RF engineering is vital for developing the technology people use to communicate. RF engineers design, monitor and implement the systems that use radio frequencies to send and receive signals. RF engineers are responsible for creating and optimizing the components and circuits that enable wireless communication, such as antennas, transmitters, receivers, filters, amplifiers, and modulators.RF engineering is based on the principles of electromagnetic waves, transmission lines, and network analysis.A radio frequency (RF) signal refers to a wireless electromagnetic signal used as a form of communication.It Design of coupling and transmission line structures to transport RF energy without radiation.