An effective method is proposed to excite the untilted edge slot antennas. In the proposed method, two T-shaped wires are placed at both sides of each untilted slot. Two legs of each T-shaped wire are connected to the waveguide walls, while the third leg is open. One of the T-shaped wires connects the upper broad wall of the waveguide to the narrow wall of the waveguide which contains the slots. Similarly, the other T-shaped wires connect the lower broad wall of the waveguide to the narrow wall of the waveguide that contains the slots. The phase reversal between the adjacent slots can be accomplished by changing the orientation of the T-shaped wires. It is shown that the arm lengths of the connected wires can be employed as a parameter to control the radiated power by the slots. Furthermore, the arm lengths of the open wires can be selected properly to control the dynamic range of the equivalent normalized susceptance associated with each untilted slot antenna. To validate the effectiveness of the proposed antennas, two linear arrays consisting of 11 slots have been designed, implemented, and tested. The simulation and the measurement results of the designed arrays show that for the proposed untilted edge slot antennas, the dynamic range of the equivalent normalized susceptance is improved significantly which leads to a straightforward design process with no requirement to resort to any time-consuming tuning process.

提出了一种有效的激励非边缘缝隙天线的方法。在所提出的方法中，两根 T 形线放置在每个未倾斜槽的两侧。每条 T 形线的两条腿连接到波导壁，而第三条腿是开放的。其中一根 T 形线将波导的上宽壁连接到包含槽的波导的窄壁。类似地，其他 T 形线将波导的下部宽壁连接到包含槽的波导的窄壁。相邻槽之间的反相可以通过改变T形线的方向来实现。结果表明，连接线的臂长可以作为控制槽辐射功率的参数。此外，可以适当地选择明线的臂长，以控制与每个非斜缝天线相关的等效归一化电纳的动态范围。为了验证所提出天线的有效性，设计、实施和测试了由 11 个槽组成的两个线性阵列。所设计阵列的仿真和测量结果表明，对于所提出的非边缘缝隙天线，等效归一化电纳的动态范围显着提高，从而使设计过程简单明了，无需求助于任何耗时的调谐过程. 已经设计、实施和测试了两个由 11 个插槽组成的线性阵列。所设计阵列的仿真和测量结果表明，对于所提出的非边缘缝隙天线，等效归一化电纳的动态范围显着提高，从而使设计过程简单明了，无需求助于任何耗时的调谐过程. 已经设计、实施和测试了两个由 11 个插槽组成的线性阵列。所设计阵列的仿真和测量结果表明，对于所提出的非边缘缝隙天线，等效归一化电纳的动态范围显着提高，从而使设计过程简单明了，无需求助于任何耗时的调谐过程.