发明名称 |
Method and system to calibrate an oscillator within an RFID circuit utilizing a test signal supplied to the RFID circuit |
摘要 |
In accordance with one aspect of the present invention, there is provided a method of calibrating an oscillator within a radio-frequency identification (RFID) circuit for use in an RFID tag. The oscillator has an oscillation frequency. A calibration value is stored within a non-volatile memory associated with the RFID circuit. The oscillator is calibrated in accordance with the calibration value. The storing of the calibration value includes recovering a reference frequency from a test signal supplied to the RFID circuit, calculating the calibration value to correspond to a difference between the recovered reference frequency and the oscillator frequency, and writing the calibration value to the non-volatile memory.
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申请公布号 |
US7394324(B2) |
申请公布日期 |
2008.07.01 |
申请号 |
US20040824071 |
申请日期 |
2004.04.13 |
申请人 |
IMPINJ, INC. |
发明人 |
DIORIO CHRISTOPHER J.;GUTNIK VADIM;HUMES TODD E. |
分类号 |
G01R23/00;G01R35/00;G06F19/00;H03B5/04;H03L1/00 |
主分类号 |
G01R23/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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