reduce the bandwidth for the gain

Status
Not open for further replies.
S

shanmei

Advanced Member level 1
Joined
Jul 26, 2006
Messages
430
Helped
8
Reputation
16
Reaction score
8
Trophy points
1,298
Location
USA
Activity points
4,496
I need a gain from 4-6GHz. Out of the band, I would like to the gain fall down.

But from the simulation, the 2-stages PA has a flat gain at 1-4GHz range.





How can I have a gain like the the bellowing figure? Thanks.

 

By adding high- and low-pass filters. The shown stop band slope is rather steep, requiring high filter order of 5 to 6.
 
In top of this, should be mentioned that usually the high pass filter is placed at the input, and the low pass filter should be placed at the output of the amplifier.
 
Thanks you.

The original input compensation network has one compensation stage. Now I change to two compensation stage, which greatly reduce the low frequency gain.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…