Antenna - Theory .com: The Antenna Site

Antenna Basics Antenna Types Smith Charts Antenna Measurements

antenna-theory.com :: View topic - Log Periodic Tooth antenna
antenna-theory.com Forum Index antenna-theory.com
Antenna Theory
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Log Periodic Tooth antenna

 
Post new topic   Reply to topic    antenna-theory.com Forum Index -> Questions Related to Antenna Theory
View previous topic :: View next topic  
Author Message
Dan
Antenna-Theory.com Newbie


Joined: 28 Jan 2014
Posts: 1

PostPosted: Tue Jan 28, 2014 10:31 am    Post subject: Log Periodic Tooth antenna Reply with quote

When designing the concentric circles as found at this page http://www.antenna-theory.com/antennas/wideband/log-periodic.php
It is mentioned that they are of radii r1, r2,... R1, R2.
Im confused as to what this means, am I multiplying each radii by 1, 2, 3.. etc.? Also, is the number of circles a fixed amount?

Thank you for your time

Regards,
Dan
Back to top
View user's profile Send private message
Schubert
Antenna Wizard


Joined: 08 Apr 2009
Posts: 161

PostPosted: Wed Jan 29, 2014 3:25 am    Post subject: Reply with quote

r1, r2, etc is just a subscript (i.e. the inner radius of the first tooth, the inner radius of the 2nd tooth)

they are geometrically related per the equation on the listed page

r_(n+1)/r_n = k
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    antenna-theory.com Forum Index -> Questions Related to Antenna Theory All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group