megaknaller
Member level 2
Hi,
I´m designing an output matching section for a high-frequency cascode amplifier. The simulation shows that the S22 of the amplifier is almost 0 dB (very high output impedance typical for a cascode) and now i have to design a matching section for a 50 Ohm load.
How could i do this? Is it possible to match an almost open circuit to a real impedance (50 Ohms)? Or should i first convert the current output of the cascode to a voltage output through an additional stage like a CE stage? Or use maybe a buffer follower emitter stage before designing the output section?
In advance thanks for any idea!
Regards
I´m designing an output matching section for a high-frequency cascode amplifier. The simulation shows that the S22 of the amplifier is almost 0 dB (very high output impedance typical for a cascode) and now i have to design a matching section for a 50 Ohm load.
How could i do this? Is it possible to match an almost open circuit to a real impedance (50 Ohms)? Or should i first convert the current output of the cascode to a voltage output through an additional stage like a CE stage? Or use maybe a buffer follower emitter stage before designing the output section?
In advance thanks for any idea!
Regards