Capability of 3D printing for developing wideband multilayered antenna systems packaged with active RF circuit components remains relatively unexplored. To address this gap, this manuscript demonstrates wideband patch antenna that is integrated with a polarization selection switch. Antenna bandwidth is enhanced with customized substrate thicknesses and stacked patch layers. Switch is integrated with 3D vertical transitions to achieve wide bandwidth, smaller packaging, and low-loss. To enable future antenna array applications, a detailed investigation is also presented to maximize the performance of the microstrip feed lines by adjusting the substrate thickness and deposition process. The antenna consists of 13 dielectric and conductive layers. Specifically, the manuscript demonstrates the lowest attenuation in the literature for a fully printed microstrip line with 0.25 dB/cm measured loss at 18 GHz. The antenna operates with more than 80% radiation efficiency and 45% bandwidth. The polarization switch is embedded within the antenna structure. The antenna retains a high cross-polarization ratio of ~20 dB due to 3D feed line transitions and symmetric location of the switch with respect to the antenna feeds.

中文翻译：

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集成MMIC开关的3D打印宽带多层双极化堆叠式贴片天线

相对来说，开发具有有源RF电路组件的宽带多层天线系统的3D打印能力尚未得到开发。为了解决这一差距，该手稿演示了集成了极化选择开关的宽带贴片天线。定制的基板厚度和堆叠的贴片层可增强天线带宽。交换机与3D垂直过渡集成在一起，以实现宽带宽，更小的封装和低损耗。为使将来的天线阵列应用成为可能，还提出了详细的研究，以通过调整基板厚度和沉积工艺来最大化微带馈线的性能。天线由13个介电层和导电层组成。特别，该手稿展示了文献中对完全印刷的微带线的最低衰减，在18 GHz时测得的损耗为0.25 dB / cm。该天线具有超过80％的辐射效率和45％的带宽。极化开关嵌入天线结构内。由于3D馈线过渡以及开关相对于天线馈源的对称位置，天线保留了约20 dB的高交叉极化比。