Phased antenna array simulation  dB plot and range calcns  RF
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Guest

Post subject: Phased antenna array simulation  dB plot and range calcns
Posted: Wed Aug 03, 2005 12:58 am



Hey guys,
I am currently doing a final year
project in which i am attempting to design a phasedarray
data link between unmanned aerial vehicles (UAVs).
I am currently doing a feasibility study on different
antenna configurations and I am looking for some
software that will allow me to do some simulations.
Specifically, i need simulation showing dB antenna
radiation pattern for both linear and circular array
configurations. Also, I am not very confident with
this material and I also need to be able to calculate
a projected range of transmission. I know the transciever
power and sensitivity of both transmitter and reciever,
so if anyone could point me in the right direction
with regards to these two questions I would be very
greatful
thanks
Michael Belperio





KGRoss 
Post subject:
Posted: Tue Aug 16, 2005 9:57 am


Joined: Tue Aug 16, 2005
9:18 am Posts: 2 
I assume your designing planar arrays? If so, I'd
recommend trying out Zeland Software's methodofmoments
EM simulator IE3D. The software will display current
distributions, radiation patterns and give you the
antenna properties. They allow one to get an evaluation
copy of the software which is nice. As far
as your second question you simply need to reference
the Friis Transmission equation:
http://en.wikipedia.org/wiki/Friis_Transmission_Equation.
You said you already know the Pt, the nessecary
Pr, and the wavelength, therefore once you've designed
your arrays and determined their effective gains
you will know the maximum range of the system.





Guest 
Post subject:
Posted: Mon Aug 22, 2005 2:24 pm



hi,
you do not need a simulation package
do perform such calculations and display radiation
pattern information. any antenna theory book, such
as balanis or stuzman, thiele will explain array
theory.
you can then assume a particular
element pattern type, such as cosine and develop
your radiation patterns using the element pattern
info and the array factor (which you will learn
about in said books).
using matlab you can
then write mfiles which could allow you to adjust
both the phase and amplitude distribution for your
array. then of course you could plot all of this
info.
what this wont help you with is impedance
coupling issues and so forth. however you have not
indicated that as part of your design process. so
considering this is a final year project, this approach
will give you a far better understand of phased &
amplitude array theory.
i suggest this approach
before diving into a simulation package.


Posted 11/12/2012


