A Class of Box-Like Bandpass Filters With Wide Stopband Based on New Dual-Mode Rectangular SIW Cavities
- 23 November 2020
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 69 (1), 101-110
- https://doi.org/10.1109/tmtt.2020.3037497
Abstract
This article proposes a new class of box-like substrate integrated waveguide (SIW) filters with wide stopband. First, a two-pole doublet bandpass filter with one finite-transmission zero (FTZ) is proposed using a new planar dual-mode rectangular SIW cavity, which is realized by ₂₀₁ and TE₁₀₃ modes. TE₁₀₂, TE₂₀₂, and TE₁₀₄ modes are suppressed intrinsically by arranging feeding lines at the horizontal centerline of the dual-mode SIW cavity. Then, a four-pole box-section filter with one FTZ is proposed using one dual-mode and two single-mode rectangular SIW cavities, and the two single-mode cavities have different width-length ratios to further improve the stopband performance. To further improve the cutoff skirt, a new design method for five-pole quasi-elliptic SIW filter is proposed, which is achieved by the four-pole filter loaded by one single-mode SIW cavity. Some design examples with the center frequency of 10 GHz are presented to verify the performance of the proposed dual-mode SIW filters and the design method.Keywords
This publication has 28 references indexed in Scilit:
- Ultra‐compact highly selective quasi‐elliptic filters based on combining dual‐mode SIW and coplanar waveguides in a single cavityIET Microwaves, Antennas & Propagation, 2018
- Novel Dual-Mode Bandpass Filters Based on SIW Resonators under Different BoundariesIEEE Microwave and Wireless Components Letters, 2016
- Dual-Mode Substrate Integrated Waveguide Filter With Flexible ResponseIEEE Transactions on Microwave Theory and Techniques, 2016
- Multilayer Substrate Integrated Waveguide (SIW) Filters With Higher-Order Mode SuppressionIEEE Microwave and Wireless Components Letters, 2016
- Highly‐selective pseudoelliptic filters based on dual‐mode substrate integrated waveguide resonatorsElectronics Letters, 2016
- Novel dual-mode substrate integrated waveguide (SIW) bandpass filterPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2016
- Compact Dual-Mode Substrate Integrated Waveguide Coaxial Cavity for Bandpass Filter DesignIEEE Microwave and Wireless Components Letters, 2016
- Design and Multiphysics Analysis of Direct and Cross-Coupled SIW Combline Filters Using Electric and Magnetic CouplingsIEEE Transactions on Microwave Theory and Techniques, 2015
- A Dual-Mode Substrate Integrated Waveguide Filter With Controllable Transmission ZerosIEEE Microwave and Wireless Components Letters, 2015
- Synthesis of advanced microwave filters without diagonal cross-couplingsIEEE Transactions on Microwave Theory and Techniques, 2002