Multi-mode resonator for ultra-wide bandpass filter with good stopband performance

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Podshivalov, I.V.^1 ; Savishnikov, M.O.^2 ; Leksikov, A.A.^1 ; Dmitriev, D.D.^3 ; Kartsan, I.N.^4

Kirensky Institute of Physics SB RAS, Krasnoyarsk, Russia^1

Institute of Engineering Physics and Radio Electronics, Siberian Federal University, Krasnoyarsk

660041, Russia^2

Scientific and Educational Laboratory Systems of Navigation Control and Communication, Siberian Federal University, Krasnoyarsk

660041, Russia^3

Reshetnev Siberian State University of Science and Technology, Krasnoyarsky Rabochy Av. 31, Krasnoyarsk

660037, Russia^4

关键词: Dielectric substrates;    Higher mode;    Multimode resonators;    Pass bands;    Resonant mode;    Spurious bands;    Stopband performance;    Ultra-wide;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/5/052025/pdf
DOI  :  10.1088/1757-899X/537/5/052025

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

A multimode resonator is proposed, containing five resonant modes that are incorporated in the passband forming. The structure is based on a dielectric substrate suspended in a metallic case that allows solving problem of electromagnetic compatibility. Due to features of the resonator's structure, several higher modes do not excite that significantly improve the performance of the filter's stopband. The resonator advantages are proved on the ultra-wide bandpass filter (101%) with small overall size (0.11λ 0×0.06λ 0×0.03λ 0) and good stopband performance (first spurious band locates at 8 GHz, suppression is 80 dB).