Ku-band sidearm orthomode transducer manufactured by additive layer manufacturing

Szymkiewicz, Michael; Konkel, Yves; Hartwanger, Christian; Schneider, Michael

doi:10.1109/eucap.2016.7481434

Cited by 19 publications

(5 citation statements)

References 1 publication

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“…SLM and SLA are two of the AM technologies most exploited for the realisation of microwave devices. The former has been used for waveguide components as filters [5][6][7], orthomode-transducers [8], recombination networks [9], mode converters [10] and horn antennas [11]. The latter has been mainly exploited for open structures (antenna, lens, slot array and periodical structure) [12][13][14] and most recently also for waveguide components [15,16].…”

Section: Am Processesmentioning

confidence: 99%

“…5b shows a Leica EZ4D stereo-microscope picture with detailed images of the surface in different areas of the filter where the surface roughness have been measured using a surface roughness tester, SM Instruments RTP80 according to the DIN EN ISO 4287 standard. The surface roughness varies in the range [8,15] μm depending on the accessibility of the filter area to the microspheres used in the shot-peening post-processing. The results derived through the RF best-fitting and the optical scanning procedures are consistent with the mechanical accuracy values reported in Table 1, where a comparison of the electromagnetic and mechanical properties among the different prototypes is summarised.…”

Section: Microwave Filtersmentioning

confidence: 99%

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Additive manufacturing of Ku/K‐band waveguide filters: a comparative analysis among selective‐laser melting and stereo‐lithography

Peverini

Addamo

Lumia

et al. 2017

IET Microwaves, Antennas & Propagation

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This study describes an experimental research activity on the manufacturing of passive waveguide components by means of two additive technologies, namely the selective‐laser melting and the stereo‐lithography processes. The former is a power‐bed fusion process, for which aluminium, titanium, and steel powders have been considered in this study. The latter is based on the photopolymerisation of a resin vat. This technology has been applied in conjunction with an acrylonitrile–butadiene–styrene‐like polymer and a subsequent electrolytic copper plating for the metallisation of the internal channels. Wideband filters operating in Ku/K band have been developed as benchmarks, for which detailed comparisons between simulations and measurements are reported.

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Section: Am Processesmentioning

confidence: 99%

Section: Microwave Filtersmentioning

confidence: 99%

Additive manufacturing of Ku/K‐band waveguide filters: a comparative analysis among selective‐laser melting and stereo‐lithography

Peverini

Addamo

Lumia

et al. 2017

IET Microwaves, Antennas & Propagation

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“…Therefore, overall mass, as well as integration effort, can be reduced. Further information was published in [7] at EuCAP 2016.…”

Section: Ku-band Orthomode Transducer (Omt)mentioning

confidence: 99%

“…The developed hardware showed a good RF performance and a high potential to save costs. Based on this knowledge Airbus Defence and Space in the UK and Germany performed in 2016 further investigations for enhancements to satellite feed chain performance, testing and lead-time using additive manufacturing [6] as well as a comparison of an ALM Ku-band OMT and a conventionally manufactured OMT [7]. Also in 2016 feed chain components for a Ku-band scanning lens array antenna were published by MDA Space and Robotics Ltd [8].…”

Section: Introductionmentioning

confidence: 99%

Waveguide components for space applications manufactured by additive manufacturing technology

Kilian

Hartwanger

Schneider

et al. 2017

IET Microwaves, Antennas & Propagation

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This study investigates the use of novel manufacturing technologies for space antenna feed chain systems. A comparison between conventional and advanced manufacturing technologies concerning the radio‐frequency (RF) performance was made, in order to derive design rules for the novel manufacturing technology. Waveguide runs as well as feed chain components were redesigned by using these design rules. Therefore, mainly elliptical and circular waveguide sections were used. Different components were combined to save mass and power losses. Additive layer manufacturing (ALM) was chosen to build feed chain components in order to investigate the advantages of ALM compared to conventional technologies. This study concludes with an outlook on future opportunities of advanced manufacturing technologies for RF space applications as well as ongoing development activities.

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“…Its advantages include low cost, light weight, and greater flexibility for the manufactured design structure. Through 3D printing, several OMTs have already been fabricated as single pieces [21], [25], [29]- [31].…”

Section: Introductionmentioning

confidence: 99%

Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports

YUKAWA,

USHIJIMA,

TAKAHASHI

et al. 2024

IEICE Trans. Electron.

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A T-junction orthomode transducer (OMT) is a waveguide component that separates two orthogonal linear polarizations in the same frequency band. It has a common circular waveguide short-circuited at one end and two branch rectangular waveguides arranged in opposite directions near the short circuit. One of the advantages of a T-junction OMT is its short axial length. However, the two rectangular ports, which need to be orthogonal, have different levels of performance because of asymmetry. We therefore propose a uniaxially symmetrical T-junction OMT, which is configured such that the two branch waveguides are tilted 45 • to the short circuit. The uniaxially symmetrical configuration enables same levels of performance for the two ports, and its impedance matching is easier compared to that for the conventional configuration. The polarization separation principle can be explained using the principles of orthomode junction (OMJ) and turnstile OMT. Based on calculations, the proposed configuration demonstrated a return loss of 25 dB, XPD of 30 dB, isolation of 21 dB between the two branch ports, and loss of 0.25 dB, with a bandwidth of 15% in the K band. The OMT was then fabricated as a single piece via 3D printing and evaluated against the calculated performance indices.

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Ku-band sidearm orthomode transducer manufactured by additive layer manufacturing

Cited by 19 publications

References 1 publication

Additive manufacturing of Ku/K‐band waveguide filters: a comparative analysis among selective‐laser melting and stereo‐lithography

Additive manufacturing of Ku/K‐band waveguide filters: a comparative analysis among selective‐laser melting and stereo‐lithography

Waveguide components for space applications manufactured by additive manufacturing technology

Uniaxially Symmetrical T-Junction OMT with 45° -Tilted Branch Waveguide Ports

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