Design of compact wideband QMSIW band-pass filter with improved stopband

作者：Wu Yu Dan; Li Guo Hui^*; Yang Wei; Yang Xue Xia

来源：Progress in Electromagnetics Research Letters, 2017, 65: 75-79.

DOI：10.2528/pierl16110301

• Current direction
• Fourth order
• H-shaped slots
• Improved stopband
• Single layer
• Size reductions
• Stopband attenuation
• Wide stopband

A compact wideband quarter mode substrate integrated waveguide (QMSIW) band-pass filter with wide stopband performance is presented in this paper. Compared with conventional SIW cavity, the QMSIW cavity occupies only one fourth of the size. A meandered H-shaped slot is etched on the cavity to change the current direction for size reduction. In order to prove the validity, a compact fourth-order band-pass filter with wide stopband is fabricated on a single-layer Rogers RT/Duroid 5880 substrate. The measured in-band insertion loss is only 1.02 dB including the loss caused by two connectors, and the stopband attenuation in the frequency band from 4.02 GHz to 12.63 GHz is better than 25 dB. The whole size of the filter is only 20.6 ×26.8 ×0.254 mm3.

• 出版日期2017
• 单位上海大学