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Rectangular patch antenna design - RF Cafe Forums
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jrk
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Post subject: Rectangular patch antenna design
Posted: Mon Jan 22, 2007 6:44 am
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Joined: Mon Jan 22, 2007
6:08 am Posts: 2 |
Hi, I'm in the process of designing a simple
microstrip rectangular patch antenna. I intend to
feed the structure by using a co-axial wire inserted
through a hole in the ground plane, and substrate.
I understand that the (0,1) and (0,3) modes of a
rectangular patch resonator both exhibit broadside
radiation and the same polarization. But what exactly
is meant by (0,1) etc.? Also I presume that one
can only excite these two modes if the antenna is
dimensioned correctly and fed in the correct location.
Could anyone elaborate on what is required?
I have found a formula than can be used to determine
dimension L. But didn't find such formula for W.
I understand that W must be less than a wavelength
in the substrate material, in order to avoid the
excitation of higher order modes. Aside from this
limitation can/should one dimension W arbitrarily?
Several of the rectangular patches in the literature
seem to have a L/W ratio of about 0.75, is there
a reason for that? Thanks
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jrk |
Post subject: A tutorial answering my questions
Posted: Thu Jan 25, 2007 4:19 am
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Joined: Mon Jan 22, 2007
6:08 am Posts: 2 |
For anyone who's interested in this I found answers
to my questions in a really well written tutorial
on the RF globalnet site. Title: The Basics
Of Patch Antennas By: Orban Microwave Products
Thanks, James
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nubbage |
Post subject:
Posted: Fri Jan 26, 2007 1:12 pm
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General |
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Joined: Fri Feb 17, 2006
12:07 pm Posts: 218 Location: London UK
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Hi jrk Thanks for that. I tried to put a reply
together based on articles I have culled from various
tech pubs, but the guys writing the papers just
wanted to goof off sprinkling bessel integrals all
over the place, which wasn't much use to answer
your very apposite question. I have often
needed design curves for various patches such as
dual frequency, various bandwidths etc but never
could find a straight forward kitchen sink treatment.
Thanks again
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Posted 11/12/2012
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