jupitorcuu
Member level 5
1.9G LNA 's problem
I have used ATF 54143 to design a LNA for 1.9 GHz.
When I test it use Agilent's Noise Meter, there is a peak in NF.
In band 1.9 - 2GHz
The Gain is within + /- 1 dB, and is correct hign 15dB
except one point, NF is very low 1.2 dB
but at that point is nearly 10dB
Does any body meet the same problem in LNA test.
Seems not self oscillating
I have used ATF 54143 to design a LNA for 1.9 GHz.
When I test it use Agilent's Noise Meter, there is a peak in NF.
In band 1.9 - 2GHz
The Gain is within + /- 1 dB, and is correct hign 15dB
except one point, NF is very low 1.2 dB
but at that point is nearly 10dB
Does any body meet the same problem in LNA test.
Seems not self oscillating