The objectives of this subject are: - Know and understand the devices the radiofrequency (RF) chain of a typical communication system is made up of, from the antenna to the RF subsystems (couplers, filters, multiplexors, mixers, amplifiers, …) - Use the analysis and design rules of circuits in the main technologies used in RF (planar, coaxial cable, waveguide, …) - Understand and use the analysis and design rules of the main RF devices used for power distribution and antenna array feeding - Understand and use the main analysis and design rules to synthesize radiation diagrams used in radiocommunications - Understand and use the analysis and design rules of the main RF devices used por frequency discrimination - Use the concept of polarization discrimination in radiocommunication systems