[SOLVED] Limiter diode should be ground or 50 ohm?

Status
Not open for further replies.
D

Dummyeng

Member level 4
Joined
Mar 25, 2018
Messages
78
Helped
0
Reputation
0
Reaction score
0
Trophy points
6
Activity points
434
hi

i have a dumb question and sorry for that
limiter diode works after one area for example +8 dBm
so it is on after 8 dbm

but i know it should be ground but i dont understand because
after grounding base of theory all of the power should go back Vo=(RL/(RL+RS))Vi
so we should connect 50 ohm for dissipation power in it

is it correct?
 

Yes a shunt PIN diode limiter, after the level exceed the threshold, shorts the input to ground. The most part of the power is then sent back while the diode has to dissipate a small fraction of the incoming power.
 
if you connect to 50 Ohm then half of your power will go to load and half will dissipate
 
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…