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Best numerical tehniques for simulating UWB antennas?

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sherb

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hello,

what are the best numerical tehniques for simulating UWB antennas?

regards,
Sherb
 

adel_48

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UWB antennas simulation

I think for large structures you need FDTD, for smaller ones MoM may be employed, for very small strucutres FEM can also be used
 

    sherb

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IICCEE

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UWB antennas simulation

you may also use the MOM or FEM method combine the AWE method.
 

aaron412

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Re: UWB antennas simulation

Since you're simulating UWB antenna you need results for a large number of frecuencies so you should use a time domain method like FDTD which generates results for many frecuencies at the same time.
 

xxgcatz

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UWB antennas simulation

i think cst mws is suitable fo the simulation of uwb antenna. its transient analysis is very good !
 

sherb

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UWB antennas simulation

sorry IICCEE what do you mean by the AWE method, I haven't heard of it before?
 

Wiley

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Re: UWB antennas simulation

sherb said:
sorry IICCEE what do you mean by the AWE method, I haven't heard of it before?

AWE is the Asymptotic Waveform Evaluation method. It expands the matrix elements in a Taylor series with respect to frequency to evaluate the derivative of the Z matrix with respect frequency. The derivatives you have the greater the bandwith of your approximation.

Almost every frequency domain comercial solver uses some variation of this method to compute a frequency sweep. For instance ALPS is essentialy the same but a Pade expansion instead of a Taylor series. Computing every frequency point is very wasteful.
 

adel_48

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UWB antennas simulation

thank you very much wiley for your brief description. Actually I became very interested, is there some place where I can get more details?
 

Wiley

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ryfnjust

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UWB antennas simulation

I think cst microwave studio which is based on finite integration method is better that xfdtd. The former can mesh the structure in nonuniform way which can save a lot of computer resource and time with the same accuracy with that using xfdtd.
 

xcyyx

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Re: UWB antennas simulation

Why not HFSS or IE3D
 

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