thats ok. bytheway, i can help you if you let me know the substrate parameters you use, and your design restrictions such as riple you can allow, the minimum distance between microstrip lines or space limitations.htforever said:I use @DS filter DG to synthesize.
Then convert the LC to microstrip lines, use momentum to validate the performace.
Is this ok?
pva said:I use this method too and everything is OK.I think that tanD = 0.025 for FR4 this is very important for insertion loss and slope of filter.
you should use a resonable substrait, which is available at the market, you may use this:htforever said:Now I changed my substrate, A substrate for high frequency circuit.
Er=2.8, H=1mm. But I don't know the tanD, is 0.02 OK?
thus, er=0.01 is ok, but ask your director for exact value. (or name). bytheway, if you can reach IE3 D, it has a FilterSyn, wich is very nce program, and easily u can simulate it with the most precise moment code available. very reliable package.htforever said:My director provided me the material, I have got it.
But he only knows the Er and H, don't know the exact the model.
sorryhtforever said:I am familiar with @DS, it's 2.5D EM simulation.
tanD=0.01 or er=0.01?
i think the results are acceptable, u should trust simulation results of MoM code, frequency shift is resonable, try to enlarg your design for about 5%~10%, (shifting frequency to left), then acording to microstrip model (which you have to gain a frequency shift to left), your final results will be acceptable.htforever said:Would you like to take a look at my simulation:
Please check the attachment, a PDF file.
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?