This paper presents a design approach of a filtering antenna arrays based on the coupling matrix theory. The approach generates filtering functionality using the resonating array radiating elements and the resonator based feed network regardless to the physical structure. To implement the approach, a novel topology for a two-element array is presented, here three rectangular waveguide cavity resonators have been employed to form the filtering array. The array has a fractional bandwidth of 10% at the centre frequency 10 GHz with a reflection coefficient magnitude within the passband of 20 dB. The realised gain over the passband is 9.8 ± 0.4 dBi. The array has been fabricated and the measurements are in very good agreement with the simulations, validating the approach.

本文提出了一种基于耦合矩阵理论的滤波天线阵设计方法。该方法使用谐振阵列辐射元件和基于谐振器的馈电网络生成滤波功能，而与物理结构无关。为了实现该方法，提出了一种用于两元件阵列的新颖拓扑结构，这里已经采用了三个矩形波导腔谐振器来形成滤波阵列。该阵列在中心频率10 GHz处的分数带宽为10％，通带内的反射系数幅度为20 dB。通带上实现的增益为9.8±0.4 dBi。该阵列已经制造出来，并且测量结果与仿真非常吻合，验证了该方法。