Beatriz Aja received the Telecommunications Engineering and Ph.D. degrees from the University of Cantabria, Santander, Spain, in 1999 and 2007, respectively. From 2008 to 2012 and 2013 to 2015, she was an Invited Scientist with the Fraunhofer Institute for Applied Solid State Physics, Freiburg im Breisgau, Germany, in a joint collaboration project with the Centro Astronómico de Yebes, Guadalajara, Spain, where her main activity was the design of monolithic microwave integrated circuit (MMIC) for cryogenic applications. She has been involved in the development of the receivers for the Planck Mission and QUIJOTE (Q-U-I JOint Tenerife) CMB Experiment. She is currently an Associate Professor with the Department of Communications Engineering, University of Cantabria. Her research interests include the design and characterization of low-noise amplifiers (LNAs) for cryogenic applications, microwave- and millimeter-wave passive components, and radio astronomy receivers.