A novel quadruple-mode cavity resonator filter with wide spurious-free window

作者：Qian, Lu; Chu, Qing-Xin

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

DOI：10.1109/IEEE-IWS.2018.8400925

• Cavity
• Cavity filters
• Hardware system
• spurious
• spurious improvement

This paper proposes a novel quadruple-mode cavity resonator and filter. The cavity resonator includes four modes which are similar in frequency and easily controlled, and 20% volume saving can be achieved while maintaining the similar unloaded Q-factor value of the conventional designs. Furthermore, the electric field of the proposed modes is mainly composed of horizontal components, so the four modes can be simulated by using a pair of coupling probes, and the wide spurious-free window is realized. In final, to demonstrate the new resonator technology, a four-pole filter with 40 MHz wide filter at 2.56GHz is simulated and fabricated, and the measured S-parameter frequency response have demonstrated the significant improvement in spurious performance.

• 出版日期2018
• 单位华南理工大学