Abdalmalak Kerlos Atia, Althuwayb Ayman Abdulhadi, Lee Choon Sae, Botello Gabriel Santamaría, Falcón-Gómez Enderson, García-Castillo Luis Emilio, García-Muñoz Luis Enrique
Department of Signal Theory and Communications, Carlos III University of Madrid, 28903 Madrid, Spain.
Electrical Engineering Department, Aswan University, Aswan 81542, Egypt.
Sensors (Basel). 2022 Apr 18;22(8):3089. doi: 10.3390/s22083089.
A novel feeding method for linear DRA arrays is presented, illuminating the use of the power divider, transitions, and launchers, and keeping uniform excitation to array elements. This results in a high-gain DRA array with low losses with a design that is simple, compact and inexpensive. The proposed feeding method is based on exciting standing waves using discrete metallic patches in a simple design procedure. Two arrays with two and four DRA elements are presented as a proof of concept, which provide high gains of 12 and 15dBi, respectively, which are close to the theoretical limit based on array theory. The radiation efficiency for both arrays is about 93%, which is equal to the array element efficiency, confirming that the feeding method does not add losses as in the case of standard methods. To facilitate the fabrication process, the entire array structure is 3D-printed, which significantly decreases the complexity of fabrication and alignment. Compared to state-of-the-art feeding techniques, the proposed method provides higher gain and higher efficiency with a smaller electrical size.
提出了一种用于线性介质谐振天线（DRA）阵列的新型馈电方法，阐述了功率分配器、过渡结构和发射器的使用，并保持对阵列元件的均匀激励。这导致了一种具有低损耗的高增益DRA阵列，其设计简单、紧凑且成本低廉。所提出的馈电方法基于在一个简单的设计过程中使用离散金属贴片来激发驻波。给出了具有两个和四个DRA元件的两个阵列作为概念验证，它们分别提供了12dBi和15dBi的高增益，这接近基于阵列理论的理论极限。两个阵列的辐射效率约为93%，这与阵列单元效率相等，证实了该馈电方法不会像标准方法那样增加损耗。为便于制造过程，整个阵列结构采用3D打印，这显著降低了制造和对准的复杂性。与现有技术的馈电技术相比，所提出的方法以更小的电气尺寸提供了更高的增益和更高的效率。
