In this paper, we provided a manufacturing method for low-sintering-temperature radio frequency (RF) devices by stereolithographic (SLA) printing. The effect of ceramic powder percentage on rheological properties, curing behavior, sintering properties, microstructure, and dielectric properties was discussed. With the proportion of ceramic powder ranging from 60 wt% to 75 wt%, the viscosity of slurries declined, the sintering shrinkage rate varied from 21.61% to 15.83%, the dielectric constant raised from 5.22 to 6.64, and the dielectric loss initially reached the optimum value of 0.0024 and then deteriorated to 0.0035. The maximum solid content of slurries was 75 wt%, and the printable viscosity should be below 7.33 Pa·s. At the mass ratio of 65:35, the samples sintered at 850 °C showed good properties: a density of 3.0135 g·cm⁻³, a dielectric constant of 5.56, a low dielectric loss of 2.4 × 10⁻³, and τ_f = −32.76 ppm/°C. The printed Luneburg lens showed a gain enhancement of over 5 dB, by using a 10 dBi standard gain horn antenna as a feed source. Thus, this research established a foundation for the fabrication of ceramic RF devices with high-performance, complex structures, and low sintering temperature via SLA printing.

在本文中，我们提供了一种通过立体光刻 (SLA) 印刷制造低烧结温度射频 (RF) 器件的方法。讨论了陶瓷粉末百分比对流变性能、固化行为、烧结性能、微观结构和介电性能的影响。随着陶瓷粉体比例从 60 wt% 到 75 wt%，浆料粘度下降，烧结收缩率从 21.61% 变化到 15.83%，介电常数从 5.22 提高到 6.64，介电损耗初步达到0.0024 的最佳值，然后恶化到 0.0035。浆料的最大固含量为75 wt%，可印刷粘度应低于7.33 Pa·s。在质量比为 65:35 时，在 850 °C 下烧结的样品表现出良好的性能：密度为 3.0135 g·cm^-3，介电常数为 5.56，介电损耗低为 2.4 × 10 ^-3，τ _f = -32.76 ppm/°C。通过使用 10 dBi 标准增益喇叭天线作为馈源，印刷的 Luneburg 透镜显示增益增强超过 5 dB。因此，这项研究为通过 SLA 打印制造具有高性能、复杂结构和低烧结温度的陶瓷射频器件奠定了基础。