Characteristics of an aperture-coupled rectangular dielectric resonator are investigated theoretically. A model based on the modal expansion method and the spectral domain approach is developed. Numerical results for Q factors, radiation efficiency and radiation patterns are presented for various values of material and structural parameters of the resonator, and it is found that by suitable choice of these parameters high efficiency, wide bandwidth and broadside radiation patterns can be achieved for the TE/sub 111//sup y/ mode. Effects of aperture dimensions, aperture displacement and open-stub length on input impedances are also discussed. Results for return losses and radiation patterns are compared with available measured data, showing reasonable agreement. The results presented should be useful for the design of this type of new antenna.
展开▼
机译:理论上研究了孔径耦合矩形介质谐振器的特性。建立了基于模态展开法和谱域法的模型。针对谐振器的材料和结构参数的各种值,给出了Q因子,辐射效率和辐射方向图的数值结果,发现通过适当选择这些参数,可以实现高效率,宽带宽和宽边辐射方向图。 TE / sub 111 // up y /模式。还讨论了孔径尺寸,孔径位移和短截线长度对输入阻抗的影响。将回波损耗和辐射方向图的结果与可用的测量数据进行比较,显示出合理的一致性。给出的结果对于这种新型天线的设计应该是有用的。
展开▼