The development of a receiving antenna for a power transmission system and charging the batteries of the rear speakers of a wireless home theater
Abstract
The development of a receiving antenna for a power transmission system and charging the batteries of the rear speakers of a wireless home theater
Incoming article date: 30.07.2018As a solution eliminating the disadvantage of wired home theaters - the multiplicity of signal and feed wires - a method of wireless power transmission is proposed to charge the batteries of the side and rear speakers at a frequency of 2.45 GHz. The energy of the microwave radiation is converted into energy for charging the batteries by means of a special receiving module. The receiver module includes a receiving antenna, a rectifier and a power controller. This article discusses the calculation of the receiving antenna for this system in the structure of a wireless home theater. For the simulation, an antenna of the Yagi-Uda type was chosen, for which the gain and the beamwidth were determined. During the first stage of the simulation, antenna parameters were obtained that were unsatisfactory in the width of the directional pattern. At the second stage, the antenna design was modernized and a re-simulation was performed. Based on the results of this, it can be concluded that the parameters of the receiving antenna improved by 1.5 times, while the gain factor increased by 13%.
Keywords: wireless home theater, wireless microwave power transmission, receiving module, Yagi-Uda antenna, simplified Landtapo dipole, patch antenna, antenna efficiency indicator, radiation pattern, gain factor, reflection coefficient