Comparing phase detectors in analog Phase-Locked Loops Rancés Sánchez Sánchez, José Roberto Castilho Piqueira and Átila Madureira Bueno Eur. Phys. J. Spec. Top., 230 18-20 (2021) 3609-3614 Published online: 27 July 2021 DOI: 10.1140/epjs/s11734-021-00245-3