柔性天线的异质基板设计、制作及测试

文中提出了一种可应用于柔性天线的异质基板，并使用PolyJet 3D打印机进行异质基板的制造。异质基板由均匀分布在柔性材料Agilus内的数字型ABS组合而成，通过改变数字型ABS的体积占比，可以调整异质基板的机械性能和介电性能。首先，通过有效介质近似理论估算异质基板的介电特性，设计异质基板及不同占比数字型ABS的尺寸。随后，根据设计的模型通过PolyJet进行混合打印并通过环形谐振器理论进行异质基板介电性能的表征。最后，在异质基板上制造贴片天线并测试了不同弯曲条件下天线的性能。

Design, Fabrication and Testing of Heterogeneous Substrates for Flexible Antennas

This paper proposes a heterogeneous substrate that can be applied to flexible antennas. The substrate is fabricated using PolyJet 3D printer. Heterogeneous substrates are composed of digital ABSs which are evenly distributed in the flexible material Agilus. By changing the volume ratio of the digital ABS, the mechanical and dielectric properties of the heterogeneous substrate can be adjusted. Firstly, the dielectric properties of the heterogeneous substrate are estimated by the effective medium approximation theory, and the dimensions of the heterogeneous substrate and the digital ABSs with different volume ratio are designed. Then, the hybrid printing is carried out using PolyJet according to the designed model, and the dielectric properties of the heterogeneous substrate are characterized through the ring resonator theory. Finally, a patch antenna is fabricated on the heterogeneous substrate and the performance of the antenna is tested under different bending conditions.