3D-Printed Electromagnetic Band-Gap Band-Pass Filter Based on Empty Single-Ridge Waveguide

In this work, a new method for the design of band-pass filters in an empty waveguide by using periodic structures is presented in a theoretical and experimental way. The proposed filter topology uses a periodic profile of two heights in the central part of an Empty Single-Ridge Waveguide (ESRW) for...

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Bibliographic Details
Published inIEEE access Vol. 10; pp. 53954 - 53962
Main Authors Garcia-Martinez, Hector, Torregrosa-Penalva, German, Avila-Navarro, Ernesto, Delmonte, Nicolo, Silvestri, Lorenzo, Bozzi, Maurizio
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 2022
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Additive manufacturing
band-pass filter
Band-pass filters
Bandpass filters
Bandwidth
Cutoff frequency
Design parameters
Dispersion
electromagnetic band-gap
Electromagnetic wave filters
Electromagnetic waveguides
empty single-ridge waveguide (ESRW)
Energy gap
fused deposition modeling (FDM)
Metamaterials
Periodic structures
Rapid manufacturing
Tapering
Three dimensional printing
Topology
Unit cell
Waveguides
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Summary:In this work, a new method for the design of band-pass filters in an empty waveguide by using periodic structures is presented in a theoretical and experimental way. The proposed filter topology uses a periodic profile of two heights in the central part of an Empty Single-Ridge Waveguide (ESRW) for the generation of an Electromagnetic Band-Gap (EBG), and it provides simple unit cell design parameters to produce specific dispersion characteristics. The implementation of two band-pass filters with different fractional bandwidths (36% and 55%) and different characteristics in the rejection band is proposed, where to minimize the mismatch in the ESRW filter's passband, a tapering technique is used that follows a Kaiser distribution for the EBG. To experimentally validate the design concept, a band-pass filter with a fractional bandwidth of 55% centered on 5.45 GHz is manufactured, using a low-cost 3D printer, which allows the rapid manufacture of complex geometries at a very reduced price. The experimental results validate the simulated response of the implemented ESRW band-pass filter.
ISSN:2169-3536
2169-3536
DOI:10.1109/ACCESS.2022.3175868