stacking fractal antennas
I need a suggestion. I'm working on my PhD with fractal antennas as a topic. Until now I have been working on Sierpinsky carpet antenna analysis and I've got some interesting results. I have done what was possible but it is not enough for a complete PhD thesis and now I'm stuck.
As I have a jackass mentor who doesn't help my and I myself do not know what to do next I'm asking you to give me some ideas, directions. What would be possible to do (study) starting from S. carpet?
Thanks
hi,dr vfurlan,i have amaster thesis fractal antennas,design,characterization and application,if u want it,i could upload it for u
Hi Dear vfurlan!
Calm down Buddy! Don't upset yourself!
I don't know what have done so far, but I suggest you to optimize the antenna parameters. You can study their applications in array antennas too, or you can make them ultra wideband structures.
Thanks!
Arrays are out of the question. In what way can I make ultra wideband structures out of S. carpet antennas?
Well, I would think in terms of the following:
In another year or so, all of the American broadcast television stations are going to shut down their analog broadcasts, and only transmit in digital format. This is going to open up 70 nice juicy channels for wireless use.
Unfortunately, most of these frequency channels are so low that the antennas would have to be physically huge. IF someone could come up with omnidirectional and dual polarization "short" antennas (on the order of 2 inches or so in length), then countless commercial applications could unfold in the 30 to 700 MHz region.
I would try to come up with a dual polarization omni antenna with good efficiency over a 5% band in that range. It might be something like a fractal pattern quadrifilar helix, etc?
Dear Vfurlan,
I will strongly suggest that you can stack up your antennas (with nilon spacers) for up to four layers for wider bandwidth. It has been investigated by only few people in IEEE Transaction.
Probably you can try with different shapes of patch antenna for your first and second stack, then your fractal (as third or forth layer). Use probe as your feeding method.
Or maybe you can make it reconfigurable (by using parasitic plane) and its switching using diode or more complicated but really promising, RF MEMs.
Strongly recommend you to use CST or other 3D simulator to simulate this. Hope this helps.
I'm doing a PhD in Fractal antennas. For simulations i use HFSS. The problem with em is that is very hard to draw the fractal shapes. In acurracy i have no problems, despite a lot of opinions in favore of CST. We can exchange some ideas.
Currently working on fractal applications for artificial magnetic groundplanes, which include sierpinski, hilbert and peano curves.
I am really interested in the broadband aspect of fractal antenna's, since, this would broaden the band of my AMC's
I also do this in HFSS (using periodic structures with master slave boundaries)
Drawing fractal curves by hand is a manace indeed, but I created some programs to output several fractals as points in a textfile (which I used in FEKO). Did not look at portability to HFSS however, but if HFSS can import text file based geometry, I can modify these scripts somewhat. All you need to do in HFSS then is to sweep a rectangle along the path to get a PCB trace.
I will have a look at it
you can refer to link:
https://www.edaboard.com/viewtopic.p...4724&highlight
this is thesis fractal antenna.
nazanin,pls correct ur link here
Check the pro*qu*est for this.....
how could i use HFSS 10 in analyzing Koch dipole fractal antenna
I am doing my Ph.D. on fractal antenna for wirless application. Please help me in the design of fractal antenna.
i worked with fractal for my master thesis. u can use ADS or empire 3d for drwaing of fractal structure. where u can put ur co-ordinate and its really easy
btw, what are u now and how did u complete the PhD
please send me ur M.tech thesis for reference.
Please send me the Mtech or PHD thesis on fractal for reference
i m also want to phd on fractal antenna can u help me...my email id-hitesh.mathukiya@gmail.com
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Hi Dear vfurlan!
i also want to phd on fractal antenna can u help me...
my email-hitesh.mathukiya@gmail.com
i want to phd in fractal antenna can you help me to choose perticular topic
@Hiteshhitesh
there are lots of Ph. D thesis are available on the internet. You should see them for more idea. Do you have any specific requirement for project? or you just choose a subject for the thesis?
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hello again
Dr. K. J. Vinoy is one of the pioneer in fractal antenna research. You guys can go through his thesis. I think this is the best material for starting research on fractal antenna.
here you can download http://https://etda.libraries.psu.ed.../1249%E2%80%8E