Design Of Solar Cell Integrated Microstrip Array Antenna With Low Shading Rate

With the development of new energy technologies,solar cells have been widely researched and applied as components of photovoltaic power generation,and antennas,as the devices for transmitting and receiving signals,play an important role in the communication system.With the advent of the 5G era,the number of base stations will increase greatly to achieve better signal coverage.The integration of solar cells and antennas can effectively reduce the cost of power supply and achieve self-power supply;it can also reduce the size of solar cell and antenna,and build antenna arrays relying on optical resources.In this thesis,based on the sub-6 frequency band of 5G communication,the solar cell integrated microstrip array antenna with low shading rate is studied.The specific contents are as follows:1.The research background and significance of the solar cell integrated antenna are introduced,and the research status of the solar cell integrated antenna is investigated,then the problems encountered in the current solar cell integrated antenna technology are summarized.The relevant theories of solar cells,antennas and solar cell integrated antennas are analyzed to provide a theoretical basis for the design of solar cell integrated antennas.2.A solar cell integrated array antenna with low shading rate is designed.The L-type probe coupling feed patch antenna is designed and placed above the solar cell packaging structure.The grid structure is used to reduce the light blocking area of the antenna to the solar cell so that the the best photovoltaic performance of the solar cell can be guaranteed.In addition,the grid structure can achieve the miniaturization of the antenna by extending the equivalent path of the surface current,which further reduces the shading rate of the antenna;L-type probe feeding is used to effectively expand the antenna bandwidth.The influence of the grid structure on the resonance frequency,bandwidth and gain of the antenna is studied to understand the mechanism.Optimize the antenna model to increase the light receiving area of the solar cell while ensuring the antenna performance.Finally,based on the application requirements of beam scanning,an 8 × 8 solar cell integrated array antenna with low shading rate based on the array element is designed and simulated.The proposed antenna has a wide bandwidth and is suitable for array applications.3.A solar cell integrated array antenna with zero shading rate is designed.Utilizing the solar cell aluminum electrode layer,the solar cells are used to replace the metal patch based on the metasurface structure,which solves the problem of the antenna blocking the solar cell receiving light.The slot coupling structure is used to eliminates the DC component on the transmission line and introduce additional resonance modes,thereby expanding the antenna bandwidth.The characteristic mode theory was used to analyze the working mode and parameters of the metasurface antenna,then the antenna was optimized;The through-hole structure is introduced to solve the high-order mode that may occur during the transmission of the stripline so that the the gain of antenna can be improved.Finally,A 4 × 4 high-gain antenna array with zero shading rate is designed according to the array element.