The differences between lumped port and wave port in HFSS

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in this video in order to show the

difference between lampsport and wave 4

and migration passion antenna is excited

by both these excitations therefore we

compare these two excitations and

express their characterization

here we use driving mode of solution

type however for such a structure we

could use derive and terminal since

there is a specific ground reference in

this case

in the first step we excite the

structure using waveform since such

excitation must place outside the

structure and exactly where the energy

enters the structure the solution space

is considered as this the dimension of

the waveform should be considered as it

includes all of the energy and also a

scattered fills out of the structure to

increase the accuracy

by right click on the sheet and

selecting I find excitation we can

choose waveform and then this page would

be opened

in the next page we can specify the

number of modes

here we have only one dominant mode of

GM 0 1 0. so we let the number of modes

equal to one then in the integration

line we have specified the direction of

the field using a line

this line actually is a calibrating line

and it is required to make voltage

calculation

in the next page by activating the embed

option

we can change the refresh plane and this

option is

so useful to remove the effect of the

phase difference created by transmission

lines therefore in such a structures

waveform is more accurate than long spot

here we put the reference plane in where

the wave enters to patch then by

pressing finish the way for definition

is completed note that since in way for

the impedance of the port is not

specified

within this excitation comma and

impedance parameters can be calculated

in addition to f y and z parameters

in the second F tab the structure is

excited by lampspot despite of the

waveform loved Port can place inside the

structure therefore the solution of

space can be considered as this

in this case we should consider an

excitation plane between the conductors

and in the width of the micro acidic

line note that this excitation is not

suitable for a fracture which are filled

by more than one material and the

structure such as shown here which have

a discontinuity no do I find the long

spot we do right click on the sheet and

select I find excitation and then launch

photo

this page would be opened as it is seen

here in this case we should specify the

port impedance and reactance therefore

using this excitation on the f y and

that parameter could be calculated

and the parameter such as impedance and

comma cannot be computed we put

impedance equal to 50 and then press

next as it is seen in the next page

using lamps Port only one mod can be

computed by clicking in the integration

line the direction of the field can be

specified then press next for this

excitation the option of the embed is

the active therefore this excitation is

suitable for Junctions or the structures

in which the excitation should be played

inside the structure no we compare the

simulation results with each other as it

is seen there's parameters of these

metals have a little shift with each

other

actually the fields in a microstrip line

are as shown in this figure and wave 4

can figure out the fields more accurate

than long port in which the excitation

is considered as the figure this

difference revolves in the obvious

frequency shift moreover the

two-dimensional and three-dimensional

pattern achieved by the excitation have

a little difference as shown in this

figure I hope you to like this video

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