- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
讨论一下RF calibration
录入：edatop.com 点击：
很希望把自己经验共享给大家，所以希望集中从calibration的原理，算法和实现三个方面总结，希望能集中不同平台的解决方法。
怎么说呢你先开个头吧
AFCAUTO Frenquency calibrationAPCAUTO power calibrationAGC AUTO gain calibration
1 APC Power level: Power level calibrated and tolerances, how is data for NVRAM calculatedFor 4 bands:GSM859/900: pcl 5-19;dBm:32,31,29,27,25,23,21,19,17,15,13,11,9,7,5DCS1800/PCS1900: pcl 0-15; dBm:29,28,26,24,22,20,18,16,14,12,10,8,6,4,2,0recommended tolerances: ±0.2scale factor value should be saved into flash2 AGC Radio gain measured and siggen. Mid channel for each band;Generator is set to -85dBm for MaxGain testshould be as:send "CalDevGsmGainProgramReq" to handset, and handset return "rssilevel",then MaxGain = rssilevel/16 - (-85);Generator = -65dBm for Reduction Gain testsame as above: Reduc Gain = (MaxGain - (rssilevel/16 - (-65)));Then, fill the Gain code table for each band; 3 AFC TX power vs frequency: Power level and channels used, how is data calculated This process is same as power level. The different is the measurment channel. . 4 RSSI vs frequency: Power level and channels used, how is data calculated The commands same as RX gainSend "CalDevGsmGainProgramReq" return "rssilevel"Rssicomp[channel] =-16 * (rssilevel - (-85) - MaxGain)
楼上的是ADI的吗？
上面说的一点都不实用
楼主，每个平台都有自己的rf calibration sofeware spec，好好看看spec就可以了。平台的校准的方法都是不一样的，而且这个东西没有必要求同存异，整理出一套规范，而且校准中所用到的计算方法也不一样。
我这有GSM、CDMA2000、WCDMA的校准资料，有谁想要联系我
这些应该是工厂生产用的吧？
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