An approach to miniaturize bandpass filter with half-wavelength resonators

作者：Li Xiuping^*; Wang Huisheng

来源：Microwave and Optical Technology Letters, 2013, 55(4): 890-894.

DOI：10.1002/mop.27465

• miniaturize
• bandpass filter
• shunt open stubs
• half-wavelength resonators

In this article, an approach to miniaturize bandpass filter with half-wavelength resonators is proposed.Theoretical analysis shows that the passband of the filter can be shifted to lower frequency by shunt open stubs. Furthermore, to prove its practical viability, three miniaturized bandpass filters with T-shape, comb-shape, and interdigital-like shunt open stubs are designed, fabricated, and compared. The filter with interdigital-like shunt open stubs has the minimized size 13.3 x 8.5 mm2 and maximum insertion loss around 1.7 dB. The simulated and measured results agree well.

• 出版日期2013-4
• 单位北京大学