一种频率可重构短波宽带鞭状天线设计
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摘要
针对目前10 m短波鞭状天线存在的低频段增益和效率低的问题,基于入侵性野草(invasive weed optimization,IWO)算法和分波段加载匹配网络重构技术,设计了一款分波段短波宽带鞭状天线;然后,采用IWO算法对每个分波段内天线的加载网络和匹配网络分别进行了优化,设置了不同标称阻抗、传输线变压器变比以及下加载点的位置;最后,进行了仿真分析,结果表明:所提方法使低频段天线增益最多提高了6 d B,有效解决了该天线低频段的增益缺陷。
The research is expanded from the problems of small gain and low efficiency at low frequency in 10 m high frequency( HF) broadband whip antenna. To begin with,a sub-band HF broadband whip antenna is designed based on the sub-band loading,matching and reconfiguration technology,as well as invasive weed optimization( IWO) algorithm. Then,the loading and matching network of the antenna in each sub-band is optimized through the IWO algorithm. As it turns out,by changing the nominal impedance,the ratio of transmission-line transformer and the location of lower loading point,the antenna gain at low-frequency is increased by 6 dB,effectively solving the gain defect in low frequency band of the antenna.
The research is expanded from the problems of small gain and low efficiency at low frequency in 10 m high frequency( HF) broadband whip antenna. To begin with,a sub-band HF broadband whip antenna is designed based on the sub-band loading,matching and reconfiguration technology,as well as invasive weed optimization( IWO) algorithm. Then,the loading and matching network of the antenna in each sub-band is optimized through the IWO algorithm. As it turns out,by changing the nominal impedance,the ratio of transmission-line transformer and the location of lower loading point,the antenna gain at low-frequency is increased by 6 dB,effectively solving the gain defect in low frequency band of the antenna.
引文
[1]宋铮,张建华,黄冶.天线与电波传播[M].西安:西安电子科技大学出版社,2003.
[2] PANDEL J,FETTEWIS A. Broadband matching using parametric representations[J]. IEEE International Symposium on Circuits and Systems,1985,36:143-149.
[3]柳超,刘其中,梁玉军,等.舰用短波宽带鞭状天线研究[J].电波科学学报,2006,21(6):955-957.LIU Chao,LIU Qi-zhong,LIANG Yu-jun,et al. Design of broadband shipboard whip-type antenna at high frequency band[J]. Chinese Journal of Radio Science,2006,21(6):955-957.(in Chinese)
[4] MEHRABIAN A R,LUCAS C. A novel numerical optimization algorithm inspired from weed colonization[J]. Ecological Informatics,2006,1(4):355-366.
[5] MALLAHZADEH A R,ORAIZI H,DAVOODI-RAD Z. Application of the invasive weed optimization technique for antenna configurations[J]. Progress in Electromagnetics Research,2008,79:137-150.
[6] KARIMKASHI S,KISHK A A. Invasive weed optimization and its features in electromagnetics[J].IEEE Transactions on Antennas and Propagation,2010,58(4):1269-1278.
[7]王衡峰,柳超,吴华宁.基于入侵性野草算法的短波宽带鞭状天线优化[J].无线电工程,2016,46(11):63-67.WANG Heng-feng,LIU Chao,WU Hua-ning. HF wideband whip antenna optimization based on invasive weed optimization algorithm[J]. Radio Engineering,2016,46(11):63-67.(in Chinese)
[8]吕英华.计算电磁学的数值方法[M].北京:清华大学出版社,2006.
[9]朱守正,安同一.天线理论与设计[M].北京:人民邮电出版社,2006.
[10]张健.短波天线宽带可重构技术的研究[D].西安:西安电子科技大学,2013.
[11] HAUPT R L,LANAGAN M. Reconfigurable antennas[J]. IEEE Antennas and Propagation Magazine,2013,55:49-61.
[2] PANDEL J,FETTEWIS A. Broadband matching using parametric representations[J]. IEEE International Symposium on Circuits and Systems,1985,36:143-149.
[3]柳超,刘其中,梁玉军,等.舰用短波宽带鞭状天线研究[J].电波科学学报,2006,21(6):955-957.LIU Chao,LIU Qi-zhong,LIANG Yu-jun,et al. Design of broadband shipboard whip-type antenna at high frequency band[J]. Chinese Journal of Radio Science,2006,21(6):955-957.(in Chinese)
[4] MEHRABIAN A R,LUCAS C. A novel numerical optimization algorithm inspired from weed colonization[J]. Ecological Informatics,2006,1(4):355-366.
[5] MALLAHZADEH A R,ORAIZI H,DAVOODI-RAD Z. Application of the invasive weed optimization technique for antenna configurations[J]. Progress in Electromagnetics Research,2008,79:137-150.
[6] KARIMKASHI S,KISHK A A. Invasive weed optimization and its features in electromagnetics[J].IEEE Transactions on Antennas and Propagation,2010,58(4):1269-1278.
[7]王衡峰,柳超,吴华宁.基于入侵性野草算法的短波宽带鞭状天线优化[J].无线电工程,2016,46(11):63-67.WANG Heng-feng,LIU Chao,WU Hua-ning. HF wideband whip antenna optimization based on invasive weed optimization algorithm[J]. Radio Engineering,2016,46(11):63-67.(in Chinese)
[8]吕英华.计算电磁学的数值方法[M].北京:清华大学出版社,2006.
[9]朱守正,安同一.天线理论与设计[M].北京:人民邮电出版社,2006.
[10]张健.短波天线宽带可重构技术的研究[D].西安:西安电子科技大学,2013.
[11] HAUPT R L,LANAGAN M. Reconfigurable antennas[J]. IEEE Antennas and Propagation Magazine,2013,55:49-61.