DDS-Based Signal-Generation Architecture Comparison for an Imaging Radar at 300 GHz. - Gorka Rubio Cidre; Alejandro Badolato; Luis Ubeda-Medina; Jesús Grajal; Beatriz Mencia-Oliva; Blas-Pablo Dorta-Naranjo (IEEE Trans. Instrum. Meas., 2015)