本文针对这一实际应用问题，优化设计了基于笛卡尔环形定理的分形（自相似）结构垂直单极天线，从本质上解决了空气阻力的影响。
For such applications , some fractal or self-similar geometries based on Descartes Circle Theorem are optimized for UWB antennas by overcoming the natural problem of junction points of these designs .
笛卡尔定理