This thesis introduces, for the first time, novel microwave circuits using ferrite left handed (LH) coplanar waveguide (CPW) metamaterials. Most commonly useful ferrite circuits such as impedance transformers, resonators, and couplers have been investigated. Compared to such conventional ferrite circuits, the proposed circuits are characterized by very compact size introducing small losses and wide operational bandwidth, novel propagation properties, in addition to new functionalities which are proposed here for the first time as well.