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A single-layer SIW slot array antenna with TE20 mode

机译:具有TE20模式的单层SIW缝隙阵列天线

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The idea of using higher order modes is demonstrated by an SIW slot array antenna with a TE20 mode to realize boresight radiation. In order to excite the TE20 mode, an SIW hybrid coupler and a compact SIW 90° phase shifter are designed to offer the two out-of-phase outputs with identical amplitude. Besides, a CPW-SIW transition is adopted for measurement. The SIW slot array antenna with the TE20 mode is designed at X-band in a single-layer PCB. The measured bandwidth is 5.5% (9.72-10.27 GHz). The measured total efficiency is 80% at 10 GHz. Compared to a conventional SIW slot array just with a power divider, using the TE20 mode provides the merits of not only reducing the number of vias but also relaxing fabrication limit and tolerance which could be the fabrication bottleneck at high frequencies.
机译:SIW缝隙阵列天线带有TE20模式以实现视轴辐射,证明了使用高阶模式的想法。为了激发TE20模式,设计了一个SIW混合耦合器和一个紧凑的SIW 90°移相器,以提供具有相同幅度的两个异相输出。另外,采用CPW-SIW过渡进行测量。具有TE20模式的SIW缝隙阵列天线是在X波段的单层PCB中设计的。测得的带宽为5.5%(9.72-10.27 GHz)。在10 GHz下测得的总效率为80%。与仅带有功率分配器的常规SIW插槽阵列相比,使用TE20模式不仅具有减少过孔数量的优点,而且还可以放宽制造限制和公差,而这可能是高频下的制造瓶颈。

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