This paper explores the use of additive manufacturing as a low-cost method to integrate coaxial SubMiniature version A (SMA) connectors with waveguides operating at X-band. The integration of coaxial connectors into the filter and waveguide designs via 3D printing eliminates the need for two additional bulky external SMA-to-waveguide transitions, and allows for customizable integrated SMA-to-waveguide transitions that minimize impedance mismatch. Four designs, including air-filled and polycarbonate (PC) dielectric-filled waveguides and two-pole filters, are modeled and manufactured using additive manufacturing to demonstrate this integrative approach. Placement of the coaxial connector in terms of depth and location is optimized in the designs for good match using simulation. PC dielectric posts are also incorporated into the device to provide additional reinforcement to the coaxial connectors without impacting the radio frequency (RF) performance. Good RF performance is achieved with the variation less than 0.39 dB between simulated and measured insertion loss results at the center of the device passband.

本文探讨了将增材制造作为一种低成本方法，以将同轴微型微型A型（SMA）连接器与在X波段工作的波导集成在一起的低成本方法。通过3D打印将同轴连接器集成到滤波器和波导设计中，不再需要两个额外的外部SMA到波导过渡，并且可定制的集成SMA到波导过渡将阻抗失配降至最低。使用增材制造对四种设计进行建模和制造，包括空气填充和聚碳酸酯（PC）介质填充的波导以及两极滤波器，以证明这种集成方法。在设计中优化了同轴连接器在深度和位置方面的放置，以通过仿真实现良好匹配。PC介电柱也集成到设备中，以在不影响射频（RF）性能的情况下为同轴连接器提供额外的加固。通过在设备通带中心模拟和测量的插入损耗结果之间的变化小于0.39 dB，可以实现良好的RF性能。