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2.4GHz patch antenna - RF Cafe Forums
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sag
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Post subject: 2.4GHz patch antenna
Posted: Fri Sep 30, 2005 3:54 pm
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Hello,
I'm trying to design a patch antenna
for 2.4GHz and I get a 2-3% band width only, does
anyone know a way to make the BW bigger? It should
be easy to get 5% of BW but I just don't get it
in my simulations. I use IE3D.
10x
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kaka |
Post subject: Re: 2.4GHz patch antenna
Posted: Sat Oct 01, 2005 12:48 am
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sag wrote:
Hello,
I'm trying to design a patch antenna
for 2.4GHz and I get a 2-3% band width only,
does anyone know a way to make the BW bigger?
It should be easy to get 5% of BW but I just
don't get it in my simulations. I use IE3D.
10x
hi sag: i am not skillful in ie3d , but i
can have a try if you would like to send me your
model , and my email is :
fanqikai@163.com
i introduce a book :<< Compact and Broadband
Microstrip Antennas >> hope it can be useful
. rgz woshifanka
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jian@zeland.com |
Post subject: Patch Antenna Bandwith
Posted: Mon Oct 03, 2005 11:22 am
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I think for a typical patch antenna, you will get
about 5% bandwidth if you use the substrate thickness
of 5% of the wavelength. If you want to get wider
bandwidth without increasing the substrate, which
may increase surface wave, you may want to consider
stacked patch, aperture coupled patch etc.
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sag |
Post subject:
Posted: Fri Oct 07, 2005 3:15 pm
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I used a 125mil substrate with er=2.2 and a typical
patch as you get from the basic equations (BALANIS
for example).
do you know of a rule of thumb
that gives you the relationship between the thickness
and the BW?
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jian@zeland.com |
Post subject:
Posted: Fri Oct 07, 2005 3:27 pm
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From my experience, for a typical patch antenna
with any funcy staff (slot, vias etc), I think the
bandwidth is about 1% when the substrate thickness
is about 1% of the waveguide wavelength. It is a
rough estimation.
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jives |
Post subject: BW of a Patch Antenna
Posted: Fri Oct 07, 2005 4:52 pm
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Joined: Thu Jul 28, 2005
6:18 pm Posts: 3 |
In the book "Microstrip Antenna Design Handbook"
by Bhartia, et.al., figure 9.1 is a plot of %BW
vs. substrate thickness and dielectric constant.
It only has plots for epsilon of 2.2 and 10, but
it can be interpolated rather easily. I've used
this chart many times and it gives a pretty good
estimate of BW prior to doing the actual design
and measurement.
The book is available on
Amazon and really is a must have for anyone doing
a lot of microstrip patch designs.
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sag |
Post subject:
Posted: Fri Oct 21, 2005 10:09 am
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I'll take a look at that figure and try another
sim. 10x all.
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Posted 11/12/2012
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