One of the key elements today in the wireless industry, especially in the silicon RF integrated circuits field, is the design of high-quality passive elements. The performance of several basic circuit blocks such as low noise amplifiers, mixers and voltage controlled oscillators depends on the quality of these elements. The work done establishes the design guidelines for the definition of the inductor's geometrical characteristics and new techniques to improve their quality. It also covers their measurement and characterisation. This fact is not always taken into account by the designers due to the lack of information in bibliography regarding to this topic. The novelty of this work lies in that it covers and studies the whole design flow of an inductor. From the definition and analysis of the physical effects that appear in them to their modelization, it covers issues such as the maximization of the quality by a correct definition of the geometry, novel aggressive design rules, a design flow for the definition of the inductor's geometry, selection of the measurement equipment, de-embedding, determination of the relation that exists between the measurement configuration and the circuit model used in the characterization, source of errors, etc.