Zobrazeno 1 - 10
of 41
pro vyhledávání: '"Jantunen, H. (Heli)"'
Autor:
Jantunen, H. (Heli)
The thesis describes the development of a novel LTCC material system for RF and microwave telecommunication purposes. The work has been divided into three parts. In the first section, the compositional and firing properties of this novel LTCC dielect
Externí odkaz:
http://urn.fi/urn:isbn:951426553X
Autor:
Palvölgyi, P. S. (Petra S.), Kokkonen, M. (Mikko), Sliz, R. (Rafal), Jantunen, H. (Heli), Krisztian Kordas, K. (Krisztian), Myllymäki, S. (Sami)
Several devices of the future generation wireless telecommunication technologies that use bands in THz frequencies for data transmission need low-loss and low-permittivity materials to enable ideal conditions for the propagation of electromagnetic wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::7274a88a21f641cc8f54dc4e527e05d5
http://urn.fi/urn:nbn:fi-fe2023021427120
http://urn.fi/urn:nbn:fi-fe2023021427120
Autor:
Tolvanen, J. (Jarkko), Nelo, M. (Mikko), Alasmäki, H. (Heidi), Siponkoski, T. (Tuomo), Mäkelä, P. (Piia), Vahera, T. (Timo), Hannu, J. (Jari), Juuti, J. (Jari), Jantunen, H. (Heli)
Next-generation, truly soft, and stretchable electronic circuits with material level self-healing functionality require high-performance solution-processable organic conductors capable of autonomously self-healing without external intervention. A per
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::c6eb74042932818843f2f6250d345093
http://urn.fi/urn:nbn:fi-fe2022111565615
http://urn.fi/urn:nbn:fi-fe2022111565615
Autor:
Ghavidel, A. (Ali), Myllymäki, S. (Sami), Kokkonen, M. (Mikko), Tervo, N. (Nuutti), Jantunen, H. (Heli)
This article presents a concept of a dual-mode operated sub-THz frequency radio system by adjusting the lens-antenna distance for either telecommunication or imaging modes. The signal transmittance and imaging capabilities are demonstrated using a co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::63ee0b40c9a85d6f98c76454092371e4
http://urn.fi/urn:nbn:fi-fe2021111755735
http://urn.fi/urn:nbn:fi-fe2021111755735
An antenna cable for enhancing and adjusting radio coverage is proposed. The presented solution is applied to the UHF RFID range of 866 MHz. With this leaky‐wave antenna cable, radio coverage can be efficient and customizable. A 10 × 100 mm resona
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::e795be01e83760ce790e9615a5c4ed96
http://urn.fi/urn:nbn:fi-fe202103248166
http://urn.fi/urn:nbn:fi-fe202103248166
Autor:
Tolvanen, J. (Jarkko), Nelo, M. (Mikko), Hannu, J. (Jari), Juuti, J. (Jari), Jantunen, H. (Heli)
Ultimately soft electronics seek affordable and high mechanical performance universal self-healing materials that can autonomously heal in harsh environments within short times scales. As of now, such features are not found in a single material. Here
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::2ff504fceba0f5c1dca339c93cd2f1de
http://urn.fi/urn:nbn:fi-fe2021102252046
http://urn.fi/urn:nbn:fi-fe2021102252046
Autor:
Xiang, H. (Huaicheng), Kilpijärvi, J. (Joni), Myllymäki, S. (Sami), Yang, H. (Haitao), Fang, L. (Liang), Jantunen, H. (Heli)
The patch antenna of spinel-olivine composite ceramic (Li2ZnGe3O8-Li2ZnGeO4) is designed, which can realize power ratio (59%) and S11 of -14 dB at 5.7 GHz. The low sintering temperature (< 960 °C), low relative permittivity (8.15) and good microwave
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::abe2d3d6fb8532c99817a4880209e74e
http://urn.fi/urn:nbn:fi-fe2020112793436
http://urn.fi/urn:nbn:fi-fe2020112793436
Photoferroelectrics belong to a unique material family that exhibits both photovoltaic and ferroelectric effects simultaneously. The photovoltaic effect is the only known direct method of converting light into electricity and is the basis of solar ce
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::a5c620a7cc5d44c252851428941d388f
http://urn.fi/urn:nbn:fi-fe2019091628420
http://urn.fi/urn:nbn:fi-fe2019091628420
Autor:
Nelo, M. (Mikko), Siponkoski, T. (Tuomo), Kähäri, H. (Hanna), Kordas, K. (Krisztian), Juuti, J. (Jari), Jantunen, H. (Heli)
Piezoelectric materials have a multi-billion dollar impact on the electromechanical transducers market. Their conventional synthesis includes a sintering step (at over 1000 °C) that often hampers direct integration into monolithic devices and confin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od______2423::0167c474215b10cb8f7835e7f4c3544d
http://urn.fi/urn:nbn:fi-fe2019091628343
http://urn.fi/urn:nbn:fi-fe2019091628343