WPT link with feko

Altair Forum User

Hello i need help can someone tell me the seteeps please to simulate wireless power transfer between two coils with feko

JIF

Hello estc,

 

What is the problem? We can help you, but you need to indicate what the problem is. You need to be more specific w.r.t. what you are not able to do. What have you tried thus far?

 

Regards

JIF

Altair Forum User

Hello thanks so much for your reply. I want to simulate wireless power transfert  between two dipole. Separed p by a distance equal to wave lenghtAt 300mhz Iwant to send for example 0.1 W  incedent power and show the  receiver power at recevir dipole but i d on t know the setep

JIF

Hi

This would be rather simple. Simply create the two dipoles and add a port to each dipole. You can then either perform an S-parameter calculation and from S21 deduce the power transfer. Or you could simply add a voltage source on the one port, set the power (you can set that for a configuration) to 0.1 W and add a load (probably your reference impedance load) on the other port. In POSTFEKO, you can then simply plot the power in the load (no additional requests required for that).

 

I would suggest that you have a look at Example B-01, B-02 and B-03 in the FEKO Example guide. The models in those examples are more complicated, but it shows you how the calculation is done. Example A-01 shows you how to create a dipole, but I assume you know how to do that already. ;-)

Altair Forum User

Thanks so much. Yes i know how create dipole yes. I dont find example BO1 ,B02,B03 guide?

Also how can plot power received and effeciency? Please

Altair Forum User

I m bigginer in feko. 

JIF

I suggest you watch some videos and look at some examples in the Getting started guide and then the Examples guide. If you start CADFEKO, you will be presented with the 'start page' that includes a list of recent files, but also links to videos (introduction to CADFEKO and the FEKO tour) and the documentation. I would suggest that you watch the videos first, then also watch the introduction to POSTFEKO video (same place, just in POSTFEKO). After that, I would suggest you work through the short Getting started guide projects (they are very step-by-step). Once you have completed that, have a look at the Examples guide. BO1, B02 and B03 are examples in the Examples guide.

Altair Forum User

Hello, 

I have simulated two dipoles the emitter dipole is connected incident power 0.1W and the dipole received is connected to a load .my problem is how calculate or plot received power and effeciency of the link in my example between two dipole

JIF

Have you tried plotting the load in POSTFEKO and changing the quantity to 'Power'?

Altair Forum User

Exactly i dont know how do that?

Altair Forum User

I dont understand. Exactly i dont know how do that?

JIF

Hello estc,

 

If you worked through the Getting started guide, you should be able to plot the power in a resistor. I have created a very short video showing you what to do in POSTFEKO. I hope this helps you to continue with your project, but I would really recommend that you work through the Getting started guide examples.

 

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Altair Forum User

Altair Forum User said:

Hello i need help can someone tell me the seteeps please to simulate wireless power transfer between two coils with feko

 hello, Hi,

 

I have a similar problem here, below are my problem, I am still new in FEKO and I am interested in design magnetic coils using FEKO,

Kindly can you give me the idea how start in design coils in FEKO? should I start design by using icon helix in FEKO toolbars or used others icon? below are my explanation,

 

I would like to start with creating two different magnetic based coils as Transmitting coil (TC) and Receiving coil (RC), to measure the Z impedance values changes with respect to the movement of TC around RC.

Following are the configuration which I would like to proceed,

Transmitting Coil:

L	67 uH
Q	22
Ccalc	24.19 nf
-	-
F	125khz

Receiving Coil:

Coil Configuration
L	728.73 uH
Q	53.24
R	15kohm
Ccalc	2.224nf
F	125khz
-	-

The Receiving Coil (RC) resonated at a frequency of 125kHz and diameter of 7cm. Transmitting coil (TC) dimension is 9 x 9 x 9 mm^3.

Datasheet of RC as: https://www.rfsolutions.co.uk/downloads/1457021091DS-ANT-125K.pdf

Initially, the RC and TC will be 3cm away from each other on z axis. The Impedance( |Z| )  value can be measured with respect to the movement of TC on x-axis/y-axis.

-> The RC: loop antenna actual dimension, the copper wire diameter, number of turn, the diameter. (the details of the coil determine the inductance value)

For RC:
0.236mm diameter (34 swg) Enamelled Cu wire.
Diameter Antenna: 7cm internal ,
Number of turns: 67 turns
Inductance: 700uH
Quality Factor (Q): 17

For TC:
Inductance: 67 uH
Quality Factor (Q): 22
Capacitor: 24.19 nf
Frequency (F)    125 kHz
Number of turns: 52
Diameter: 8mm


-> Matching circuit details.

Matching circuit For RC : C = 2.3159nF  (Formula:F=1/2π √LC)
Matching circuit For TC : C= 24.19nF    (Formula:F=1/2π √LC)
 

Kindly help and guide me to provide step to start my design.

Looking forward to hearing your comments on it,

Regards,