LTCC
Member level 1
Hei, guys. I recently has tested the triquint PA MMIC-TGA2508 integrated with Roger5800 , and can't get the output power at the recomanded bias condition Vd=7V, Vg=-0.36V. Actually, all the performance is worse than the spec. in the datasheet. The P1dB output power i get is 23dBm with a gain of 25dB.
The best P1dB output power i have is 26dBm with a gain of 28dB at 16GHz when i adjust the gate and drain voltage to Vd=4V, Vg=-0.44V. But still not as good as the performance in the datasheet.
Does anyone have similiar problem? Not limited to this mmic. When you use the MMIC PA, do you follow recomanded bias condition and get the good results, or adjust it a little and also good results? or just like me.
The problem is that I don't know where the problem is? Or the problem is the mmic itself?
Here is the datasheet of TGA2508. Any advices will be appreciated.
The spec. of TGA2508 is 30dBm P1dB, 30dB gain in the freq band 12~19GHz.
Sherry
The best P1dB output power i have is 26dBm with a gain of 28dB at 16GHz when i adjust the gate and drain voltage to Vd=4V, Vg=-0.44V. But still not as good as the performance in the datasheet.
Does anyone have similiar problem? Not limited to this mmic. When you use the MMIC PA, do you follow recomanded bias condition and get the good results, or adjust it a little and also good results? or just like me.
The problem is that I don't know where the problem is? Or the problem is the mmic itself?
Here is the datasheet of TGA2508. Any advices will be appreciated.
The spec. of TGA2508 is 30dBm P1dB, 30dB gain in the freq band 12~19GHz.
Sherry