A novel CPW-SIW filter with wide stopband performance

作者：Yang, Yao; Ji, Xiaoyang; Zhai, Guohua; Ding, Jun

来源：2018 IEEE MTT-S International Wireless Symposium, IWS 2018, 2018-05-06 To 2018-05-09.

DOI：10.1109/IEEE-IWS.2018.8400816

• Coplanar wave-guide (CPW)
• CPW (Coplanar waveguide)
• Grounded via
• Operating frequency
• Out of band rejection
• Second harmonic resonance
• SIW (Substrate integrated waveguide)
• Wide stopband

In this paper, a novel planar bandpass filter with wide stopband suppression is proposed based on the combination of coplanar waveguide (CPW) and substrate integrated wave-guide (SIW) technologies. The wide stopband suppression is achieved by eliminating the second harmonic resonance of the CPW cavity with a centrally positioned metallic via, which plays a key role in the novel design. The proposed filter could obtain good out-of-band rejection (<-20 dB) from 18 GHz (1.5 f0, f0)is the center operating frequency of the filter) to 43 GHz (3.6/o). A demonstration filter is optimized, fabricated and measured, and the measured results agree well with the simulated ones, which validate the proposed method.

• 出版日期2018
• 单位华东师范大学