Low-Cost Ku-Band Waveguide Devices Using 3-D Printing and Liquid Metal Filling

Coaxial probe‐fed open‐ended waveguide antenna based on sand casting process with filtering characteristics and all‐in‐one structure

“…In order to ensure the process precision of internal space, detached parts, and post-processing assembly are often needed, which unavoidably causes error, air gap, and loss. Both computer numerical control (CNC)-metalmilling and 3-D printing technologies have been adopted in the manufacture of waveguide component, but postprocessing, such as assembly, [9][10][11] metal plating, [12][13][14] and liquid metal filling, 15 is still indispensable. For example, the fabrication of proposed waveguide magic-T in 10 needed three-step process.…”

“…Finally, the whole structure was accomplished by assembling each part. In Reference 15, the proposed waveguide device was realized by 3‐D printing and liquid metal filling, where the former provided container and the latter served for metallization.…”

Liquid‐metal‐disk‐loaded monopole antenna based on 3D printed technique

“…So far, many liquid metal antennas have been proposed in terms of tunable frequency, polarization, and radiation patterns 1‐7 . Besides, some liquid planar antennas and liquid waveguide devices have also been studied 8‐11 …”

“…[1][2][3][4][5][6][7] Besides, some liquid planar antennas and liquid waveguide devices have also been studied. [8][9][10][11] In this paper, a disk-loaded monopole antenna by filling liquid metal is proposed. Unlike the traditional machining process, 3D printing technique is used to fabricate the antenna in-one-go.…”

Wrist-Worn RFID Antenna Printed on Additive Manufactured Flexible Substrate

“…Antenna engineering is one of the fields where the role of AMTs is most evident. Examples include various microwave components [2], horn antennas [3], and dielectric lenses [4], among other. The applications range from space communications [5], 5G backhaul [4], to wireless body area networks [7], [8], for example.…”