Reviewer: 1

Comments to the Author
Derivation of analytical solution of circular or rectangular coils was reported in previous references. For example,
P. Scholz, Analysis and numerical modeling of inductively coupled antenna systems, Doctoral Dissertation in Technique University Darmstadt, 2010.
W. G. Hurley and M. C. Duffy, “Calculation of self- and mutual impedances in planar sandwich inductors,” IEEE Transactions on Magnetics, vol. 33, no. 3, pp.?2282-2290, May 1997.
R.H. Good (2001). Elliptic integrals, the forgotten functions, European Journal of Physics, Vol.22, 2001, pp. 119–126, ISSN 0142-0807.

Also, a loop coil is similar to a loop antenna. Full or simplified electromagnetic analytical solutions of a loop antenna can be easily found in previous references. For example,
J. D. Kraus, Antennas (2nd Ed), McGRAW-Hill International editions, Ch. 6 (The loop antenna), 1988.

Reviewer: 2

Comments to the Author
This reviewer has failed to grasp the novelty of the approach. It also difficult to understand why good contributions as?

IEEE TRANSACtTONS ON ANTENNAS AND PROPAGATION, VOL. 44, NO. 2, FEBRUARY 1996
"An Exact Integration Procedure for Vector
Potentials of Thin Circular Loop Antennas"
are not referred to.?

The authors should make clear what are the advantages of their approach over the other presented so far.

Reviewer: 3

Comments to the Author
A theoretical paper based on Maxwell's equations is presented.
For a concrete example, the fields calculated by the deduced expressions are compared with the fields obtained by numerical integration. The simulator used should be mentioned in the section, not only in the abstract..
A comparison is then made with an experimental set-up. A photo of this experimental set-up is required.
Fig.12 is of poor quality. It should be improved.
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