Post subject: 3:1 microwave combiner
Sun Apr 24, 2005 11:31 am
I want to know about
3:1 directional couper (combiner). Can anyone provide me papers, articles
or circuits about it?
Thanks for your time and help.
Post subject: LNA (Low noise amplifier) using an NPN
BJT with feeback
Unread postPosted: Sat Apr 23, 2005 2:18 pm
Joined: Sat Apr 23, 2005 2:09 pm
Location: Tampa, FL
This is my first post,
so please excuse my newbieness.
I'm reading up on LNA design,
and I'm curious about the DC bias feedback setup using a reactive component
(e.g. inductor) at the NPN's emitter lead to improve stability.
Can someone direct me to the formal analysis of this with regards
to relating it to stability? I'm assuming that it helps maintain the
collector current to have a uniform stability across a band of frequencies.
I'm just not to sure how to come up with the reactive component value.
I can see the results right away using ADS, but I would like to
see some sort of analysis on paper.
Thank you very much!