@article{souza_souza_pontes_melo_llamas-garro_2020,  title={A Novel Fully Integrated 4-Bit IFM Subsystem Using Band-Stop Filters},  volume={19},  ISSN={2179-1074},  url={https://doi.org/10.1590/2179-10742020v19i3843},  DOI={10.1590/2179-10742020v19i3843},  number={3},  journal={Journal of Microwaves, Optoelectronics and Electromagnetic Applications},  publisher={Sociedade Brasileira de Microondas e Optoeletrônica e Sociedade Brasileira de Eletromagnetismo},  author={Souza, S. R. O de and Souza, M. F. A de and Pontes, L. P. and Melo, M. T. de and Llamas-Garro, Ignacio},  year={2020},  month={Jul},  pages={396–406} }