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antenna feeding

 
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Abu Maria.
Antenna Theory Regular


Joined: 22 Jan 2011
Posts: 39

PostPosted: Thu Jun 30, 2011 2:56 pm    Post subject: antenna feeding Reply with quote

hello
if I have a patch antenna fed by a coaxial cable , and i have the diagram parameter s of this antenna , i want change feed coaxial by a microstrip , and i want to have the same results with coaxial cable , is there a change or a consideration that must take into account , especially for networks patch ?
thnak u
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bigSteve
Antenna Wizard


Joined: 14 Mar 2009
Posts: 265

PostPosted: Fri Jul 01, 2011 2:56 am    Post subject: Reply with quote

There's no real rule of thumb for changing the feed type and how that affects the antenna.

There are the obvious differences: for instance if you have a patch fed from underneath by a coaxial cable, then it is difficult to feed at the exact same spot with a microstrip transmission line (will need to cut away the edges so the transmission line enters the patch at the correct point)
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Abu Maria.
Antenna Theory Regular


Joined: 22 Jan 2011
Posts: 39

PostPosted: Fri Jul 01, 2011 8:41 am    Post subject: Reply with quote

thanks bigsteve
we say that to get the same results ,the important thing is to have adaptation
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