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[IEEE 2019 14th European Microwave Integrated Circuits Conference (EuMIC) - Paris, France (2019.9.30-2019.10.1)] 2019 14th European Microwave Integrated Circuits Conference (EuMIC) - Tune-All Substrate-Integrated-Waveguide (SIW) Bandpass Filters
摘要： This paper reports on a new type of substrate-integrated-waveguide (SIW) bandpass filters (BPFs) with multiple levels of transfer function adaptivity. They are based on series-cascaded in-line coaxial resonators and a coaxial-resonator-based transmission-zero (TZ) generation section. The proposed architecture allows the realization of the following reconfigurable characteristics: i) tunable center frequency with either constant absolute bandwidth (BW) or constant fractional bandwidth (FBW), ii) tunable BW, and iii) an intrinsically switched-off response. Alternative realization schemes using parallel and series resonators are discussed with the purpose of improving the stopband performance. For proof-of-concept demonstration purposes an L-band SIW-based BPF prototype was designed, manufactured and measured. It exhibited the following RF performance characteristics. Center frequency tuning between 1.24 and 1.8 GHz (1.5: tuning ratio), BW tuning between 190 and 78 MHz (2.44:1 tuning ratio) and intrinsic switching-off with > 30 dB of isolation in the range between 0.75 and 2.25 GHz.
关键词： band-pass filter (BPF),cavity filter,reconfigurable filter,tunable frequency,tunable filter,tunable bandwidth,substrate-integrated-waveguide (SIW) filter
更新于2025-09-16 10:30:52
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[IEEE 2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) - Atlanta, GA, USA (2019.7.7-2019.7.12)] 2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium) - Terahertz Plasmonic Metamaterial Based Multi-band Band-Pass Filter Using Micro-Ring Resonator
摘要： This paper reports the design and theoretical analysis of the spoof plasmonic metamaterial based multi-band band-pass filter (BPF) using corrugated planar micro-ring resonator at THz frequency. Plasmonic metamaterial i.e. spoof surface plasmon polaritons structures support EM mode at the interface of the metal-dielectric and thus highly confined and localized E-field can be obtained. Due to this sub-wavelength field confinement, spoof SPP structures show low-loss, low crosstalk and low mutual coupling and is being used for developing the compact integrated circuits. Sub-wavelength rectangular grooves are corrugated on the metallic planar ring is fed through the spoof SPP transmission line at its input and output ports to provide a band-pass response. The detailed mathematical analysis is provided for the designed band-pass filter. The Full wave EM simulation is performed to obtain the reflection and transmission coefficient. The designed spoof plasmonic ring resonator will provide a path to design and development of the plasmonic sensors.
关键词： Band-Pass Filter (BPF),Ring Resonator,Plasmonic Metamaterial
更新于2025-09-12 10:27:22
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Design of Dual Band and Tri-band Bandpass Filter (BPF) with Improved Inter-band Isolation Using DGS Integrated Coupled Microstrip Lines Structures
摘要： A novel approach to design dual-band as well as a triple-band BPF with improved isolation is ventured in this paper. In dual-band filter, dual mode property of coupled line filters is utilized to obtain resonant frequencies at 2.4 GHz and 7.4 GHz suitable for WLAN and WiMAX application respectively. Additionally a rectangular-ring DGS element is introduced within the coupled line filter to obtain a separate mid-band resonance at 5.2 GHz. The frequency shifting property of the pass bands due to cross-coupling between the microstrip line resonators and the DGS element is mostly eliminated by implementing stepped impedance open stub (SIOS) technique. All filter configurations are fabricated, measured and compared with the simulated models to validate the practical effectiveness. Stop band isolation > 40 dB and insertion loss (IL) < 0.8 dB is attained in all the filter configurations.
关键词： Defected ground structure (DGS),Band pass filter (BPF),Microstrip coupled line,Stepped impedance open stub (SIOS)
更新于2025-09-11 14:15:04