向乾尹

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办公地点:成都市郫都区西南交通大学犀浦校区九教

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所在单位:信息科学与技术学院

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团队在可重构射频通信电路方面的成果被SCI、EI期刊IEEE TCASII录用

A 5th-order   Constant Bandwidth Tunable Bandpass Filter with Two Cascaded Trisection Structures

 

Qianyin Xiang, Member, IEEE, Hongchun Sun, Mingye Fu, Qiuyan Jin, Quanyuan Feng, Senior   Member, IEEE

 Abstract—A novel 5th-order cross-coupled tunable bandpass filter based on full-wavelength tunable resonator with four independent coupling regions, including two electric and two magnetic coupling regions is proposed. The slop of the coupling coefficients versus the resonant frequency can be pre-defined to meet the requirement of tunable bandpass filter with constant bandwidth. The 5th-order constant bandwidth cross-coupled bandpass filter is with two cascaded trisection (CT) structures, including one all electric type CT cell and one all magnetic type CT cell, and two CT cells share a common resonator to reduce the size. Therefore, two transmission zeros are generated besides the passband for improving the frequency selectivity. The measurement shows that, the central frequency can be tuned from 1.48 GHz to 1.88 GHz with a -3 dB bandwidth of 92±1.1 MHz, and the -20dB/-3dB rectangle factor is 1.66~1.76.

 

Q. Xiang, H. Sun, M. Fu, Q. Jin and Q. Feng, "A 5th-Order Constant Bandwidth Tunable Bandpass Filter With Two Cascaded Trisection Structures," in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 70, no. 1, pp. 126-130, Jan. 2023, doi: 10.1109/TCSII.2022.3208601.?

 

 

 



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