Erratum to “A Novel Compact CP Antenna with Wide Axial Ratio Bandwidth for Worldwide UHF RFID Handheld Reader”

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In the article titled “A Novel Compact CP Antenna with Wide Axial Ratio Bandwidth for Worldwide UHF RFID Handheld Reader” [1], an incorrect file for Figure 2 was used during the production process and the figure should be corrected as follows.

(a)

(b)

(c)

(d)

Figure 2 

Evaluation steps of the proposed antenna. (a) Antenna 1, (b) Antenna 2, (c) Antenna 3, and (d) Antenna 4.