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Rydberg, Anders
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Publications (10 of 167) Show all publications
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
Dancila, D., Hoang Duc, L., Jobs, M., Holmberg, M., Hjort, A., Rydberg, A. & Ruber, R. (2017). A compact 10 kW solid-state RF power amplifier at 352 MHz. In: : . Paper presented at 8th International Particle Accelerator Conference 14–19 May 2017, Copenhagen, Denmark (IPAC17).
Open this publication in new window or tab >>A compact 10 kW solid-state RF power amplifier at 352 MHz
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2017 (English)Conference paper, Published paper (Refereed)
Series
Journal of Physics: Conference Series, E-ISSN 1742-6596 ; 874
National Category
Communication Systems
Research subject
Engineering Science with specialization in Microwave Technology
Identifiers
urn:nbn:se:uu:diva-336076 (URN)
Conference
8th International Particle Accelerator Conference 14–19 May 2017, Copenhagen, Denmark (IPAC17)
Projects
ESS
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2017-12-14Bibliographically approved
Dancila, D., Hoang Duc, L., Jobs, M., Holmberg, M., Hjort, A., Rydberg, A. & Ruber, R. (2017). A compact 10 kW solid-state RF power amplifier at 352 MHz. Paper presented at 8th International Particle Accelerator Conference 14–19 May 2017, Copenhagen, Denmark. Journal of Physics, Conference Series, 874, Article ID 012093.
Open this publication in new window or tab >>A compact 10 kW solid-state RF power amplifier at 352 MHz
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2017 (English)In: Journal of Physics, Conference Series, ISSN 1742-6588, E-ISSN 1742-6596, Vol. 874, article id 012093Article in journal (Refereed) Published
Abstract [en]

A compact 10 kW RF power amplifier at 352 MHz was developed at FREIA for the European Spallation Source, ESS. The specifications of ESS for the conception of amplifiers are related to its pulsed operation: 3.5 ms pulse length and a duty cycle of 5%. The realized amplifier is composed of eight kilowatt level modules, combined using a planar Gysel 8-way combiner. The combiner has a low insertion loss of only 0.2 dB, measured at 10 kW peak power. Each module is built around a commercially available LDMOS transistor in a single-ended architecture. During the final tests, a total output peak power of 10.5 kW was measured.

National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:uu:diva-334907 (URN)10.1088/1742-6596/874/1/012093 (DOI)000411396700093 ()
Conference
8th International Particle Accelerator Conference 14–19 May 2017, Copenhagen, Denmark
Projects
ESS
Available from: 2017-11-29 Created: 2017-11-29 Last updated: 2018-03-20Bibliographically approved
Asan, N. B., Carlos, P. P., Redzwan, S., Noreland, D., Hassan, E., Rydberg, A., . . . Augustine, R. (2017). Data Packet Transmission through Fat Tissue for Wireless Intra-Body Networks. IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology
Open this publication in new window or tab >>Data Packet Transmission through Fat Tissue for Wireless Intra-Body Networks
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2017 (English)In: IEEE Journal of Electromagnetics, RF and Microwaves in Medicine and Biology, ISSN 2469-7249Article in journal (Refereed) Epub ahead of print
Abstract [en]

This work explores high data rate microwave communication through fat tissue in order to address the wide bandwidth requirements of intra-body area networks. We have designed and carried out experiments on an IEEE 802.15.4 based WBAN prototype by measuring the performance of the fat tissue channel in terms of data packet reception with respect to tissue length and power transmission. This paper proposes and demonstrates a high data rate communication channel through fat tissue using phantom and ex-vivo environments. Here, we achieve a data packet reception of approximately 96 % in both environments. The results also show that the received signal strength drops by ~1 dBm per 10 mm in phantom and ~2 dBm per 10 mm in ex-vivo. The phantom and ex-vivo experimentations validated our approach for high data rate communication through fat tissue for intrabody network applications. The proposed method opens up new opportunities for further research in fat channel communication. This study will contribute to the successful development of high bandwidth wireless intra-body networks that support high data rate implanted, ingested, injected, or worn devices

Keywords
Intra-body communication, microwave, channel characterization, data packet, Software Defined Radio, GNU Radio, exvivo, phantom
National Category
Engineering and Technology Medical and Health Sciences
Identifiers
urn:nbn:se:uu:diva-335351 (URN)10.1109/JERM.2017.2766561 (DOI)
Projects
Eurostars project under Grant E-9655-COMFORTSwedish Vinnova project under Grant BDAS (2015-04159)Swedish Vinnova project under Reliable, interoperable and secure communication for body network (2017-03568)
Funder
eSSENCE - An eScience CollaborationVINNOVA, 2015-04159VINNOVA, 2017-03568
Available from: 2017-12-04 Created: 2017-12-04 Last updated: 2017-12-05Bibliographically approved
Hamberg, M., Vargas Catalan, E., Karlsson, M., Dancila, D., Rydberg, A., Ögren, J., . . . Vartiainen, I. (2017). Dielectric Laser Acceleration Setup Design, Grating Manufacturing and Investigations Into Laser Induced RF Cavity Breakdowns. In: Proceedings of FEL2017, Santa Fe, NM, USA: . Paper presented at 38th International Free-Electron Laser Conference, Santa Fe, 20-25 Aug..
Open this publication in new window or tab >>Dielectric Laser Acceleration Setup Design, Grating Manufacturing and Investigations Into Laser Induced RF Cavity Breakdowns
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2017 (English)In: Proceedings of FEL2017, Santa Fe, NM, USA, 2017Conference paper, Published paper (Refereed)
National Category
Accelerator Physics and Instrumentation Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-336087 (URN)978-3-95450-179-3 (ISBN)
Conference
38th International Free-Electron Laser Conference, Santa Fe, 20-25 Aug.
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2017-12-14Bibliographically approved
Asan, N. B., Redzwan, S., Rydberg, A., Augustine, R., Noreland, D., Hassan, E. & Voigt, T. (2017). Human fat tissue: A microwave communication channel. In: Proc. 1st MTT-S International Microwave Bio Conference: . Paper presented at IMBIOC 2017, May 15–17, Gothenburg, Sweden. IEEE
Open this publication in new window or tab >>Human fat tissue: A microwave communication channel
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2017 (English)In: Proc. 1st MTT-S International Microwave Bio Conference, IEEE, 2017Conference paper, Published paper (Refereed)
Abstract [en]

In this paper, we present an approach for communication through human body tissue in the R-band frequency range. This study examines the ranges of microwave frequencies suitable for intra-body communication. The human body tissues are characterized with respect to their transmission properties using simulation modeling and phantom measurements. The variations in signal coupling with respect to different tissue thicknesses are studied. The simulation and phantom measurement results show that electromagnetic communication in the fat layer is viable with attenuation of approximately 2 dB per 20 mm. 

Place, publisher, year, edition, pages
IEEE, 2017
Keywords
tissue characterization, transmission medium, biomedical sensor, channel model, phantom measurement
National Category
Medical Engineering
Identifiers
urn:nbn:se:uu:diva-335479 (URN)10.1109/IMBIOC.2017.7965801 (DOI)978-1-5386-1713-7 (ISBN)
Conference
IMBIOC 2017, May 15–17, Gothenburg, Sweden
Projects
Eurostars project (grant E-9655-COMFORT)Swedish Vinnova project (grant BDAS)eSSENCE
Available from: 2017-07-03 Created: 2017-12-05 Last updated: 2017-12-30Bibliographically approved
Asan, N. B., Noreland, D., Hassan, E., Redzwan, S., Rydberg, A., Blokhuis, T. J., . . . Augustine, R. (2017). Intra-body microwave communication through adipose tissue. Healthcare Technology Letters, 4(4), 115-121
Open this publication in new window or tab >>Intra-body microwave communication through adipose tissue
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2017 (English)In: Healthcare Technology Letters, E-ISSN 2053-3713, Vol. 4, no 4, p. 115-121Article in journal (Refereed) Published
National Category
Medical Engineering
Identifiers
urn:nbn:se:uu:diva-334322 (URN)10.1049/htl.2016.0104 (DOI)000408370500001 ()28868147 (PubMedID)
Projects
eSSENCE
Available from: 2017-05-23 Created: 2017-11-22 Last updated: 2017-12-30Bibliographically approved
Dancila, D., Beuerle, B., Shah, U., Rydberg, A. & Oberhammer, J. (2017). Micromachined Cavity Resonator Sensors for on Chip Material Characterisation in the 220–330 GHz band. In: Proceedings of the 47th European Microwave Conference, October 10-12, 2017, Nuremberg, Germany: . Paper presented at 47th European Microwave Conference (EUMC), October 10-12, 2017, Nuremberg, Germany. (pp. 938-941). IEEE
Open this publication in new window or tab >>Micromachined Cavity Resonator Sensors for on Chip Material Characterisation in the 220–330 GHz band
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2017 (English)In: Proceedings of the 47th European Microwave Conference, October 10-12, 2017, Nuremberg, Germany, IEEE, 2017, p. 938-941Conference paper, Published paper (Refereed)
Abstract [en]

A silicon micromachined waveguide on-chip sensor for J-band (220-325 GHz) is presented. The sensor is based on a micromachined cavity resonator provided with an aperture in the top side of a hollow waveguide for sensing purposes. The waveguide is realized by microfabrication in a silicon wafer, gold metallized and assembled by thermocompression bonding. The sensor is used for measuring the complex relative permittivity of different materials. Preliminary measurements of several dielectric materials are performed, demonstrating the potential of the sensor and methodology.

Place, publisher, year, edition, pages
IEEE, 2017
Series
European Microwave Conference, ISSN 2325-0305
Keywords
THz, micromachined waveguides, millimeter-wave, submillimeter-wave, sensors, on-chip
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Microwave Technology
Identifiers
urn:nbn:se:uu:diva-336091 (URN)10.23919/EuMC.2017.8231000 (DOI)000426921500202 ()978-1-5386-3964-1 (ISBN)978-2-87487-047-7 (ISBN)978-2-87487-047-7 (ISBN)
Conference
47th European Microwave Conference (EUMC), October 10-12, 2017, Nuremberg, Germany.
Projects
SSF Swedish Foundation for Strategic Research, Synergy Grant Electronics SEl3-007
Funder
Swedish Foundation for Strategic Research
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2018-06-29Bibliographically approved
Dittmeier, S., Brenner, R., Dancila, D., Gustafsson, L., Rydberg, A. & Yang, S. (2017). Wireless data transmission for high energy physics applications. Paper presented at Connecting The Dots/Intelligent Trackers 2017 - EPJ Web. EPJ Web of Conferences, 150, Article ID 00002.
Open this publication in new window or tab >>Wireless data transmission for high energy physics applications
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2017 (English)In: EPJ Web of Conferences, ISSN 2101-6275, E-ISSN 2100-014X, Vol. 150, article id 00002Article in journal (Refereed) Published
Abstract [en]

Silicon tracking detectors operated at high luminosity collider experiments pose a challenge for current and future readout systems regarding bandwidth, radiation, space and power constraints. With the latest developments in wireless communications, wireless readout systems might be an attractive alternative to commonly used wired optical and copper based readout architectures.

The WADAPT group (Wireless Allowing Data and Power Transmission) has been formed to study the feasibility of wireless data transmission for future tracking detectors. These proceedings cover current developments focused on communication in the 60 GHz band. This frequency band offers a high bandwidth, a small form factor and an already mature technology. Motivation for wireless data transmission for high energy physics application and the developments towards a demonstrator prototype are summarized. Feasibility studies concerning the construction and operation of a wireless transceiver system have been performed. Data transmission tests with a transceiver prototype operating at even higher frequencies in the 240 GHz band are described. Data transmission at rates up to 10 Gb/s have been obtained successfully using binary phase shift keying.

National Category
Communication Systems
Research subject
Engineering Science with specialization in Microwave Technology
Identifiers
urn:nbn:se:uu:diva-336088 (URN)10.1051/epjconf/201715000002 (DOI)000426612900002 ()
Conference
Connecting The Dots/Intelligent Trackers 2017 - EPJ Web
Available from: 2017-12-12 Created: 2017-12-12 Last updated: 2018-06-12Bibliographically approved
Dancila, D., Moossavi, R., Siden, J., Zhang, Z. & Anders, R. (2016). Antennas on Paper Using Ink-Jet Printing of Nano-Silver Particles for Wireless Sensor Networks in Train Environment. Microwave and optical technology letters (Print), 58(4), 754-759
Open this publication in new window or tab >>Antennas on Paper Using Ink-Jet Printing of Nano-Silver Particles for Wireless Sensor Networks in Train Environment
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2016 (English)In: Microwave and optical technology letters (Print), ISSN 0895-2477, E-ISSN 1098-2760, Vol. 58, no 4, p. 754-759Article in journal (Refereed) Published
Abstract [en]

This paper presents the design, manufacturing and measurements of antennas on paper, realized using ink-jetprinting of conductive inks based on nano-silver particles (nSPs). The extraction of the substrate characteristicssuch as the dielectric constant and dielectric loss is performed using a printed ring resonator technique. Thecharacterization of the nSPs conductive inks assesses different parameters as sintering time and temperature.Two antennas are realized corresponding to the most common needs for Wireless Sensor Networks (WSN) inTrains Environment. The first one is a patch antenna characterized by a broadside radiation pattern and suitedfor operation on metallic structures. The second one is a quasi-yagi antenna, with an end fire radiation patternand higher directivity, without requiring a metallic ground plane. Both antennas present a good matching (S11 < -20 dB and S11 < -30 dB, respectively) and acceptable efficiency (55 % and 45 %, respectively) for the papersubstrate used at the center frequency of 2.4 GHz, corresponding to the first channel of the IEEE 802.15.4 band.

Keywords
paper, antennas, ink-jet printing, nano-silver particles, WSN, train
National Category
Telecommunications
Research subject
Engineering Science with specialization in Microwave Technology
Identifiers
urn:nbn:se:uu:diva-269370 (URN)10.1002/mop.29665 (DOI)000371423300005 ()
External cooperation:
Available from: 2015-12-21 Created: 2015-12-15 Last updated: 2017-12-01Bibliographically approved
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