This course provides students with an overview understanding and essential techniques for designing electromagnetic circuits at mm-wave, microwave and radio frequencies (RF). These circuits are of importance to the design of 5G wireless products and other applications for cutting-edge mobile and high-speed electronic devices. This course introduces students to theoretical and software tools used to analyse and design the aforementioned circuits, and gain an understanding on the passive and active building blocks to microwave circuits, such as ones used in a 5G mobile phone. This course also gives students exposure to the practical fabrication and testing of such high-frequency microwave circuits.