Fabrication and Characterization of 3D Printed mmWave RF Devices

Employing a novel 3D printing technique, a ring resonator and a patch antenna array for millimeter-wave applications were successfully fabricated. Microscopic examination confirmed precise dimensional accuracy and manufacturing tolerances. Frequency domain measurements validated the design, with the antenna array achieving a -10 dB bandwidth of 1.6 GHz and a resonant frequency of 34.6 GHz. The ring resonator's first four modes accurately determined the dielectric's relative permittivity for 10–37 GHz, demonstrating the feasibility of this technology to produce high-precision RF components at millimeter-wave frequencies.