A NOVEL MICROSTRIP BAND-PASS FILTER BASED ON HOLE COUPLING STRUCTURE

作者：Yuan, Yan^*; Xu, Jun; Xu, Yan-Qing; Zhang, Xiao-Chuan

来源：Microwave and Optical Technology Letters, 2011, 53(12): 2811-2814.

DOI：10.1002/mop.26373

• hole-coupled band pass filter
• metallized post arrays
• microstrip line

A novel C-band hole-coupled bandpass filter with metallized post (or via-hole) arrays directly embedded in middle of the microstrip line is presented in this letter. The proposed filter removes via-hole arrays embedded along waveguide section from the half-mode substrate integrated waveguide filter, while the new concept simplifies the structure of previous filter. Simulated and experimental results show that the proposed filter of this paper has good performances of low insertion loss, return loss, and better rejection characteristics. The insertion loss of measured four-pole filter is about 0.8 dB, and the return loss is better than -25 dB in the whole passband. Keeping the advantages of excellent performances, the proposed filter can be constructed more conveniently and is suitable for low-cost planar circuit.

• 出版日期2011-12
• 单位电子科技大学