Vol. 105

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2022-06-23

Dual-Band Filter Power Divider with Controllable Transmission Zero Based on Multimode Resonator

By Chuanyun Wang, Xiqiang Zhang, Tingting Xia, Yonghua Zhang, and Qilei Fan
Progress In Electromagnetics Research Letters, Vol. 105, 9-16, 2022
doi:10.2528/PIERL22040901

Abstract

A novel dual-band filter power divider (DB-FPD) with controllable transmission zeros (TZs) is designed using a slotline multimode resonator (SLMR) in this letter. Using the stub loading technology, each resonator mode of the SLMR can be easily controlled. Accordingly, a dual-band bandpass filter is realized. Four TZs are generated due to the loaded stubs on the SLMR and feeding network, which can improve the out-of-band selectivity. Finally, without introducing additional circuits, a DB-FPD with good performance is realized. For verification, a prototype operating at 2.01 and 4.79 GHz is fabricated and measured. The measured results are basically consistent with simulated ones. The 3-dB fractional bandwidths are 29.7% (1.72~2.32 GHz) and 7.99% (4.58~4.96 GHz), respectively, and the isolation in each band is better than 14 dB.

Citation


Chuanyun Wang, Xiqiang Zhang, Tingting Xia, Yonghua Zhang, and Qilei Fan, "Dual-Band Filter Power Divider with Controllable Transmission Zero Based on Multimode Resonator," Progress In Electromagnetics Research Letters, Vol. 105, 9-16, 2022.
doi:10.2528/PIERL22040901
http://www.jpier.org/PIERL/pier.php?paper=22040901

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