A Novel Meander Bowtie-Shaped Antenna with Multi-Resonant and Rejection Bands for Modern 5G Communications  
[PERSON]  
1 Department of Electrical Engineering, The University of Jordan, Amman 11942, Jordan; [EMAIL_ADDRESS]  
12 Department of Signal Theory and Communication, Universidad Carlos III de Madrid, Leganes, 28911 Madrid, Spain 2  
[PERSON]  
2 Department of Electrical Engineering and Technology, Government College University Faisalabad, Faisalabad 38000, Pakistan 23 Department of Electrical Engineering and Technology, Government College University Faisalabad, Faisalabad 38000, Pakistan 3  
[PERSON]  
4 School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH10 5 DT, UK; [EMAIL_ADDRESS] (N.O.P. ); [EMAIL_ADDRESS] (C.H.S.) 4 Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1 DP, UK; [EMAIL_ADDRESS]  
[PERSON]  
4 School of Engineering and the Built Environment, Edinburgh Napier University, Edinburgh EH10 5 DT, UK; [EMAIL_ADDRESS] (N.O.P. ); [EMAIL_ADDRESS] (C.H.S.) 4 Faculty of Engineering and Informatics, University of Bradford, Bradford BD7 1 DP, UK; [EMAIL_ADDRESS]  
Footnote 4: [[https://www.mdpi.com/journal/electronics](https://www.mdpi.com/journal/electronics)]([https://www.mdpi.com/journal/electronics](https://www.mdpi.com/journal/electronics))  
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Footnote 11: [[https://www.mdpi](https://www.mdpi)]([https://www.mdpi](https://www.mdpi)). as in [9], or obtained the other definition of the UWB by covering more than 500 MHz of bandwidth, as in [10]. Numerous distinct geometries of multiband and or UWB antennas with one or more notches have been documented in the literature. A lanky leaf antenna was reported in [11] to produce two rejection bands within the UWB range of 2.8-10 GHz. A small monopole antenna was adjusted in [12] to produce triple rejection bands within the UWB of 2.285-19.35 GHz with 5.88 dB gain and utilizes three PIN diodes. Four nested hexagonal fractal antennas were designed in [13] to operate in multiple frequency bands. For one of their designs, 'Antenna III' has five resonant frequencies in the UWB of 1.92-13.45 GHz with only one notch at a level around \(-6\) dB and a peak average gain of 2.96 dB. A hexagonal shape microstrip patch with its edges being replaced by round curves operating in the frequency range 3-27.57 GHz [14] was adjusted by adding an inverting stub and other two slots of triangular shape to create triple frequency notches with bandwidths of 1.63 GHz, 1.09 GHz, and 0.76 GHz in an SWB with a 179.4% percentage bandwidth (PBW) [15]. In [16], a monopole antenna based on the split-ring resonator technique is well-designed to produce three operating bands. The antenna has a resonance at 2.45 GHz in addition to dual bands within the UWB range 3.4-11.8 GHz. A unit-cell metamaterial of dimensions 10 \(\times\) 10 mm\({}^{2}\) was extended into a 2 \(\times\) 1 and 2 \(\times\) 2 MIMO in [17].