基于印刷振子和微帶貼片的雙極化天線單元研究
doi: 10.11999/JEIT160758
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2.
(南京航空航天大學(xué)電子信息工程學(xué)院 南京 210016) ②(中國航空工業(yè)濟南特種結(jié)構(gòu)研究所高性能電磁窗航空科技重點實驗室 濟南 250031) ③(哈爾濱工業(yè)大學(xué)(威海)信息與電氣工程學(xué)院 威海 264209)
航空科學(xué)基金項目(20131837001)
Dual-polarized Antenna Based on Printed Dipole and Microstrip Patch
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2.
(Department of Electronic and Information Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)
The Science Foundation of Aeronautics of China (20131837001)
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摘要: 該文基于互補天線的原理,研究了一種基于印刷振子和圓形微帶貼片的雙極化天線單元,其中印刷振子為電流輻射源,圓形微帶貼片等效為磁流輻射源,它們分別組成了兩個極化端口,在空間形成雙極化的輻射場。采用全波電磁仿真技術(shù)對該天線結(jié)構(gòu)進行了電磁仿真和優(yōu)化設(shè)計,仿真結(jié)果表明,在工作頻帶范圍內(nèi),所設(shè)計的雙極化天線的隔離度達到22 dB以上,在主輻射方向的交叉極化電平低于-20 dB。加工了雙極化天線單元并進行了測試,其電壓駐波比、端口隔離度和交叉極化電平均滿足雙極化天線的技術(shù)指標(biāo)要求,驗證了該雙極化天線設(shè)計的可行性。Abstract: Based on the principle of the complementary antenna, a kind of dual-polarized antenna element is studied, which combines the printed dipole antenna and circular microstrip patch. The printed dipole antenna is the electric current radiation source and the circular microstrip patch is the magnetic current radiation source. The two polarization ports are composed of the electronic and magnetic radiation resource, respectively, which radiate dual polarized electromagnetic fields. The electromagnetic simulation and optimization design of the dual-polarized antenna are carried out using the full wave electromagnetic simulation technique, and the simulation results show that the isolation of the designed antenna is above 22 dB and the cross polarization level is lower than -20 dB at the boresight direction within the operational frequency range. The measured results of the fabricated antenna indicate that the Voltage Standing Wave Ratio (VSWR), port isolation degree and the cross polarization level can satisfy technical requirements.
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