Design of Dual-Band Bandpass Filters Based on Metal-Integrated Suspended Line Technology
Authors:
- 9 April 2024
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Microwave and Wireless Technology Letters
- Vol. 34 (6) , 615-618
Abstract
This letter introduces two dual-band bandpass filters (BPFs) based on novel metal-integrated suspended line (MISL) technology. These filters are designed to operate simultaneously in both the C -band and Ku -band based on dual-mode MISL resonators with low loss. Unlike traditional coaxial designs, the proposed MISL-based dual-band filters offer a compact footprint and allow for greater flexibility in design and fabrication. To improve the attenuation between the two passbands, the mixed electric and magnetic couplings have been used to achieve controllable between-band transmission zeros (TZs). To validate the concept, two dual-band BPFs are designed, fabricated, and measured. The measured results of the filters align well with the simulated results, confirming the compact size and low-loss characteristics of the proposed designs.Keywords
Funding Information
- Natural Science Foundation of China (62301358, 62341409)
- Tianjin University Innovation Fund (2023XYY-0038)
- Research Program (22JCQNJC00570)
This publication has 23 references indexed in Scilit:
- Dual-Narrowband/Wideband Filters Using Modified Coaxial Cavities With Large Frequency RatiosIEEE Journal of Microwaves, 2022
- Dual-Band and Wide Stopband Coaxial Filters Using Open-Circuited-Stub-Loaded ResonatorsIEEE Transactions on Circuits and Systems II: Express Briefs, 2020
- Design and Loss Reduction of Multiple-Zeros Dual-Band Bandpass Filter Using SISLIEEE Transactions on Circuits and Systems II: Express Briefs, 2020
- A Low-Cost Substrate Integrated Suspended Line Platform With Multiple Inner Boards and Its Applications in Coupled-Line CircuitsIEEE Transactions on Components, Packaging and Manufacturing Technology, 2020
- Trisection Bandpass Filter With Mixed Cross-Coupling and Different Paths for Signal PropagationIEEE Microwave and Wireless Components Letters, 2019
- High-Q-Factor Dual-Band Bandpass Filter and Filtering Switch Using Stub-Loaded Coaxial Resonators2019
- Dual-Band Coaxial Cavity Bandpass Filter With Helical Feeding Structure and Mixed CouplingIEEE Microwave and Wireless Components Letters, 2014
- Design of Tri-Band Filter Based on Stub Loaded Resonator and DGS ResonatorIEEE Microwave and Wireless Components Letters, 2010
- Novel Dual-Band Filter Incorporating Defected SIR and Microstrip SIRIEEE Microwave and Wireless Components Letters, 2008
- Cross-coupling in coaxial cavity filters-a tutorial overviewIEEE Transactions on Microwave Theory and Techniques, 2003