An ultra-compact full-band waveguide quadrature hybrid coupler

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URI: http://hdl.handle.net/10902/23744
ISSN: 1531-1309
ISSN: 1558-1764
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Autoría
Cano de Diego, Juan LuisAutoridad Unican; Ceccato, Gabriele; Fernández Ibáñez, TomásAutoridad Unican; Mediavilla Sánchez, ÁngelAutoridad Unican; Perregrini, Luca
Fecha
2021-01
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© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publicado en
IEEE Microwave and Wireless Components Letters, 2022, 32(1), 9-12
Editorial
Institute of Electrical and Electronics Engineers Inc.
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Palabras clave
Directional coupler
Full bandwidth
Hybrid coupler
Waveguide
Resumen/Abstract
This work proposes an easily scalable quadrature hybrid coupler (QHC) topology with two symmetric stepped apertures that originate a square coaxial-like mid-section. This new configuration enables an ultra-compact design, three times shorter than equivalent structures, having 40% of fractional bandwidth with 25 dB of matching/isolation and 1 dB of axial ratio (AR). The impedance transformers can be easily redesigned to meet other requirements related to electrical performance or even other desired coupling values. For verification purposes, a prototype at Ku -band was manufactured and measured showing good agreement with simulation results.
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