# Best numerical tehniques for simulating UWB antennas?

Status
Not open for further replies.

#### sherb

##### Junior Member level 1
hello,

what are the best numerical tehniques for simulating UWB antennas?

regards,
Sherb

##### Full Member level 6
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

Points: 2

#### IICCEE

##### Full Member level 3
UWB antennas simulation

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

#### aaron412

##### Member level 3
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

##### Member level 2
UWB antennas simulation

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

#### sherb

##### Junior Member level 1
UWB antennas simulation

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

#### Wiley

##### Member level 4
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.

##### Full Member level 6
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?

#### ryfnjust

##### Member level 1
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

##### Junior Member level 2
Re: UWB antennas simulation

Why not HFSS or IE3D

Status
Not open for further replies.