
- Publication No.
- 20100246738 (2010.09.30)
- Registration No.
- 8325868 (2012.12.04)
- Country
- UNITED STATES
- Project Code
- 08MC4100, Development of Next Generation RFID Technology for Item Level Applications, Chae Jong- Suk
- Abstract
- A passive phase jitter modulation (PJM) tag is charged with power in a continuous wave (CW) section. When receiving a command from a reader, the passive PJM tag must recognize the command and determine exactly when to begin demodulating the command. Only then can the passive PJM tag demodulate the command. To this end, a synchronization apparatus for accurately demodulating a signal input to a PJM tag includes a plurality of correlators correlating a received phase jitter-modulated signal with a template of an internal matched filter which is in the same form as at least a portion of a modified frequency modulation (MFM) flag.
- KSP Keywords
- Frequency-modulation(FM), Modulated signal, continuous wave(CW), matched filter(MF)