Dual-Band Coupled-Line Bandpass Filter with Independently Tunable Bandwidths

• 作 者: Yongle Wu Lixia Nan Lingxiao Jiao Weimin Wang Yuanan Liu
• 机 构: Beijing Key Laboratory of Work Safety Intelligent Monitoring,School of Electronic Engineering,Beijin
• 出 处: 中国通信
• 发表日期: 2016年09期
• 关键词: filters tunable dual band coupled line

This paper reports a novel dual-band coupled-line bandpass filter.Comprising a quadruple-mode coupled-line resonator,this proposed filter could filter signals on two frequency bands.After introducing two varactors,one of the four resonances could be continuously altered by changing the capacitance of the varactors,thus the two frequency bandwidths could be independently tunned.In this paper,the detailed explanation for its operation is given,and the agreement between the expected and practical performance sufficiently confirms the robustness and effectiveness of this proposed filter.

This paper reports a novel dual-band coupled-line bandpass filter. One implementation of quadruple-mode coupled-line resonator, this proposed filter could filter signals on two frequency bands. One after the two resonances could be continuously altered by changing the capacitance of the varactors, thus the two frequency bandwidths could be independently tunned. In this paper, the detailed explanation for its operation is given, and the agreement between the expected and practical performance adequ confirms the robustness and effectiveness of this proposed filter.