使用TriQuint5022遇到的一些问题

10062140358

用高通方案在做一个项目，GSM的PA用的是TriQuint5022，校准的时候，发现低频段会出现以下问题：
For some reason, phase unwrapping loop ran 10 times while trying to unwrap 1.72962e+036 radians.
Stopping execution to prevent infinite loop.
Phase info: previous = -0.546306 current = 1.72962e+036 next = -0.591177; index+1 = 15 array size = 314. CGSM_Tx_AMAM_AMPM_Cal_Alg::Process_Sweep
For some reason, phase unwrapping loop ran 10 times while trying to unwrap 1.72962e+036 radians.
Stopping execution to prevent infinite loop.
Phase info: previous = -0.504246 current = 1.72962e+036 next = -0.540676; index+1 = 15 array size = 314. CGSM_Tx_AMAM_AMPM_Cal_Alg::Process_Sweep
For some reason, phase unwrapping loop ran 10 times while trying to unwrap 1.72962e+036 radians.
Stopping execution to prevent infinite loop.
Phase info: previous = 0.187294 current = 1.72962e+036 next = 0.274085; index+1 = 13 array size = 314. CGSM_Tx_AMAM_AMPM_Cal_Alg::Process_Sweep

GSM_Tx_AMAM_AMPM_Cal complete
而校准高频段时没有这种问题。使用QRCT在非信令模式，将DAC设定为14000的时候，低频段功率也能出来，有33.5dBm，坛里的大神们有没有遇到过这样的问题啊？导致这个问题的原因是啥啊？给我个提示吧~~

lizx30340

从LOG上看，是AMPM校准出了问题，貌似是某个DAC值下面的PM失真值为1.72962e+036 ，可能是超出范围，但是看不出是哪个点，可以看看校准过程中的其他几个输出文件，看看又没什么有用的线索

goastwolf

楼主用的是8960校准的吗？可以把start DAC值加大，default一千多输出功率可能太小，8960动态范围不够

MiracleJ

一直没看懂这些GSM校准LOG的人飘过[em07]