Zobrazeno 1 - 8
of 8
pro vyhledávání: '"Stepan Matejka"'
Publikováno v:
Frontiers in Human Neuroscience, Vol 18 (2024)
Is negation more difficult to process than affirmation? If it is, does processing negation in a second language (L2) compound the difficulty compared to the first language (L1)? This article addresses the issues of difficulties in processing differen
Externí odkaz:
https://doaj.org/article/e593ca360cb14bca8d476c0843a25991
Publikováno v:
Scientific Reports, Vol 14, Iss 1, Pp 1-12 (2024)
Abstract How do comprehenders process negative statements such as The fish is not jumping out of the water? Opinions vary. Some argue for two steps, namely that processing starts off with the representation of the positive/illusory [fish jumping out
Externí odkaz:
https://doaj.org/article/af378e9282be4f9e9654667236abc0b1
Autor:
Stepan Matejka
Publikováno v:
Radioengineering, Vol 25, Iss 2, Pp 390-398 (2016)
Radioengineering. 2016 vol. 25, č. 2, s. 390-398. ISSN 1210-2512
Radioengineering. 2016 vol. 25, č. 2, s. 390-398. ISSN 1210-2512
During the last two decades, new digital modulation systems have appeared in the audio broadcasting. Such broadcasting systems require new transmitters’ concepts to enable the transmission of digitally modulated signals. Moreover, the selected modu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a74a9e85e87ebc5385ab32c19e061e9
https://doi.org/10.13164/re.2016.0390
https://doi.org/10.13164/re.2016.0390
Autor:
Jakub Kakona, David Cerny, F. Vejrazka, Jan Michal, Martin Grabner, Josef Dobes, Jakub Popp, Stepan Matejka
Publikováno v:
Radioengineering, Vol 24, Iss 3, Pp 670-680 (2015)
Radioengineering. 2015 vol. 24, č. 3, s. 670-680. ISSN 1210-2512
Radioengineering. 2015 vol. 24, č. 3, s. 670-680. ISSN 1210-2512
Although practically all function blocks of the satellite navigation receivers are realized using the CMOS digital integrated circuits, it is appropriate to create a sepa- rate low noise antenna preamplifier based on a low noise pHEMT. Such an RF fro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e3b416009111b830ba02634d73d98e5f
http://www.radioeng.cz/fulltexts/2015/15_03_0670_0680.pdf
http://www.radioeng.cz/fulltexts/2015/15_03_0670_0680.pdf
Autor:
Stepan Matejka
Publikováno v:
2015 25th International Conference Radioelektronika (RADIOELEKTRONIKA).
A complete all digital pulse width modulation (PWM) modulator for AM or DRM (using Kahn envelope elimination and restoration technique) radio transmitter has been developed, implemented in FPGA, and measured. The modulating process strictly uses digi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::82fd87dcc3a7675a0843693d53940d71
https://doi.org/10.1109/radioelek.2015.7129022
https://doi.org/10.1109/radioelek.2015.7129022
Autor:
Karel Ulovec, Stepan Matejka
Publikováno v:
Proceedings of 21st International Conference Radioelektronika 2011.
This contribution presents experimental results and conclusions of an experiment focused on the video signal transmission in the frequency bands allocated for the Short Range Devices (SRD). We restrict ourselves only to slow — moving mobile applica
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e82e13ea1fafb48659c1c8cbe97c911d
https://doi.org/10.1109/radioelek.2011.5936438
https://doi.org/10.1109/radioelek.2011.5936438
Autor:
Stepan Matejka
Publikováno v:
20th International Conference Radioelektronika 2010.
The new radio broadcasting standards as Digital Radio Mondiale (DRM) and HD Radio impose new demands on AM transmitters. Nowadays, two modulating designs dominate over the AM transmitter market — Pulse Width Modulation (PWM) technology and digital
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::06961abd6a217de4af988896ee9ed518
https://doi.org/10.1109/radioelek.2010.5478594
https://doi.org/10.1109/radioelek.2010.5478594
Autor:
Stepan Matejka
Publikováno v:
2009 19th International Conference Radioelektronika.
Power amplifiers and mixers are important components in digital radio communications systems, however, they are naturally nonlinear. Nonlinearity generates unwanted spectral components in digitally modulated signals which causes in-channel distortion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8fcc8e83af54ec12b51423f60192118
https://doi.org/10.1109/radioelek.2009.5158745
https://doi.org/10.1109/radioelek.2009.5158745