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difference betwenn "planar antenna" and "patc

 
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Abu Maria.
Antenna Theory Regular


Joined: 22 Jan 2011
Posts: 39
PostPosted: Sun May 08, 2011 5:01 pm    Post subject: difference betwenn "planar antenna" and "patc Reply with quote
hello
what is the difference betwenn "planar antenna" and "patch antenna" ? because i have read " ...Note that a planar antenna
is not always a patch antenna."
thank you
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admin
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Joined: 03 Jan 2007
Posts: 247
PostPosted: Mon May 09, 2011 7:30 am    Post subject: Reply with quote
A planar antenna, I believe, is simply a 2D antenna. That is a dipole, or triangular antenna, or anything that doesn't need a 3D representation.

A patch antenna can only operate if the patch is above a ground plane - otherwise there will be no radiation. Hence, the patch can't be viewed as simply a planar or 2D antenna.
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