@article{10902/23744,
year = {2021},
month = {1},
url = {http://hdl.handle.net/10902/23744},
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.},
organization = {This work was supported in part by the Spanish Ministry of Science, Innovation and Universities under Project TEC2017-83343-C4-1-R and in part by European Fund for Economic and Regional Development (FEDER).},
publisher = {Institute of Electrical and Electronics Engineers Inc.},
publisher = {IEEE Microwave and Wireless Components Letters, 2022, 32(1), 9-12},
title = {An ultra-compact full-band waveguide quadrature hybrid coupler},
author = {Cano de Diego, Juan Luis and Ceccato, Gabriele and Fernández Ibáñez, Tomás and Mediavilla Sánchez, Ángel and Perregrini, Luca},
}