论文标题
purcell效应的微波证明增强了辐射效率
Microwave Demonstration of Purcell Effect Enhanced Radiation Efficiency
论文作者
论文摘要
我们在实验上展示了一种基于Purcell效应的设计技术，可改善阻抗匹配，从而提高了小型微波发射器的辐射效率。使用迭代过程以对介电环境中的空气中发射极辐射场的相位进行比较，我们优化了围绕小型单极微波发射器的地面平面上方的介电半球的结构，以使其辐射效率最大化。优化的系统显示了在2.00 GHz和2.84 GHz处发射极和两个全向辐射模式之间的非常强的耦合，从而产生了8360和430倍的Purcell增强因子和接近完美的辐射效率。
We experimentally demonstrate a Purcell effect-based design technique for improved impedance matching, and thus enhanced radiation efficiency from a small microwave emitter. Using an iterative process centred on comparing the phase of the radiated field of the emitter in air with that of the emitter in a dielectric environment, we optimise the structure of a dielectric hemisphere above a ground plane surrounding a small monopolar microwave emitter in order to maximise its radiation efficiency. The optimised system shows very strong coupling between the emitter and two omnidirectional radiation modes at 2.00 GHz and 2.84 GHz, yielding Purcell enhancement factors of 8360 and 430 times increase respectively, and near perfect radiation efficiency.
