This brief presented a wideband bandstop filter (WBBSF) with compact size and five transmission zeros, which is based on a symmetrical three-layer ring structure comprising equivalently high-impedance phase-shift section, coupled lines, and short-stubs. The WBBSF based on multi-mode resonators can be directly synthesized from the desired rejection, and its transmission zeros and bandwidth are controlled by only two characteristic impedances. For validation, the calculations, simulations, and measurements have also been done for wideband bandstop filter. Good agreements among the calculated, simulated, and measured results are observed.
|Journal||IEEE Transactions on Circuits and Systems II: Express Briefs|
|Early online date||6 Jan 2021|
|Publication status||E-pub ahead of print - 6 Jan 2021|
- Coupled stub-loaded resonator
- directly controlled rejection
- Equivalent circuits
- equivalently high-impedance phase-shift section
- Filtering theory
- odd-and even-mode analysis
- Shunts (electrical)
- wideband bandstop filter.
ASJC Scopus subject areas
- Electrical and Electronic Engineering