Extraction of the Complex Relative Permittivity from the Characteristic Impedance of Transmission Line by Resolving Discontinuities

Round 1

Reviewer 1 Report

This work reports a material complex permittivity extraction technique, which looks good. Here I suggest the authors can give more applications of the material complex permittivity extraction technique. I mean give specific application cases in the text, at least show more details about this technique’s application in the main text. After this, people would know the advances of such a technique. Also, the author should give the detailed reasons why such a technique can be better than others’ results.

Author Response

Dear reviewer,

Find as attached file my answers to your questions.

With the best,

Prof. Franck MOUKANDA MBANGO

Author Response File: Author Response.docx

Reviewer 2 Report

The followings are some minor points to improve this manuscript.

1.      Subfigure captions - Figure 9a, 9b, 9c could be merged into one together.

2.      Instead of given equations at the end of Section 3 (line 184), more qualitative analyses could be added to the experimental results.

Author Response

Dear reviewer,

Find as attached file my answers to your questions.

With the best,

Prof. Franck MOUKANDA MBANGO

Author Response File: Author Response.docx

Reviewer 3 Report

The originality of the submitted paper is not clear. The authors should emphasize what are the originality because the material parameter extraction methods are well-known. 

Figure 4s in the submitted paper are the same as those of the paper "Two-Line Technique for Dielectric Material Characterization with Application in 3D-Printing Filament Electrical Parameters Extraction (archives-ouvertes.fr) "  - what are the novelty of this paper?

The authors presented the "corrected plot" in many figures. But there are no descriptions or related equations about "corrected".  

Author Response

Dear reviewer,

Find as attached file my answers to your questions.

With the best,

Prof. Franck MOUKANDA MBANGO

Author Response File: Author Response.pdf

Round 2

Reviewer 3 Report

Even authors mentioned their novelty in the response, the novelty of this paper is not clear. The authors should present the novelty based on their previous results.

1) How to know the calculated results in Eq(36) is better in Eq(7) ? I could not find the reference values for each material.

2) In Table 3, Eq(9) should be Eq(7).

3) What are the differences between the submitted paper and "Progress In Electromagnetics Research C, Vol. 110, 67–80, 2021" ?

Author Response

Dear Reviewer,

Please accept my apologizes if my answers didn't get to you since many days. Find them as attached file.

Best regards.

Author Response File: Author Response.pdf

Round 3

Reviewer 3 Report

Still I don't get it why the authors use the unknown material. The comparison between the known material and the proposed method are strongly recommended for publication.

Author Response

Dear reviewer,

Find as attached file my second round question file that I sent few days ago.

Best regards.

Author Response File: Author Response.pdf