The new wideband microstrip balun proposed in this paper is the first balun that adopts two transmission lines, Coplanar Waveguide Ground (CPWG) and Coupled Strip Line (CSL).

• 本论文首次应用接地共面波导(Coplanar Waveguide Ground，CPWG)和耦合微带线(Coupled Strip Line，CSL)设计了一种新型的宽频带微带巴伦，该类型微带巴伦可以在低相对介电常数的介质板上制作，具有结构紧凑、成本低廉、制作简单的特点。