[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 基于矩形开口谐振环的低频天线阻抗变换器- A Band Notch Impedance Transformer Based on Split Rectangular Loop in Low Frequency
文章摘要
唐尧,曹祥玉,高军.基于矩形开口谐振环的低频天线阻抗变换器[J].空军工程大学学报:自然科学版,2019,20(1):84-89
基于矩形开口谐振环的低频天线阻抗变换器
A Band Notch Impedance Transformer Based on Split Rectangular Loop in Low Frequency
  
DOI:
中文关键词: 阻抗变换器  矩形开口环  陷波特性  低频
英文关键词: impedance transformer  split rectangular loop  band notch function  low frequency
基金项目:国家自然科学基金(61271100;61471389;61501494;61671464)
作者单位
唐尧,曹祥玉,高军 空军工程大学信息与导航学院,西安,710077 
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中文摘要:
      设计了一种低频波段使用的新型阻抗变换器,该阻抗变换器在0.1~3 GHz频率范围内实现由输入150 Ω到输出50 Ω的阻抗匹配。矩形开口环结构具有良好的谐振特性,通过在阻抗变换器底部开矩形开口环的方法实现单一频点的陷波特性。新型阻抗变换器其原理是基于巴伦阻抗变换器的阻抗转换特性和矩形开口环结构的谐振特性,仿真结果显示新型阻抗变换器在1.1 GHz频点与2.2 GHz频点的S12参数均在-15 dBi以下,S11参数均在-0.5 dBi以上。经过仿真验证,随着矩形开口环结构长度与位置的变化,可以实现陷波频点在0.1~3 GHz频率范围内自主调控。文中采用HFSS软件进行仿真优化,绘出S参数图,实物测试结果验证了设计结构的有效性。陷波阻抗变换器作为天线匹配终端,在射频信号采集、超宽带天线及阵列阻抗匹配等领域有很好的军事应用前景。
英文摘要:
      This paper designs a novel impedance transformer used for low frequency, performing 150 Ω at the input to 50 Ω at the output within the range of 0.1 GHz to 3 GHz. The novel impedance transformer is characterized by band notch function through loading the technology of curving split rectangular loop with good resonance. The principle is based on the impedance transmission characteristics of Balun impedance transformer and the resonance characteristics of split rectangular loop. The results indicate that the S12 parameters are below minus 15 dBi and the S11 parameters are above minus 0.5 dBi.And the band notch frequency point can be controlled by changing the length and location of the split rectangular loop. The HFSS software is utilized for modeling and optimizing parameters. The results of S parameters and fabricated sample measurements indicate that the design is reasonable. Taking band notch impedance transformer as the antennas matching terminal, there is a good prospect in application in the fields of radiation frequency harvest and the matching of extremely wideband antenna arrays.
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