Zobrazeno 1 - 10
of 32
pro vyhledávání: '"Jan Svedin"'
Publikováno v:
International Journal of Microwave and Wireless Technologies. 13:602-613
This paper describes a small unmanned aerial vehicle (UAV)-based synthetic aperture radar (SAR) system using low-cost radar (5–6 GHz), position (GNSS/RTK) and attitude (IMU) sensors for the generation of high-resolution images. Measurements using s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6d7438d6bf8d35a470ffeba6e4050da4
https://doi.org/10.1017/s1759078721000416
https://doi.org/10.1017/s1759078721000416
Publikováno v:
2020 17th European Radar Conference (EuRAD).
This paper describes a small UAV-based SAR using low-cost 5–6 GHz radar, GNSS/RTK and IMU sensors for generation of high-resolution images. Measurements using straight as well as highly curved flight trajectories show range and cross-range lobe wid
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::64a7a99de0d2ace2278aa1ed254fbde1
https://doi.org/10.1109/eurad48048.2021.00055
https://doi.org/10.1109/eurad48048.2021.00055
Autor:
Vladimir Drakinskiy, Mikael Karlsson, Tomas Bryllert, Jan Stake, Nuria Llombart, Jan Svedin, Erio Gandini
Publikováno v:
Passive and Active Millimeter-Wave Imaging XXI.
We present a 220 GHz imaging radar prototype that has been developed in the European Defense Agency (EDA) project TIPPSI. The purpose of the development was to demonstrate short-range high-resolution 3D imaging for security applications at checkpoint
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7020ddc94ce35500dfdc8b089ecd6d5
https://doi.org/10.1117/12.2309648
https://doi.org/10.1117/12.2309648
Publikováno v:
2017 47th European Microwave Conference (EuMC).
A silicon micromachined waveguide hybrid coupler for J-band (220-325 GHz) applications is presented. The coupling and phase shifting functions are realised using a 90° ridged waveguide phase shifter, a joint waveguide section and a port extension. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a117ed7f5c97fffdf4d11f5fb73d466d
https://doi.org/10.23919/eumc.2017.8230923
https://doi.org/10.23919/eumc.2017.8230923
Publikováno v:
IEEE Transactions on Terahertz Science and Technology
IEEE Transactions on Terahertz Science and Technology, 7(4)
IEEE Transactions on Terahertz Science and Technology, 7(4)
In this paper, the practical tradeoffs for designing submillimeter wavelength imagers based on optomechanical systems combined with focal plane arrays (FPAs) are presented. The architecture of these systems differs for operation at short and long ran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2456e2e2b92965d5ced834852490bb53
A J-band (220-325 GHz) silicon micromachined waveguide power divider based on a tee-shape topology is presented. To characterise the power divider a test circuit was designed with one output path connected using a low return loss 90° multi-stepped b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4b4d915637a422249f35c40d1b4b1767
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217909
http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-217909
Publikováno v:
2015 European Radar Conference (EuRAD).
We discuss sparse and compact phased array antenna architectures based on the use of multiple transmit antennas in order to reduce the number of needed receiver channels. We also present the design of a sparse and compact phased array antenna togethe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::15bcd52962d7f8134b644a08dc59a3b5
https://doi.org/10.1109/eurad.2015.7346260
https://doi.org/10.1109/eurad.2015.7346260
Publikováno v:
2015 40th International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz).
The European Defense Agency project TIPPSI aims to produce a phenomenology study to evaluate the performance of standoff imagers for security applications at submillimeter frequencies. In this context, a modular optical architecture is being develope
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb7044ec9787e2ab290cc871f100ad48
https://doi.org/10.1109/irmmw-thz.2015.7327538
https://doi.org/10.1109/irmmw-thz.2015.7327538
Autor:
Sten E. Gunnarsson, Arnulf Leuther, Niklas Wadefalk, Herbert Zirath, Serguei Cherednichenko, Jan Svedin, Iltcho Angelov, Ingmar Kallfass
Publikováno v:
IEEE Microwave and Wireless Components Letters. 18:284-286
This letter presents the design and characterization of a 220 GHz microstrip single-chip receiver monolithic microwave integrated circuit (MMIC) with an integrated antenna in a 0.1 mu m GaAs metamorphic high electron mobility transistor technology. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6228d18f57a2c0e5c95c375324dfdbd
https://doi.org/10.1109/lmwc.2008.918959
https://doi.org/10.1109/lmwc.2008.918959
Autor:
Sten E. Gunnarsson, Morteza Abbasi, Rumen Kozhuharov, Jan Svedin, Iltcho Angelov, Niklas Wadefalk, Herbert Zirath, Vessen Vassilev
Publikováno v:
2012 IEEE/MTT-S International Microwave Symposium Digest.
Integrated millimterwave heterodyne receivers for remote sensing applications in the frequency range 90 to 220 GHz utilizing active mHEMT devices have been designed, fabricated and characterized. Packages for the MMICs have also been designed and eva
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c1317317881bce2441eb1a64eb6038f8
https://doi.org/10.1109/mwsym.2012.6259748
https://doi.org/10.1109/mwsym.2012.6259748