Detachable Impedance-Matching Boosters for FSS-Based Broadband Designs

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
2024 IEEE International Symposium on Antennas and Propagation and INC/USNC‐URSI Radio Science Meeting (AP-S/INC-USNC-URSI), 2024, 00, pp. 1821-1822
Issue Date:
2024-09-30
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Without modifying the unit cell geometries of existing frequency selective surfaces FSSs or metasurfaces MSs this paper proposed a simple but effective approach to improve impedance matching to the free space over a broad frequency spectrum Specifically a pair of free standing dielectric slabs act as impedance matching transformers and the outermost equivalent circuit branches remain unaffected due to the air spacers Through the application to a wideband bandpass filter it has been verified that with both a single dielectric material and more practically a stack of multiple available dielectric materials the in band energy transmission can be enhanced from 90 to 99 without trade off in bandwidth or out of band rejections
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