The Designer's Guide Community
Forum
ForumVerilog-AMSAnalysisModelingDesignTheory
Welcome, Guest. Please Login or Register. Please follow the Forum guidelines.
Jul 16th, 2024, 2:30pm
 
  HomeHelpSearchLoginRegisterPM to admin    
The Designer's Guide Community Forum › Design › RF Design › s11 in receiver
‹ Previous topic | Next topic ›
Pages: 1
Send Topic Print
s11 in receiver (Read 1872 times)
baohulu
Community Member
***
Offline



Posts: 43
china
s11 in receiver
Aug 10th, 2015, 10:54pm  
hi all,
 in a receiver design, lna should be matched with the antenna, I want to know, in a design,  how small s11 can be ? less than -20dB, -30dB, or ..... ?
Back to top
 
 
View Profile   IP Logged
aaron_do
Senior Fellow
******
Offline



Posts: 1398
Re: s11 in receiver
Reply #1 - Sep 6th, 2015, 5:42pm  
At any one particular frequency, S11 can be very low (e.g -30 or -40), but over a bandwidth, usually -10 or so is considered acceptable as it means 90% or the power is transferred.


regards
Aaron
Back to top
 
 
there is no energy in matter other than that received from the environment - Nikola Tesla
View Profile   IP Logged
Pages: 1
Send Topic Print
‹ Previous topic | Next topic ›
« Home ‹ Board
The Designer's Guide Community Forum » Powered by YaBB 2.2.2!
YaBB © 2000-2008. All Rights Reserved.
Copyright 2002-2024 Designer’s Guide Consulting, Inc. Designer’s Guide® is a registered trademark of Designer’s Guide Consulting, Inc. All rights reserved. Send comments or questions to editor@designers-guide.org. Consider submitting a paper or model.