3D Printed Wideband Circularly Polarized Pyramidal Horn Antenna

Wahyud, Agus Hendra; Sumantyo, Josaphat Tetuko Sri; Budiyanta, Ari Sugeng; Munir, Achmad

doi:10.23919/piers.2018.8597894

Cited by 10 publications

(4 citation statements)

References 12 publications

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“…Efforts on PCB-based transitions have previously been reported in Ref. [20,21] and for double-ridged horns in Ref. [22].…”

Section: Discussionmentioning

confidence: 99%

“…However, in Ref. [20,22], significant discrepancies between simulations and measurements, including degraded antenna efficiency are reported. These papers are using a manual conductive spray painting metallisation.…”

Section: Discussionmentioning

confidence: 99%

“…Compared with similar works on PCB-feed structures for 3-D printed antennas [20,22], we provide an optimised PCB feed for the horn antenna. As indicated by measurements, high conductivity metallisation is required.…”

Section: Discussionmentioning

confidence: 99%

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Design of robust and low‐loss 3‐D printed double‐ridged waveguide to microstrip transition

Eriksrod

Kjelgård

Lande

2022

IET Microwaves Antenna & Prop

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In this paper, we present a new microstrip to waveguide transition design for interfacing printed circuit board (PCB) microstrip transmission lines with 3-D printed metallisedplastic waveguide components. Compared with traditional metal waveguides, interfacing with plastic-based waveguides are challenging due to thermal and mechanical constraints. Despite the development of 3-D printing technology, the precision of 3-D printed waveguides is not as good as the machined metal counterparts. This is critical for microwave components and must be considered in the design process. To minimise the effect of non-ideal waveguide components, a design methodology minimising sensitivity to geometrical variations in the 3-D printed parts is proposed. By sandwiching the PCB between two waveguide sections and optimising the waveguide impedance transformation geometry, the design shows very low insertion loss. It is mechanically robust, cost effective and simple to manufacture. In full system integration, this transition design eliminates the need for expensive microwave cabling and connectors by directly mounting the waveguide to the microwave transceiver PCB. The proof-of-concept transition structure presented in this paper is suitable for microwave applications where low cost and low weight are critical, for example, drone-based radars for remote sensing and space-born satellites. The fabricated structure is characterised using two sets of waveguide components manufactured with different 3-D printing technology and metallisation process': conductive spray painted Fused Deposition Modelling-Polylactic Acid (PLA Painted) and copper electroplated Stereolithography (SLA Plated). Scattering parameters for both types are measured in a short and back-to-back configuration, obtaining the reflection coefficient and insertion loss. Measurements indicate good agreement with modelling and measured performance exceeding prior art. The measured operation band of the Copper-SLA version is 2.9-7.2 GHz with <−10 dB reflection coefficient (S11) and with an insertion loss (S21) of <0.7 dB. With the reduced metallisation and surface quality of the Spray-PLA model, the band is shifted to 3.0-8.0 GHz with an increased S21 of <1.8 dB. The results demonstrate the importance of adopting new transition structures for 3-D printed microwave components where the surface roughness, metallisation quality, and mechanical properties are less optimal. By combining the proposed design with 3-D printed metallised microwave components, very light weight and cost-effective antenna systems can be implemented. Radiation measurements of a 3-D printed double ridge horn antenna connected to the waveguide and used as a feed are also presented, where the operation band is measured to 3-10 GHz with a gain of 5-10 dBi.

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“…Efforts on PCB-based transitions have previously been reported in Ref. [20,21] and for double-ridged horns in Ref. [22].…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Design of robust and low‐loss 3‐D printed double‐ridged waveguide to microstrip transition

Eriksrod

Kjelgård

Lande

2022

IET Microwaves Antenna & Prop

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“…Recently, it has gained prominence even in the microwave community for manufacturing dielectric layers for antennas and other components. Various components such as horn antennas, [2][3][4][5] transmission lines, [6][7][8] array antenna systems, [9][10][11] printed antennas, 12,13 waveguide components, 14,15 and periodic surfaces [16][17][18][19][20][21][22][23][24] have been designed and developed using AM. Initially, methods like electroplating 8 or wire-mesh embedding 10 have been used to realize the conductive parts.…”

Section: Introductionmentioning

confidence: 99%

Additively manufactured frequency selective surface for gain enhancement of sub‐6 GHzmonopole antenna

Mellita

Karthikeyan

Damodharan

2022

Int J RF Mic Comp-Aid Eng

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This article demonstrates the advantages of prototyping microwave components using additive manufacturing (AM) technologies. For corroboration, a frequency selective surface (FSS) with meandered square loop and a monopole antenna are manufactured using AM and printed circuit board (PCB) technologies. The performance of these prototypes designed for sub-6 GHz applications are comparatively analyzed. A parametric study further

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