介绍了一种新型混合左右手(composite right/left-handed,CRLH)结构,该传输线结构具有负的磁导率和负的介电常数。与常规的CRLH结构相比,该结构以更小的插损、更大的带宽、更小的尺寸实现了左手特性。本文应用该CRLH结构设计了一个零阶...介绍了一种新型混合左右手(composite right/left-handed,CRLH)结构,该传输线结构具有负的磁导率和负的介电常数。与常规的CRLH结构相比,该结构以更小的插损、更大的带宽、更小的尺寸实现了左手特性。本文应用该CRLH结构设计了一个零阶谐振带通滤波器,它由三个CRLH零阶谐振单元组成,具有谐振频率与电路尺寸无关的特性,其计算仿真和实验测量结果吻合很好。实验测量结果显示:CRLH带通滤波器通带位于2.5 GHz,具有0.8 d B的插入损耗和25%(500 MHz)的3 d B带宽。这种CRLH传输线滤波器在无线电通信、导航等多频带微波系统中具有良好的实用价值。展开更多
The nonlinear properties of lattice network-based（LNB） composite right-/left-handed transmission lines（CRLH TLs）with nonlinear capacitors are experimentally investigated.Harmonic generation,subharmonic generation,...The nonlinear properties of lattice network-based（LNB） composite right-/left-handed transmission lines（CRLH TLs）with nonlinear capacitors are experimentally investigated.Harmonic generation,subharmonic generation,and parametric excitation are clearly observed in an unbalanced LNB CRLH TL separately.While the balanced design of the novel nonlinear TL shows that the subharmonic generation and parametric processes can be suppressed,and almost the same power level of the higher harmonics can be achieved over a wide bandwidth range,which are difficult to find in conventional CRLH TLs.展开更多
文摘介绍了一种新型混合左右手(composite right/left-handed,CRLH)结构,该传输线结构具有负的磁导率和负的介电常数。与常规的CRLH结构相比,该结构以更小的插损、更大的带宽、更小的尺寸实现了左手特性。本文应用该CRLH结构设计了一个零阶谐振带通滤波器,它由三个CRLH零阶谐振单元组成,具有谐振频率与电路尺寸无关的特性,其计算仿真和实验测量结果吻合很好。实验测量结果显示:CRLH带通滤波器通带位于2.5 GHz,具有0.8 d B的插入损耗和25%(500 MHz)的3 d B带宽。这种CRLH传输线滤波器在无线电通信、导航等多频带微波系统中具有良好的实用价值。
基金supported by the National Natural Science Foundation of China(Grant Nos.61201030,60990322,and 60990320)the China Postdoctoral Science Foundation(Grant No.2012M521048)the Collegiate Natural Science Fund of Jiangsu Province,China(Grant No.12KJB140010)
文摘The nonlinear properties of lattice network-based（LNB） composite right-/left-handed transmission lines（CRLH TLs）with nonlinear capacitors are experimentally investigated.Harmonic generation,subharmonic generation,and parametric excitation are clearly observed in an unbalanced LNB CRLH TL separately.While the balanced design of the novel nonlinear TL shows that the subharmonic generation and parametric processes can be suppressed,and almost the same power level of the higher harmonics can be achieved over a wide bandwidth range,which are difficult to find in conventional CRLH TLs.
基金Supported by the DFGInternational Research Training Group,Materials and Concepts for Advanced Interconnectsthe Foundation of National Key Laboratory of Micro/Nano Fabrication Technology(Grant No .9140C7903060706)Science and Technology Commission of Shanghai Municipality(Grant No .05JC14061)
