Highlights of Antenna Innovations (1974–2024): New developments over recent decades

This overview article provides examples of new antenna development across the past 50 years. Among others, the article highlights planar and conformal antennas, small antennas, fractals, apertures/arrays, Vivaldis and tightly coupled dipole arrays (TCDAs), active antennas, metamaterial apertures, textured materials antennas, magneto-piezoelectric antennas, non-Foster impedance matching, electromagnetic bandgap (EBG) antennas, automotive antennas, handset antennas, multiple-input multiple-output (MIMO) antennas, millimeter-wave (mmWave) antennas, terahertz antennas, medical application antennas and reconfigurable intelligent surfaces (RISs), and reflector antennas.