Design And Co-simulation Optimization Of Broadband Dual-band Magneto-electric Dipole Antenna

The rapid development of the mobile communication industry has promoted continuous innovation and advancement in the field of antenna design.As mobile data transmission rates continue to increase,the complexity of mobile communication base stations continues to increase.As a key component in the wireless communication system,the antenna has also increased the design complexity.The use of genetic algorithm-based MATLAB and HFSS co-simulation automatic optimization can optimize the antenna with multiple parameters,which can effectively improve the efficiency of antenna design.Based on the research of related literatures,this thesis studies and designs wideband dual-band magneto-electric dipole antennas.The main work of the thesis is as follows:(1)A wideband dual-band single-polarized magneto-electric dipole antenna unit is proposed.The antenna operates at 1.61 GHz-2.99GHz in the low frequency band,achieving 60%relative bandwidth(S11?-10dB);the high frequency band operates at 4.81GHz-6.89GHz,achieving a relative bandwidth of 35.5%(S11?-10dB).The joint simulation optimization method is used to verify the S parameters of the antenna.(2)A novel wideband dual-band dual-polarized magneto-electric dipole antenna unit is proposed.By modifying the double-layered vibrator into a folded double-layer structure,a balun structure is added to the f-shaped feed line to better match the antenna impedance.The antenna operates at 1.54 GHz-2.87 GHz in the low frequency band,achieving 60%relative bandwidth(S11?-10 dB&S22?-10 dB);the high frequency band operates at 4.62 GHz-6.10 GHz,achieving a relative bandwidth of 27%(S11?-10 dB&S22?-10 dB).A box-shaped reflector is used to improve antenna gain and radiation pattern.The joint simulation optimization method is used to verify the S parameters of the antenna.(3)A genetic algorithm based MATLAB and HFSS joint simulation automatic optimization method is used to optimize a wideband dual-band dual-polarized magneto-electric dipole antenna.The antenna operates at 1.68 GHz-2.86 GHz in the low frequency band,achieving 52%relative bandwidth(S11?-10 dB&S22?-10 dB);the high frequency band operates from 3.15 GHz to 5.05 GHz,achieving a relative bandwidth of 46.3%(S11?-10 dB&S22?-10 dB).