Multi-band High Efficiency Power Amplifiers Using Metamaterial-Based Elements

超材料是一种人工合成的材料，具有自然界中不存在的物理和电学性质 材料.基于超材料的微波器件有两种主要的设计方法： 谐振型方法和人工传输线方法。在这个提议中，新的超材料细胞 并提出了基于上述两种设计方法的夹杂物。这些内含物和细胞 具有许多优于传统实现的优点，并克服了许多与 在文献中发现的众所周知的内含物和细胞。使用共面波导（CPW）的优点 利用了传输线及其不连续性。 除了减小微波元件的尺寸外，这些夹杂物/单元还提供了设计的可能性。 多共振夹杂物研究的重点将是实施这些包容性的可行性研究 根据某些基站规范设计多频带功率放大器。

Metamaterials are artificial materials which have physical and electrical properties not existing in natural materials. There are two main design approaches for metamaterial-based microwave devices: the resonance-type approach and the artificial transmission line approach. In this proposal, new metamaterial cells and inclusions based on the two aforementioned design approaches are proposed. These inclusions and cells have many advantages over conventional implementations and overcome many limitations related to well-known inclusions and cells found in the literature. The advantage of using coplanar waveguide (CPW) transmission lines and their discontinuities are utilized. Besides of reducing the microwave components size, theses inclusions/cells give the possibility of designing multi-resonant inclusions. The research will be focused on a feasibility study of implementing these inclusions to design multiband power amplifiers in accordance to certain base station specifications.