Zobrazeno 1 - 10
of 63
pro vyhledávání: '"Tauno Vähä-Heikkilä"'
Publikováno v:
Saijets, J, Rantakari, P & Vähä-Heikkilä, T 2017, ' Low loss KU-to KA-band analog DMTL phase shifter with 360° phase shift ', Microwave and Optical Technology Letters, vol. 59, no. 6, pp. 1401-1404 . https://doi.org/10.1002/mop.30543
A 15 GHz distributed MEMS transmission line (DMTL) based analog phase shifter was designed and characterized. The designed and measured device was capable of full 360° degree phase shift with lower losses than reported for analog DMTL phase shifters
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc3d845edb7a2560801250021ee56398
http://juuli.fi/Record/0284367017
http://juuli.fi/Record/0284367017
Autor:
Atif Shamim, Tauno Vähä-Heikkilä, Ismo Huhtinen, Kautio Kari, Jameel Showail, P. Rantakari, Eyad Arabi, Markku Lahti
Publikováno v:
Showail, J, Lahti, M, Kautio, K, Arabi, E, Rantakari, P, Huhtinen, I, Vähä-Heikkilä, T & Shamim, A 2018, SIW Cavity Filters with Embedded Planar Resonators in LTCC Package for 5G Applications . in 48th European Microwave Conference (EuMC) ., 8541552, IEEE Institute of Electrical and Electronic Engineers, pp. 757-760, 48th European Microwave Conference, EuMC 2018, Madrid, Spain, 23/09/18 . https://doi.org/10.23919/EuMC.2018.8541552
Two three dimensional (3D) integrated System on Package (SoP) Low Temperature Co-fired Ceramic (LTCC) two-stage SIW single cavity filters with embedded planar resonators are designed, fabricated and tested. The embedded resonators create a two-stage
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::724a7591830d1f74982dfbb5e11dfb59
https://doi.org/10.23919/eumc.2018.8541552
https://doi.org/10.23919/eumc.2018.8541552
Autor:
Tauno Vähä-Heikkilä, Robert Malmqvist, P. Rantakari, C. Samuelsson, Brice Grandchamp, A. Gustafsson, S. Reyaz
Publikováno v:
International Journal of RF and Microwave Computer-Aided Engineering. 25:639-646
This work presents a monolithic integrated reconfigurable active circuit consisting of a W-band RF micro-electro-mechanical-systems MEMS Dicke switch network and a wideband low-noise amplifier LNA realized in a 70 nm gallium arsenide GaAs metamorphic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84a14edba3caab2c9daf347396d2e858
https://doi.org/10.1002/mmce.20902
https://doi.org/10.1002/mmce.20902
Publikováno v:
Hirvonen, M, Vähä-Heikkilä, T, Yrjänä, S, Mäkelä, R & Järvinen, P 2016, ' A 2.4 GHz SiP radio module with embedded antenna and IPD matching and filter circuits ', Microwave and Optical Technology Letters, vol. 58, no. 9, pp. 2062-2064 . https://doi.org/10.1002/mop.29976
In this article, a 2.4 GHz SiP radio module with embedded antenna suitable for various operation scenarios like in free space, on metal, and on body, is presented. The size of the whole module is 13.5 × 7.5 × 4.0 mm3. In addition to the antenna, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a100f49b6a91193d95eb3b9eb120b69
https://cris.vtt.fi/en/publications/e6b1b68b-654c-4459-820d-64d1d054dea7
https://cris.vtt.fi/en/publications/e6b1b68b-654c-4459-820d-64d1d054dea7
Publikováno v:
Bunea, A C, Neculoiu, D, Lahti, M & Vähä-Heikkilä, T 2015, Substrate integrated waveguide fed LTCC microstrip patch antenna for 94 GHz applications . in 2015 International Semiconductor Conference (CAS) . IEEE Institute of Electrical and Electronic Engineers, pp. 127-130, 38th International Semiconductor Conference, Sinaia, Romania, 12/10/15 . https://doi.org/10.1109/SMICND.2015.7355184
This paper presents the design, electromagnetic simulation and experimental results of a 94 GHz microstrip patch antenna with four parasitic patches. The structure was designed for a six tape Low Temperature Co-Fired Ceramics process (LTCC). The ante
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fd89b51dfb4cb12233405496aa3b305b
https://cris.vtt.fi/en/publications/f4a193fa-6ddb-4856-85c8-44f0121cf349
https://cris.vtt.fi/en/publications/f4a193fa-6ddb-4856-85c8-44f0121cf349
Autor:
A. Luukanen, J. Holmberg, T. Karttaavi, Ilkka Marttila, Antti Lamminen, Manu Lahdes, Markku Lahti, Mikko Kantanen, Tauno Vähä-Heikkilä, Pekka Pursula
Publikováno v:
Pursula, P, Karttaavi, T, Kantanen, M, Lamminen, A, Holmberg, J, Lahdes, M, Marttila, I, Lahti, M, Luukanen, A & Vähä-Heikkilä, T 2011, ' 60-GHz millimeter-wave identification reader on 90-nm CMOS and LTCC ', IEEE Transactions on Microwave Theory and Techniques, vol. 59, no. 4, pp. 1166-1173 . https://doi.org/10.1109/TMTT.2011.2114200
A reader module at 60 GHz for high data-rate short-range backscattering-based communications is presented. The reader consists of a CMOS-based oscillator, amplifiers, and a mixer on a low-temperature co-fired ceramic (LTCC) substrate. The filter, pow
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::039926a21538cd7ac915e7fdd0bbd609
https://doi.org/10.1109/tmtt.2011.2114200
https://doi.org/10.1109/tmtt.2011.2114200
Publikováno v:
Arabi, E, Lahti, M, Vähä-Heikkilä, T & Shamim, A 2014, ' A 3-D miniaturized high selectivity bandpass filter in LTCC technology ', IEEE Microwave and Wireless Components Letters, vol. 24, no. 1, pp. 8-10 . https://doi.org/10.1109/LMWC.2013.2285285
Transmission zeros are used to improve the roll-off factors of filters but as a consequence, the out-of-band rejection decreases. In this work, an LTCC filter design is presented which employs a series inductor (implemented as a via hole) to improve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33b10e709605cacdbd721cb2e1d5df5c
https://doi.org/10.1109/lmwc.2013.2285285
https://doi.org/10.1109/lmwc.2013.2285285
Autor:
Zlatoljub D Milosavljevic, Michel Despont, Paul B. Kirby, Richard Stutz, Tauno Vähä-Heikkilä, P. Rantakari, Roland Guerre, Debabrata Bhattacharyya, Ute Drechsler, Robert V. Wright
Publikováno v:
Guerre, R, Drechsler, U, Bhattacharyya, D, Rantakari, P, Stutz, R, Wright, R V, Milosavljevic, Z D, Vähä-Heikkilä, T, Kirby, P B & Despont, M 2010, ' Wafer-level transfer technologies for PZT-based RF MEMS switches ', Journal of Microelectromechanical Systems, vol. 19, no. 3, pp. 548-560 . https://doi.org/10.1109/JMEMS.2010.2047005
We report on wafer-level transfer technologies to integrate PZT-based radio frequency (RF) microelectromechanical-systems switches on CMOS. Such heterogeneous integration can overcome the incompatibility of PZT material with back-end-of-the-line (BEO
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c7a29c36d0a50c7453302cbe4912ede5
https://cris.vtt.fi/en/publications/124bc657-5621-4121-9e05-edc845fe43be
https://cris.vtt.fi/en/publications/124bc657-5621-4121-9e05-edc845fe43be
Autor:
Jussi Varis, Anders Rydberg, Robert Malmqvist, C. Samuelsson, Shi Cheng, P. Rantakari, Tauno Vähä-Heikkilä
Publikováno v:
Cheng, S, Rantakari, P, Malmqvist, R, Samuelsson, C, Vähä-Heikkilä, T, Rydberg, A & Varis, J 2009, ' Switched Beam Antenna Based on RF MEMS SPDT Switch on Quartz Substrate ', IEEE Antennas and Wireless Propagation Letters, vol. 8, pp. 383-386 . https://doi.org/10.1109/LAWP.2009.2018712
This letter demonstrates a 20-GHz radio frequency microelectromechanical system (RF MEMS)-based electrically switchable antenna on a quartz substrate. Two quasi-Yagi antenna elements are monolithically integrated with a single-pole double-throw (SPDT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a1ea67ef2157a35631dfdb11dc925f82
https://doi.org/10.1109/lawp.2009.2018712
https://doi.org/10.1109/lawp.2009.2018712
Publikováno v:
Van Caekenberghe, K & Vähä-Heikkilä, T 2008, ' An analog RF MEMS slotline true-time-delay phase shifter ', IEEE Transactions on Microwave Theory and Techniques, vol. 56, no. 9, pp. 2151-2159 . https://doi.org/10.1109/TMTT.2008.2002236
An analog RF microelectromechanical systems (MEMS) slotline true-time-delay (TTD) phase shifter is presented for use in conjunction with tapered slot antennas, such as the Vivaldi aerial and the double exponentially tapered slot antenna. The design i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a0df24b37e6db1611797a53f0d4d5e18
https://cris.vtt.fi/en/publications/d57c2723-561a-4718-9654-764476fdb5b3
https://cris.vtt.fi/en/publications/d57c2723-561a-4718-9654-764476fdb5b3