这里还想请教一下,对于LDMOS的温度补偿,从器件的规格书来看,Gate Quiescent Voltage VGS(Q) Vmin=2.0V,type=2.4V,Vmax=3.0V,在环境温度从-40~85度的范围内?这个值是否也发生了变化,该如何补偿?
另外对于MRFE6VS25NR1,在中心频率为1150M,带宽20M,Pin(W)允许输入的最大功率是多少?
> for LDMOS temperature compensation ... at ambient temperature from -40 ~ 85 Degree range?
Please, you can use temperature compensated bias circuit as described in this application note:
https://www.nxp.com/docs/en/application-note/AN1643.pdf?fsrch=1&sr=2&pageNum=1
> maximum input power at 1150M
At 85C and the P3db compression point, 22.5 dB gain, the Pout is about 31W, roughly 45 dBm or a Pin of 22.4 dBm. Higher drive levels will not get you any more output power as the part has reached a hard saturation.
Have a great day,
Pavel
NXP TIC
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