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Monopole antenna Designing - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.

 Post subject: Monopole antenna Designing
Posted: Fri Jun 03, 2005 5:22 am 
I m designing a ISM RF trasmitter(10mW type) operating frequency is 315 MHz

I want to use a monopole type of antenna plz guide me how to design a
monopole antenna(any article,formulae) for a particular frequency,what
should be the material/thichness for the wire used(copper,etc) and how to designit to have 50ohm or any input impeadence,

also guide me how can i measure the input impeadence of an
antenna(monopole-single wire type) practically.plz tell me if there is any
software for the designing this kind of antennas

with regards
pallav Aggarwal

 Post subject:
Posted: Sun Oct 16, 2005 9:52 pm 
Use 24cm long wire (Quaterwave Monopole) with gnd plane.

 Post subject:
Posted: Fri Oct 21, 2005 10:34 am 
buy a simple magnetic antenna used for car radio (like the one you see on taxi for it's communication) and then cut the antenna to 0.25 wave length. you can check it with a NA.
use it with a gound plane.

Posted  11/12/2012
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