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equivalent circuit of an antenna

 
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Rfdesign
Antenna Theory Regular


Joined: 31 Dec 2011
Posts: 16

PostPosted: Fri Jan 06, 2012 4:39 am    Post subject: equivalent circuit of an antenna Reply with quote

hi
I want to draw the equivalent circuit of an antennas but i don't know how should I draw it?I simulated my design in CST.
How should I calculate the lumped element of each segment of the radiator?
In the antenna designing we only have a conductor patch to radiate , feeding pin, short pin, substrate and the ground plane, so how can we create capacitance or inductance effect in that structure?
and more important form where we conclude that which length of the radiator works as a capacitance or inductance ?
would you help me please? Confused
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Schubert
Antenna Wizard


Joined: 08 Apr 2009
Posts: 161

PostPosted: Fri Jan 06, 2012 11:24 pm    Post subject: Reply with quote

The feeding pin is your inductance. The open end of the patch antenna is capacitive. The radiation itself can be viewed as a radiation resistance. You should read this page and understand it to give you an idea for slot or if a antennas:

http://www.antenna-theory.com/antennas/aperture/ifa.php
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Rfdesign
Antenna Theory Regular


Joined: 31 Dec 2011
Posts: 16

PostPosted: Sun Jan 08, 2012 12:18 pm    Post subject: Reply with quote

thanks for your reply.
I'll read and ask if it exists yet.
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jasonmorgan
Antenna-Theory.com Newbie


Joined: 09 Jul 2018
Posts: 1
Location: Finland

PostPosted: Mon Jul 09, 2018 6:17 am    Post subject: nice Reply with quote

nice
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