Corrections to “Ultra-Wideband Spurious Radiation Suppression in Microstrip Antennas Using Integrated Uniplanar Compact Coupling Structure With Controllable Transmission-Zeros Matching Approach”

In the above article [1] , although there is no technical error in Fig. 13(b) , the frequency ranges in the pictorial representation for the highlighted portion (rectangular area outlined by a magenta-colored dotted line) and the zoomed figure are different. The main figure has a very wide frequency range from dc to 28 GHz. The zoomed portion has a very narrow frequency range from 2.9 to 3.2 GHz. Please note that the highlighted portion is just a representation, and hence, the frequency range is not exactly the same (one-to-one) for the zoomed figure, as it is very difficult to highlight a 400-MHz range over a 28-GHz span.