Review Reports - Design of UWB Electrically Small Antenna Based on Distributed Passive Network Loading

Round 1

Reviewer 1 Report

Comments and Suggestions for Authors

The electrically small antenna is fabricated and tested obtaining good agreement between simulation results and measurement results. To improve the paper, I consider that at each comparison between the results, tables with obtained results, antennas operate parameters (resonance frequencies, frequency band, bandwidth ..., obtained in S parameters) are needed to be clearer in their similitude. Maybe also, some errors can be calculated.

In Figure 2, the text is written too large in the description of the antenna components, respectively the coordinate system. Also in other figures, please check and modify them.

I consider that it is useful to specify the software program used for antenna simulation, before presenting the simulation results.

Author Response

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Author Response File: Author Response.pdf

Reviewer 2 Report

Comments and Suggestions for Authors

In the manuscript " Design of UWB electrically small antenna based on distributed passive network loading," the authors designed and measured the Vivaldi and magnetic dipole antennas. The paper needs more modifications, and I recommend accepting the manuscript with major revisions.

1. Include the novelty and significance of your work.

2. The word UWB in the title and the whole manuscript is inappropriate because the proposed antenna does not have a wide bandwidth.

3. The word small antenna in the title and the whole manuscript is inappropriate because 300 mm × 194 mm is not tiny.

4. In the abstract, the authors say, "The operating band of the electrically small antenna is 0.2 GHz-3 GHz"; however, the simulated S₁₁ in Fig. 9 and the measured S₁₁ in Fig. 12 show that the operation bandwidth is not.

5. The authors say, "The overall size is 0.06 λ₀ * 0.05 λ₀ * 0.12 λ_0." How are the antenna dimensions calculated in terms of wavelength?

6. There are discontinuities in the measured radiation patterns (Fig. 13); what is the reason for this?

7. Compare your antenna with relevant works.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 3 Report

Comments and Suggestions for Authors

- Based on the Vivaldi antenna theory, magnetic dipole antenna theory and distributed loading theory, an UWB electrically small antenna has been developed, analyzed, evaluated both numerically and experimentally. The proposed antenna operates throughout the frequency range of 0.2 GHz to 3 GHz, making it suitable for many applications such as base station antennas, low frequency detection, microwave sensing, and micro applications.

- The paper demonstrates an excellent level of organization and is presented in a proficient manner in all sections.

- I recommend the authors include a performance comparison table, which should be placed at the end of the findings section, alongside the corresponding data published in the literature.