为了获得高增益小尺寸天线,通过在基片集成波导上引入二阶Hilbert分形缝隙,提出了一种新型复合左右手传输线.在等效电路模型的基础上,利用HFSS和Serenade软件对该传输线的电路参数进行了提取;利用MATLAB语言给出了该传输线的色散曲线;最后,由该传输线设计了终端短路的缝隙天线.实验结果表明:该天线馈电网络简单,工作在复合左右手传输线的-1阶模式上,比之前报道的复合左右手谐振天线具有更小的电尺寸和更高的增益.由于这些性能,使得该天线可以用于无线通信系统中.
A novel composite right/left-handed transmission line was proposed by inserting 2-iteration Hilbert-fractal slots into a substrate integrated waveguide,in order to design compact antenna with a high peak gain.The equivalent circuit for the proposed transmission line was shown,and the circuit parameters were extracted.The dispersion diagram of the transmission line was achieved through using MATLAB.Then,a short-ended slot antenna was designed and fabricated based on the transmission line.The antenna working on the 1st order has a simple feeding network.It provides smaller electronic size and higher peak gain than reported composite right/left-handed resonant antennas.These prominent performances make it good candidate for modern wireless communication system.