“…Currently, various typical microwave power detectors have been studied, including thermoelectric, , capacitive, , and coupling-type microwave power detectors. , However, most of these energy-harvesting modules usually comprise a waveguide antenna, which reveals some shortcomings such as being large in size, small incident angle, and polarization sensitivity in practical applications. − Additionally, commercially available microwave power meters may be used to detect the power distribution of incident waves, but these cannot be applied effectively to large-area low-cost detection effectively. Fortunately, the emergence of the EM metamaterial harvester provides an ideal solution for this .…”