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Publications (10 of 80) Show all publications
Hoang Duc, L., Nguyen Dinh The, A., Bach Gia, D., Jobs, M., Ruber, R. & Dancila, D. (2018). A new high-power low-loss air-dielectric stripline Gysel divider/combiner for particle accelerator applications at 352 MHz. IET Control Theory & Applications (5), 264-267
Open this publication in new window or tab >>A new high-power low-loss air-dielectric stripline Gysel divider/combiner for particle accelerator applications at 352 MHz
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2018 (English)In: IET Control Theory & Applications, ISSN 1751-8644, E-ISSN 1751-8652, no 5, p. 264-267Article in journal (Refereed) Published
Abstract [en]

This study presents a new two-way Gysel combiner based on an air-dielectric stripline which allows to handle very high radio-frequency power levels with low-loss suitable for power combination in accelerator applications. The insertion loss of the combiner is 0.1 dB (2%). A thick stripline implementation allows improving the power capability in both continuous wave (CW) and pulsed operation. In addition, a mechanical tuner allows compensating for assembly and fabrication discrepancies. A methodology of designing the Gysel combiner as well as high-power measurements up to 22 kW in pulsed mode are presented. Simulations and measurements are in very good agreement.

National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-334913 (URN)10.1049/joe.2017.0793 (DOI)000436345200003 ()
Projects
ESS
Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2018-09-26Bibliographically approved
Jobs, M., Dancila, D., Eriksson, J. & Ruber, R. (2018). An 8-1 Single-Stage 10-kW Planar Gysel Power Combiner at 352 MHz. IEEE Transactions on Components, Packaging, and Manufacturing Technology, 8(5), 851-857
Open this publication in new window or tab >>An 8-1 Single-Stage 10-kW Planar Gysel Power Combiner at 352 MHz
2018 (English)In: IEEE Transactions on Components, Packaging, and Manufacturing Technology, ISSN 2156-3950, E-ISSN 2156-3985, Vol. 8, no 5, p. 851-857Article in journal (Refereed) Published
Abstract [en]

A compact single-stage 8-1 Gysel Combiner in planar technology for operation with 352-MHz pulses with peak output power of 10 kW has been designed, manufactured, and tested. The module has 0.2-dB insertion loss when operated at nominal power, and the return loss of all ports is 20 dB or better. The module was operated using 3.3-ms pulses at 14-Hz repetition rate without any signs of degradation, thermal heating, or arcing. The new design makes use of inclusions of weakly coupled lines in the common point section of the Gysel combiner. It is possible to adjust port imbalances caused by parasitic line coupling in the system for optimum performance at a given frequency by adjusting the coupling.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2018
Keywords
Gysel, power combiners, UHF devices
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-356323 (URN)10.1109/TCPMT.2018.2811710 (DOI)000431915800017 ()
Available from: 2018-07-26 Created: 2018-07-26 Last updated: 2018-07-26Bibliographically approved
Book, S., Hoang Duc, L. & Dancila, D. (2018). Design, fabrication and measurement of 1kW Class-E amplifier at 100 MHz. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25, 2018.
Open this publication in new window or tab >>Design, fabrication and measurement of 1kW Class-E amplifier at 100 MHz
2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-369189 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25, 2018
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-14Bibliographically approved
Holmberg, M., Dancila, D., Rydberg, A., Hjörvarsson, B., Jansson, U., Marattukalam, J. J., . . . Andersson, J. (2018). Direct metal laser sintering printed millimeter and submillimeter waveguides. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25 2018.
Open this publication in new window or tab >>Direct metal laser sintering printed millimeter and submillimeter waveguides
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2018 (English)Conference paper, Poster (with or without abstract) (Other academic)
National Category
Telecommunications
Identifiers
urn:nbn:se:uu:diva-369172 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25 2018
Funder
Swedish Foundation for Strategic Research , GMT14-0048
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-11Bibliographically approved
Aziz, I., Rydberg, A. & Dancila, D. (2018). Electromagnetically Coupled Multilayer Patch Antenna for 60 GHz Communications. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25, 2018..
Open this publication in new window or tab >>Electromagnetically Coupled Multilayer Patch Antenna for 60 GHz Communications
2018 (English)Conference paper, Oral presentation only (Refereed)
National Category
Telecommunications
Identifiers
urn:nbn:se:uu:diva-369169 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25, 2018.
Funder
VINNOVA, 2016-01800
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2019-01-17Bibliographically approved
Haulin, L. & Dancila, D. (2018). Homodyne Detection Based System for Continuous Glucose Monitoring. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25, 2018.
Open this publication in new window or tab >>Homodyne Detection Based System for Continuous Glucose Monitoring
2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-369180 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25, 2018
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-14Bibliographically approved
Hoang Duc, L., Bhattacharyya, A., Olsson, J. & Dancila, D. (2018). Implementation of a Highly Efficient Solid State RF Power Source for Superconducting Cavities. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25, 2018.
Open this publication in new window or tab >>Implementation of a Highly Efficient Solid State RF Power Source for Superconducting Cavities
2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-369239 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25, 2018
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-14Bibliographically approved
Dancila, D., Beuerle, B., Shah, U., Augustine, R., Gustafsson, A., Oberhammer, J. & Rydberg, A. (2018). Leaky Wave Antenna at 300 GHz in KTH’s Micromachined Waveguide Technology. In: : . Paper presented at AntennEMB Symposium, Lund, May 24-25, 2018.
Open this publication in new window or tab >>Leaky Wave Antenna at 300 GHz in KTH’s Micromachined Waveguide Technology
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2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Telecommunications
Identifiers
urn:nbn:se:uu:diva-369240 (URN)
Conference
AntennEMB Symposium, Lund, May 24-25, 2018
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-14Bibliographically approved
Dancila, D., Beuerle, B., Shah, U., Rydberg, A. & Oberhammer, J. (2018). Micromachined Cavity Resonator Sensor for on Chip Material Characterisation at 260 GHz. In: : . Paper presented at GigaHertz Symposium, Lund, May 24-25, 2018.
Open this publication in new window or tab >>Micromachined Cavity Resonator Sensor for on Chip Material Characterisation at 260 GHz
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2018 (English)Conference paper, Oral presentation with published abstract (Other academic)
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-369241 (URN)
Conference
GigaHertz Symposium, Lund, May 24-25, 2018
Funder
Swedish Foundation for Strategic Research , SE13 - 007
Available from: 2018-12-11 Created: 2018-12-11 Last updated: 2018-12-14Bibliographically approved
Holmberg, M., Dancila, D., Rydberg, A., Hjörvarsson, B., Jansson, U., Marattukalam, J. J., . . . Andersson, J. (2018). On Surface Losses in Direct Metal Laser Sintering Printed Millimeter and Submillimeter Waveguides. Journal of Infrared, Millimeter and Terahertz Waves, 39(6), 535-545
Open this publication in new window or tab >>On Surface Losses in Direct Metal Laser Sintering Printed Millimeter and Submillimeter Waveguides
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2018 (English)In: Journal of Infrared, Millimeter and Terahertz Waves, ISSN 1866-6892, E-ISSN 1866-6906, Vol. 39, no 6, p. 535-545Article in journal (Refereed) Published
Abstract [en]

Different lengths of WR3 (220-330 GHz) and WR10 (75-110 GHz) waveguides are fabricated through direct metal laser sintering (DMLS). The losses in these waveguides are measured and modelled using the Huray surface roughness model. The losses in WR3 are around 0.3 dB/mm and in WR10 0.05 dB/mm. The Huray equation model is accounting relatively good for the attenuation in the WR10 waveguide but deviates more in the WR3 waveguide. The model is compared to finite element simulations of the losses assuming an approximate surface structure similar to the resulting one from the DMLS process.

Place, publisher, year, edition, pages
SPRINGER, 2018
Keywords
Millimeterwave, 3D-metal-printed, Waveguide loss
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-356385 (URN)10.1007/s10762-018-0470-x (DOI)000431255500005 ()
Funder
Swedish Foundation for Strategic Research
Available from: 2018-07-25 Created: 2018-07-25 Last updated: 2018-07-25Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-2217-8032

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