Design of wide-band bandpass filter using composite right/left-handed transmission line structure

作者：Ren Baoping^*; Liu Haiwen; Guan Xuehui; Wen Pin; Xiao Xiang; Ma Zhewang

来源：Active and Passive Electronic Components, 2016, 2016: 1-5.

DOI：10.1155/2016/6532010

• Composite right/left-handed transmission lines
• Design Methodology
• Lc circuit models
• Measured results
• Microstrip bandpass filters
• Planar structure
• Wide band filter
• Wide-band

A wide-band microstrip bandpass filter (BPF) based on the improved composite right/left-handed transmission line (CRLH-TL) structure is presented in this paper. Compared to the traditional CRLH-TL with via hole, the improved one is an all-planar structure, which owns the advantage of fabrication and loss. The equivalent lossless LC circuit model of the proposed structure is established. EM software Sonnet is adopted to design the wide-band filter with bandwidth of 1.4 GHz (from 1.9 GHz to 3.3 GHz). The circuit occupies only 20.6 ×12.8 mm2. Finally, the fabrication and measurement are implemented. A good agreement between simulation and measured results verifies the validity of the design methodology.

• 出版日期2016