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Design a magnetic based coil using FEKO



Good day,


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:


67 uH




24.19 nf





Receiving Coil:

Coil Configuration


728.73 uH











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 can you suggest me the step or user manual for me to start on to this project.


Looking forward to hearing your comments on it,


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