In this paper,an antenna array composed of circular array and orthogonal linear array is proposed by using the design of long and short baseline“orthogonal linear array”and the circular array ambiguity resolution de...In this paper,an antenna array composed of circular array and orthogonal linear array is proposed by using the design of long and short baseline“orthogonal linear array”and the circular array ambiguity resolution design of multi-group baseline clustering.The effectiveness of the antenna array in this paper is verified by sufficient simulation and experiment.After the system deviation correction work,it is found that in the L/S/C/X frequency bands,the ambiguity resolution probability is high,and the phase difference system error between each channel is basically the same.The angle measurement error is less than 0.5°,and the positioning error is less than 2.5 km.Notably,as the center frequency increases,calibration consistency improves,and the calibration frequency points become applicable over a wider frequency range.At a center frequency of 11.5 GHz,the calibration frequency point bandwidth extends to 1200 MHz.This combined antenna array deployment holds significant promise for a wide range of applications in contemporary wireless communication systems.展开更多
为了解决车载通信天线工作频带窄、尺寸大等缺点,文中提出了一款应用于车载鲨鱼鳍外壳的新型小型化、宽带MIMO天线。为了实现天线的宽带特性,充分利用了印制单极子天线易于引入多谐振的特点,首先通过合理的尺寸设计,将单极子天线谐振频...为了解决车载通信天线工作频带窄、尺寸大等缺点,文中提出了一款应用于车载鲨鱼鳍外壳的新型小型化、宽带MIMO天线。为了实现天线的宽带特性,充分利用了印制单极子天线易于引入多谐振的特点,首先通过合理的尺寸设计,将单极子天线谐振频率设计至工作频段中;然后,使用缝隙加载技术,增加天线谐振模式数量并改善天线阻抗匹配特性,拓宽了天线带宽并实现了天线的小型化。为了验证天线实际性能,将天线安装于鲨鱼鳍外壳中进行了测试。结果表明,该天线可以覆盖824~5 000 MHz的频段范围,驻波比均小于3,增益最低1.9 d Bi、最高6.2 d B,效率均高于49.5%、最高达89.2%。该天线可满足车载通信系统对天线的宽带化和小型化要求。展开更多
基于汽车防撞雷达高精度、轻型化和小型化等要求,提出了一种应用于车载防撞雷达前端的微带阵列天线设计。天线阵采用串联馈电方式,通过微带传输线的阻抗匹配设计以及天线单元的幅度和相位优化设计,使得天线阵在23.4~24.4 GHz频带内输入...基于汽车防撞雷达高精度、轻型化和小型化等要求,提出了一种应用于车载防撞雷达前端的微带阵列天线设计。天线阵采用串联馈电方式,通过微带传输线的阻抗匹配设计以及天线单元的幅度和相位优化设计,使得天线阵在23.4~24.4 GHz频带内输入端口反射参数小于-10 d B,天线主瓣偏角30°,副瓣电平小于-10 d B,天线波束角度62°,使得安装于汽车侧方的防撞雷达实现对汽车行驶方向目标的探测。整部天线阵具有轻型化、低副瓣和小尺寸的特点,满足汽车雷达对天线性能的指标要求。展开更多
文摘In this paper,an antenna array composed of circular array and orthogonal linear array is proposed by using the design of long and short baseline“orthogonal linear array”and the circular array ambiguity resolution design of multi-group baseline clustering.The effectiveness of the antenna array in this paper is verified by sufficient simulation and experiment.After the system deviation correction work,it is found that in the L/S/C/X frequency bands,the ambiguity resolution probability is high,and the phase difference system error between each channel is basically the same.The angle measurement error is less than 0.5°,and the positioning error is less than 2.5 km.Notably,as the center frequency increases,calibration consistency improves,and the calibration frequency points become applicable over a wider frequency range.At a center frequency of 11.5 GHz,the calibration frequency point bandwidth extends to 1200 MHz.This combined antenna array deployment holds significant promise for a wide range of applications in contemporary wireless communication systems.
文摘为了解决车载通信天线工作频带窄、尺寸大等缺点,文中提出了一款应用于车载鲨鱼鳍外壳的新型小型化、宽带MIMO天线。为了实现天线的宽带特性,充分利用了印制单极子天线易于引入多谐振的特点,首先通过合理的尺寸设计,将单极子天线谐振频率设计至工作频段中;然后,使用缝隙加载技术,增加天线谐振模式数量并改善天线阻抗匹配特性,拓宽了天线带宽并实现了天线的小型化。为了验证天线实际性能,将天线安装于鲨鱼鳍外壳中进行了测试。结果表明,该天线可以覆盖824~5 000 MHz的频段范围,驻波比均小于3,增益最低1.9 d Bi、最高6.2 d B,效率均高于49.5%、最高达89.2%。该天线可满足车载通信系统对天线的宽带化和小型化要求。
文摘基于汽车防撞雷达高精度、轻型化和小型化等要求,提出了一种应用于车载防撞雷达前端的微带阵列天线设计。天线阵采用串联馈电方式,通过微带传输线的阻抗匹配设计以及天线单元的幅度和相位优化设计,使得天线阵在23.4~24.4 GHz频带内输入端口反射参数小于-10 d B,天线主瓣偏角30°,副瓣电平小于-10 d B,天线波束角度62°,使得安装于汽车侧方的防撞雷达实现对汽车行驶方向目标的探测。整部天线阵具有轻型化、低副瓣和小尺寸的特点,满足汽车雷达对天线性能的指标要求。
