koushikr_in
Member level 2
Iam usign a GaAs FET (SGM2006). The datasheet says it can be used as UHF LNA.
Iam using it as an voltage amplifier at 1 MHz. I get a frequency response characterstics with voltaage gain of 15 (vout/vin) at 20 kHz and at 1 Mhz voltage gain=2.
The amplifier config is fixed bias common source with source grounded. gate 2 shorted to source.
why am i getting a band pass characteristics with 20 khz center freq?
Iam using it as an voltage amplifier at 1 MHz. I get a frequency response characterstics with voltaage gain of 15 (vout/vin) at 20 kHz and at 1 Mhz voltage gain=2.
The amplifier config is fixed bias common source with source grounded. gate 2 shorted to source.
why am i getting a band pass characteristics with 20 khz center freq?