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Peer-Review Record

Design of Compact Complex Impedance Transformer with Frequency and Terminal Impedance Tunability

Electronics 2022, 11(7), 983; https://doi.org/10.3390/electronics11070983
by Hongmei Liu *, Yongquan Guo, Xinshuo Wang, Shaojun Fang and Zhongbao Wang
Reviewer 1: Anonymous
Reviewer 2: Anonymous
Electronics 2022, 11(7), 983; https://doi.org/10.3390/electronics11070983
Submission received: 14 February 2022 / Revised: 12 March 2022 / Accepted: 21 March 2022 / Published: 22 March 2022
(This article belongs to the Section Microwave and Wireless Communications)

Round 1

Reviewer 1 Report

  1. How the the initial frequency f0 is assigned as 1.5 GHz to identify the circuit parameters? How the frequency bandwidth is fixed?
  2. The designed prototype is fabricated using the F4B substrate, but it has got certain disadvantages like poor rigidity and high coefficient of thermal expansion, in addition to high cost. How the designed prototype overcomes the mentioned disadvantage in the designed prototype using F4B Substrate.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

Reviewer 2 Report

The article deals with a relevant subject, including experimental results of the prototype developed. Nevertheless, some issues must be improved as described as follows:
1) The state of the art, essentially, was done based on articles 11 to 16. Please include other references to enrich this discussion. Furthermore, some of the added papers must be in Table VII.   
2) The article consists of only 17 references. In my opinion, a journal paper must have a minimum of 25 references.
3) The authors did not present any justification for the chosen impedances. It gives the impression of a random choice.
4) The factor m of equation 2, inserted in equation 1d, was introduced without explanation. Moreover, this factor should not be associated with the variable capacitor C3? Please explain.
5) Smith charts were not presented with tuned impedances. I suggest including an approach similar to the one introduced in Reference 1.

Author Response

Please see the attachment.

Author Response File: Author Response.pdf

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