Smart frequency agility control system using compact microstrip CRLH-TL array structure for communication and radar applications

Metamaterials represent a new paradigm in electromagnetic science and technology. They have already leaded to many unprecedented microwave applications, which may be classified in three categories: guided-wave, radiated-wave and refracted-wave applications. Radiated-wave applications cover several types of novel antennas and reflectors, which may be 1D or 2D, passive or active, and static or dynamically tuned. Progress in metamaterial technologies places challenging demands on material properties and therefore structured electromagnetic materials. The development of composite right / left-handed transmission lines (CRLH-TLs) has received considerable attention due to the unique propagation characteristics. The CRLH-TLs are the metamaterials with both of the RH and the LH properties. In this paper, study and design of smart frequency agility control system has been introduced and investigated. The proposed CRLH-TL has been evaluated using a commercial software. The final proposed system with smart control unit has been fabricated and the scattering characteristics have been illustrated using network analyzer to meet the multifunction operation requirements for communication and radar applications.