Numerical and experimental generated data during project https://doi.org/10.1038/s41598-024-60678-3

The dataset was generated during a project aimed at designing a printed wideband antenna with a planar geometry for Internet of Things (IoT) applications. The proposed design exploits a coplanar-waveguide-fed modified microstrip line monopole for the excitation of circularly polarized waves radiating in the broadside direction. The impedance bandwidth of the antenna exceeds 8 GHz in the 28 GHz mm-wave band, i.e., it ranges from 25 to 33.5 GHz. Additionally, an axial ratio below 3 dB is achieved within the operating band from 26 to 33.5 GHz with the alterations of the surface current using straightforward topological adjustments of the physical parameters.