Element7k
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[/quote]wolf303 said:Dear Element7k:
how can i open your *.sat file in hfss8.0? can?
can you upload your project(hfss 8.0) about printed ifa simulation?without being solved i think the size is small. i need your help!
i do not know how to draw the model and set the boundary?do you have some example about printed antenna simulation?
yes,v8 runs as well as v9.but hf$$'s mesh is sensitive.sometimes the results are slightly different.this do not matter,i think.yellowtooth said:But I think 9.0 should be compatible with 8.0.
kayaoo said:yes,v8 runs as well as v9.but hf$$'s mesh is sensitive.sometimes the results are slightly different.this do not matter,i think.yellowtooth said:But I think 9.0 should be compatible with 8.0.
i ul my ifa design too. It is used in 2.45G ism band(80MHz), the hight is reduced to minimize the size. i don't know how to tradeoff between the bandwidth,the fabrication and the size.the connections between the multilayers is also a problem.is single layer better?
kayaoo said:hi element7K,
ul the .sat and .s3m file instead of .hf$$ because they may be used in V8(i am not sure).does the struture look strange? the antenna is layouted on a 6 layers fr4 pcb. the layers are connected by dense vias to form a thick metal. i think this is better than only one thin metal layer on the top.but i am not sure. maybe there exist other problems. what's ur opinion?
yellowtooth's project uses e boundaries instead of metal objects. so the boxes have zero thickness and can not own a material setup.i think it can work too.it is really difficult to understand the difference between the results from v8 and v9.
ul the .hf$$ files.
Element7k said:If it is a "stand alone" antenna it will increase the cost of the antenna and make fabrication more difficult. Maybe it is easier with a simple double sided FR4. It can be manufactured quickly and cheaply without involving more mechanical effort. From the simulations, your antenna works and if it is within budget without $$$ constraints, I don't see why not your antenna will not be a hit?!
However, I tried out yellowtooth's antenna on both C/$/T and HF$$ and both of simulations exhibited frequency shift towards the 2.6 GHz range so I think yellowtooth's antenna needs some tuning before it can be used in the Bluetooth 2.4GHz range. However, the antenna might still work in real life as close enough is good enough.
kayaoo said:i also simulated yellowtooth's ifa in cst and hfss and got similar results.not only the frequency shifts but the return loss is worse than yellowtooth's reult. maybe settings are different,or maybe not.
yellowtooth said:How 2 import the HF$$8.0 files into HF$$9.0 ?
I wanna compare the results between 8 and 9 too.
yellowtooth said:I have got the HF$$9.0 recently, which is about 130MB.
But I can only find the *.hfss files in the example folder.
And there is no "import" and "export" command in the "file" pull down menu.
Some one has UL the *.sat and *.sm3 files.
But there is no such files in both 8.0 and 9.0's folders.
How can I use these files ? Can I get the *.sat or *.sme file from *.hfss file ?
Thank U vry much.
kayaoo said:hi element7K,
ul the .sat and .s3m file instead of .hf$$ because they may be used in V8(i am not sure).does the struture look strange? the antenna is layouted on a 6 layers fr4 pcb. the layers are connected by dense vias to form a thick metal. i think this is better than only one thin metal layer on the top.but i am not sure. maybe there exist other problems. what's ur opinion?
yellowtooth's project uses e boundaries instead of metal objects. so the boxes have zero thickness and can not own a material setup.i think it can work too.it is really difficult to understand the difference between the results from v8 and v9.
ul the .hf$$ files.
yellowtooth said:Thanks for Element7k's help, I have succesfully import the file *.sm3 and *.sat.
When I open the *.HFSS file provided by kayaoo, it take me all teh afternoon to simulate only with error that no enough memory.
During the process, it seem need several handred MB disk space.
Is it right ?
peterpsomos said:I have a question about the Dual_Band F-shaped Monopole antenna for 2.4/5.2 GHZ WLAN Applications of the Kin-Lu Wong publication.
In the publication i read that there is a ground plane printed on a back of the substrate(as expected) ecxept at the region below the proposed antenna.Why we dont put ground plane below the proposed antenna?Does it play any role in the resonant frequencies or it changes only the radiation pattern?If we put ground plane below the proposed antenna what would change?
Thank you for your time
peterpsomos
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