【作者】：Zizhuo Sun,Xiaolong Wang,Kun Li
【题目】：A Switchable Bandpass Filter for B road band, Dual Band and Tri Band Operations
【关键词】：Bandpass filter (BPF), broadband, dual-band, switchable filter, tri-band.
【版面信息】：文章
摘要:
In this brief, a novel microstrip switchable bandpass filter (BPF) is presented. By switching RF p-i-n diodes on/off, the proposed topology could provide three different filtering states: broadband bandpass filter (BBPF), dual-band bandpass filter (DBPF) and tri-band bandpass filter (TBPF). For each state, the relationship between bandwidths and return losses are newly analyzed by proposed algorithm, then the design charts can be easily summarized. In order to improve selectivity and stopband rejection, two cascaded proposed topologies are also considered and discussed briefly. For demonstration, two switchable circuits are designed, fabricated and measured in the experiment. Simulated and measured results are matched very well.
