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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Wang, Hui
Queen's University Belfast
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024CNC-Machined and 3D-Printed Metal G-band Diplexers for Earth Observation Applicationscitations
- 2023Evaluation of 3D printed monolithic G-band waveguide componentscitations
- 2023Machine learning on spectral data from miniature devices for food quality analysis - a case study
- 2023Halide-guided active site exposure in bismuth electrocatalysts for selective CO2 conversion into formic acidcitations
- 2023Halide-guided active site exposure in bismuth electrocatalysts for selective CO2 conversion into formic acid
- 2022A 3D printed 300 GHz waveguide cavity filter by micro laser sinteringcitations
- 2022D-band waveguide diplexer fabricated using micro laser sinteringcitations
- 2022Waste‐Derived Copper‐Lead Electrocatalysts for CO<sub>2</sub> Reductioncitations
- 2022Waste-Derived Copper-Lead Electrocatalysts for CO 2 Reductioncitations
- 2022Waste-Derived Copper-Lead Electrocatalysts for CO2 Reduction
- 2021125 GHz frequency doubler using a waveguide cavity produced by stereolithographycitations
- 2021Trileucine as a dispersibility enhancer of spray-dried inhalable microparticlescitations
- 2016Thermoelectric Properties of Polymeric Mixed Conductorscitations
- 2014Self-assembled nano- to micron-size fibers from molten R11Ni4In9 intermetallicscitations
- 2014Semi-metallic polymerscitations
- 2014Semi-metallic polymerscitations
- 2013Spatially resolved investigation of strain and composition variations in (In,Ga)N/GaN epilayerscitations
- 2013Exploring suitable oligoamines for phantom ring-closing condensation polymerization with guanidine hydrochloridecitations
- 2013A novel method to measure diffusion coefficients in porous metal-organic frameworks (vol 12, pg 8093, 2010)
- 2010A metadata-based approach for multimedia service mashup in IMS
- 2010A novel method to measure diffusion coefficients in porous metal-organic frameworkscitations
- 2010Phenotypic characterization of shewanella oneidensis MR-1 under aerobic and anaerobic growth conditions by using fourier transform infrared spectroscopy and high-performance liquid chromatography analysescitations
- 2010Impact of silver(I) on the metabolism of Shewanella oneidensiscitations
Places of action
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article
125 GHz frequency doubler using a waveguide cavity produced by stereolithography
Abstract
<p>This letter reports on the first Schottky diode frequency doubler with a split-block waveguide structure fabricated by a high-precision stereolithography (SLA) printing process. The printed polymer waveguide parts were plated with copper and a thin protective layer of gold. The surface roughness of the printed waveguide parts has been characterized and the critical dimensions measured, revealing good printing quality as well as a dimensional accuracy that meets the tight tolerance requirements for sub-terahertz active devices. The 62.5 GHz to 125 GHz frequency doubler circuit comprises a 20 m thick GaAs Schottky diode monolithic microwave integrated circuit (MMIC) in the waveguide. The measured doubler provides a maximum output power of 33 mW at 126 GHz for input power of 100 mW. The peak conversion efficiency was about 32% at input powers from 80 to 110 mW. This doubler performance is compared with and found to be nearly identical to the same MMIC housed in a CNC-machined metal package. This work demonstrates the capability of high-precision SLA techniques for producing sub-terahertz waveguide components.</p>