- 易迪拓培训,专注于微波、射频、天线设计工程师的培养
MT6223D+ad6548+sky77542 射频dcs1.
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MT6223D+ad6548+sky77542 射频dcs1800 饱和功率低，请问改怎么调啊？
DCS PCL 11 = 7.79 PASS,Max :9.50 Min :6.50
DCS PCL 10 = 9.86 PASS,Max :11.50 Min :8.50
DCS PCL 9 = 12.17 PASS,Max :13.50 Min :10.50
DCS PCL 8 = 14.01 PASS,Max :15.50 Min :12.50
DCS PCL 7 = 17.50 FAIL,Max :17.50 Min :14.50
DCS PCL 6 = 19.68 FAIL,Max :19.50 Min :16.50
DCS PCL 5 = 22.82 FAIL,Max :21.50 Min :18.50
DCS PCL 4 = 26.07 FAIL,Max :23.50 Min :20.50
DCS PCL 3 = 28.00 FAIL,Max :25.50 Min :22.5
DCS PCL 2 = 28.46 FAIL,Max :27.50 Min :24.50
DCS PCL 1 = 28.49 PASS,Max :29.50 Min :26.50
DCS PCL 0 = 28.48 FAIL,Max :31.00 Min :28.50
DCS PCL 11 = 7.79 PASS,Max :9.50 Min :6.50
DCS PCL 10 = 9.86 PASS,Max :11.50 Min :8.50
DCS PCL 9 = 12.17 PASS,Max :13.50 Min :10.50
DCS PCL 8 = 14.01 PASS,Max :15.50 Min :12.50
DCS PCL 7 = 17.50 FAIL,Max :17.50 Min :14.50
DCS PCL 6 = 19.68 FAIL,Max :19.50 Min :16.50
DCS PCL 5 = 22.82 FAIL,Max :21.50 Min :18.50
DCS PCL 4 = 26.07 FAIL,Max :23.50 Min :20.50
DCS PCL 3 = 28.00 FAIL,Max :25.50 Min :22.5
DCS PCL 2 = 28.46 FAIL,Max :27.50 Min :24.50
DCS PCL 1 = 28.49 PASS,Max :29.50 Min :26.50
DCS PCL 0 = 28.48 FAIL,Max :31.00 Min :28.50
校准了么？
把PA 输出匹配调整一下吧
换Full PCL校准试一下
搞定了，把输出串的27pF电容改成了22pF，输出并了一个10nH的电感。功率就上来了。主要是因为4层板，把layer3作为参考地了，最好还是应该把layer2作为参考地就不会这样了。
看来又是匹配的问题？
匹配改成这样，900的功率正常吗？
没用过6548，这个transceiver到PA需要加衰减吗？
我们也是配23D+6548+77552，用四层板做四频，850和900的饱和功率可以上到35,1800和1900饱和功率可以上到32,PA前端也是用的27pf,不过我们参考地是二，四层，阻抗线尽量走第一层或第三层，第二层阻抗线的参考地不完整。
zhuan qian ne
长见识了
哪位神人用了电阻
申明：网友回复良莠不齐，仅供参考。
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