Design of UWB Filtering Impedance Transformers and Power Dividers Using Stepped-Impedance Resonators

Round 1

Reviewer 1 Report

Dear authors

Thanks for the article

This paper seems good job but it requires several essential corrections, more over it up to you can make more interesting for the reader, it has good potential.

1-     All simulation results S11 and S21 should displayed into one plot top of each other

Left Y axis can your S11 and right Y axis can be S21 or S12.

2-     Please correct abstract, writing ‘’ good feature’’ is not appropriate at all, please be more precise to present your achievements.

3-     As you simulated could you please display the E and H wave on you structure, by indicating your excitation mode wave. Please display in 2D with legend bar E and H field.

4-     Could you please add Q factor parameter for comparison between measured and simulation?

5-     Please rewrite the conclusion.

 

Regards

 

 

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Please see my comments on attached file.

Comments for author File: Comments.pdf

Author Response

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Author Response File: Author Response.pdf

Reviewer 3 Report

Design of UWB Filtering Impedance Transformers and Power Dividers Using Stepped-Impedance Resonators

 After reading the paper thoroughly, I can state that it does provide some intriguing insights; nevertheless, there are a few things about which I am sceptical:

 

·        - What are the widths of the lines with the DGS region? There is a gap in the same area is not well defined as well.

·        -  It will be good to show S22 in Figure 7 or a separate graph since the matched load is 100 ohms.

·       -  If I am taking the account of lower frequency of the other works and based on the proposed work here then a size factor of 4/3 (based on 4GHz to 3 GHz) can be considered for a proper comparison. Thus, the size of other published data would be almost within the size limit of the design proposed here. Therefore, to claim size reduction for this work is difficult. However, I agree on the new methodology applied when step impedance transformers and DFG were applied.

·         - I like as well, when possible, to identify the location of the resistance for both dividers to reduce the isolation between the output ports without changing the power divider structure.

The English is fine however, it will be good to be assessed again before publishing. . 

Author Response

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Author Response File: Author Response.pdf

Reviewer 4 Report

In this paper, the authors present UWB filters combined with an impedance transformer and a power divider. The paper is well-organized. However, a few issues should be addressed before publication in Electronics.

(1) In Section 2.2, the UWB filter with DGS is introduced. The effect of DGS is not sufficiently examined and analyzed. It would be better if the authors discussed the DGS in more detail. Why did the authors employ the DGS in the UWB filter? Authors should provide a more rigorous explanation of the DGS effect.

(2) In Figure 14, a one-port measurement was conducted. It would be better if the measurement of S21 was obtained and compared with the simulated results.

 (3) In Figures 16 and 17, the authors presented the S-parameters of the power divider. It would be better if the measurements of S31 were added. Even though the filter has a balanced structure, the S21 and S31 should be shown in the same figure.

English language fine. No issues detected

Author Response

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Author Response File: Author Response.pdf

Round 2

Reviewer 1 Report

Dear Authors 

All the comment is considered, we can accept the paper now, in my opinion.

Regards

Dear Authors 

All the comment is considered, we can accept the paper now, in my opinion.

Regards

Reviewer 4 Report

Thank you for considering the reviewer's comments.