This journal covers topics including, but not limited to: Microwave circuits, which encompass RF, microwave, and millimeter-wave amplifiers, oscillators, switches, mixers, and other components implemented in monolithic, hybrid, multi-chip module, and other technologies. Papers on passive components may describe transmission line and waveguide components, including filters, multiplexers, resonators, ferrite, and garnet devices. For applications, papers can describe microwave subsystems for use in communications, radar, aerospace, instrumentation, industrial, and medical applications. Microwave linear and non-linear measurement techniques. Antenna topics include designed and prototyped antennas for operation at all frequencies; multiband antennas, antenna measurement techniques and systems, antenna analysis and design, aperture antenna arrays, adaptive antennas, printed and wire antennas, microstrip, reconfigurable, conformal, and integrated antennas. Computational electromagnetics and synthesis of antenna structures, including phased arrays and antenna design algorithms. Radiowave propagation at all frequencies and environments. Current Special Issue: Call for papers: Metrology for 5G Technologies - https://digital-library.theiet.org/files/IET_MAP_CFP_M5GT_SI2.pdf