@ARTICLE {31933,
author={B. R. Ravelo and G.  Fontgalland and H.  Silva},
doi={10.1109/ACCESS.2022.3141626},
journal={IEEE Access},
title={Original Application of Stop-Band Negative Group Delay Microwave Passive Circuit for Two-Step Stair Phase Shifter Designing},
year={2022},
month={January},
volume={10},
number={2022},
pages={1493-1508},
ISSN={}
}