Hello,
I am trying to design a mixer using a double gate FET (BF908) to mix an audio signal with a local oscillator at 5 MHz. I am using a board provided to me by my school so I have a schematic provided to me attached below. Should I bias the gates differently? I am also required to drive a 50 ohm load, so does that mean I should make the impedance of the secondary side of the transformer equal to 50 ohms at 5 MHz?
Thanks
I am trying to design a mixer using a double gate FET (BF908) to mix an audio signal with a local oscillator at 5 MHz. I am using a board provided to me by my school so I have a schematic provided to me attached below. Should I bias the gates differently? I am also required to drive a 50 ohm load, so does that mean I should make the impedance of the secondary side of the transformer equal to 50 ohms at 5 MHz?
Thanks
Attachments
-
42 KB Views: 10