Possible RF energy resources suitable for harvesting comprise mostly the signals of the communication systems like GSM, UMTS, LTE, and WiFi (IEEE 802.11). Besides low RF power levels, the efficiency of the harvester’s electronic circuitry poses major limitation, since it is nonlinear and strongly depends on input power levels . The basic RF harvester architecture includes an antenna followed by a matching circuitry and a rectifier rectified DC voltage can then be increased using step-up converters or voltage multipliers and accumulated in a battery or a capacitor. Other forms of energy could be harvested instead of RF radiation (i.e., heat, light, and vibrations) however, only RF harvesting is discussed in this paper. The RF energy harvesting refers to the utilization of ubiquitous RF energy transmitted by different wireless systems to remotely feed electronic devices with low-power consumption . The frequencies of interest were chosen so that they cover several main wireless systems operating between 0.8 GHz and 2.6 GHz, that is, GSM, UMTS, and WiFi.
#Measure distance between points in cst microwave studio Patch#
Four types of basic antenna structures suitable for harvesting applications, namely, the patch antenna, slot antenna, modified inverted F antenna, and dielectric resonator antenna, are compared from the viewpoint of reflection coefficient, efficiency, radiation patterns, and dimensions. This paper deals with suitable antennas for energy harvesting, which is a growing research field due to the utilization of nowadays ubiquitous and abundant RF energy.
0 kommentar(er)
