Zobrazeno 1 - 10
of 232
pro vyhledávání: '"Ilona Rolfes"'
Autor:
Fawad Sheikh, Andreas Prokscha, Johannes M. Eckhardt, Tobias Doeker, Naveed A. Abbasi, Jorge Gomez-Ponce, Benedikt Sievert, Jan Taro Svejda, Andreas Rennings, Jan Barowski, Christian Schulz, Ilona Rolfes, Daniel Erni, Andreas F. Molisch, Thomas Kurner, Thomas Kaiser
Publikováno v:
IEEE Journal of Microwaves, Vol 3, Iss 1, Pp 289-304 (2023)
In recent years, terahertz (THz) systems have become an increasingly popular area of research thanks to their unique properties such as extremely high data rates towards Tb/s, submillimeter localization accuracy, high resolution remote sensing of mat
Externí odkaz:
https://doaj.org/article/7f3e4b1465624b8786c2f2b1ca087f1d
Autor:
Jonas Schorlemer, Jochen Altholz, Jan Barowski, Christoph Baer, Ilona Rolfes, Christian Schulz
Publikováno v:
Sensors, Vol 24, Iss 3, p 836 (2024)
Supervised machine learning algorithms usually require huge labeled data sets to produce sufficiently good results. For many applications, these data sets are still not available today, and the reasons for this can be manifold. As a solution, the mis
Externí odkaz:
https://doaj.org/article/c4b432794f4242f8965e28ed759fe24c
Autor:
Mohamed Haj Hassan, Benedikt Sievert, Jan Taro Svejda, Aya Mostafa Ahmed, Jan Barowski, Andreas Rennings, Ilona Rolfes, Aydin Sezgin, Daniel Erni
Publikováno v:
IEEE Access, Vol 9, Pp 9800-9811 (2021)
Reducing the strong beam divergence inherent to Orbital Angular Momentum waves (also known as OAM waves or vortex waves), a tailored lens and a tailored reflector are presented in this study. The generation of the OAM waves is accomplished by a Unifo
Externí odkaz:
https://doaj.org/article/5306d0105ac34bd0ae9e2cf6f8b3157b
Autor:
Aman Batra, Jan Barowski, Dilyan Damyanov, Michael Wiemeler, Ilona Rolfes, Thorsten Schultze, Jan C. Balzer, Diana Gohringer, Thomas Kaiser
Publikováno v:
IEEE Journal of Microwaves, Vol 1, Iss 2, Pp 574-585 (2021)
Synthetic aperture radar (SAR) is a well-known imaging technique and most commonly used up to the microwave frequency spectrum (below 30 GHz) which provides spatial resolution in the sub-m range. To enhance the resolution, higher frequency spectra su
Externí odkaz:
https://doaj.org/article/2314ef5d3a93402e8335875cc73b67f5
Publikováno v:
Materials Research Express, Vol 7, Iss 12, p 125301 (2020)
To scan a vehicle’s environment frequency modulated continuous wave (FMCW) radar sensors are essential. The implementable driver assistance systems based on these sensors increase the comfort of an automobile. When integrating them into the car, th
Externí odkaz:
https://doaj.org/article/2cd03688662f4c90944e84f0df36b71a
Publikováno v:
International Journal of Microwave and Wireless Technologies. :1-11
This work introduces a method for plasma state supervision, based on a frequency-modulated continuous wave radar sensor and a suitable signal evaluation enabling a continuous supervision method for the plasma state. Highly precise phase evaluation of
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 69:5145-5159
Radar imaging using the synthetic aperture radar (SAR) principle is a common method to obtain information about e.g., the surface of a target. However, most image formation algorithms for such systems assume (quasi-)static measurements. This may lead
Autor:
Ilona Rolfes, Moritz Oberberg, Thomas Musch, Peter Awakowicz, Ralf Peter Brinkmann, Michael Friedrichs, Christian Schulz, Chunjie Wang, Jens Oberrath, Dennis Pohle, Martin Lapke, Junbo Gong, Thomas Mussenbrock
Publikováno v:
IEEE Transactions on Plasma Science. 49:3293-3298
During the last decade a new probe design for active plasma resonance spectroscopy, the multipole resonance probe (MRP), was proposed, analyzed, developed, and characterized in two different designs: the spherical MRP (sMRP) and the planar MRP (pMRP)
Publikováno v:
2022 Asia-Pacific Microwave Conference (APMC).
Publikováno v:
2022 Asia-Pacific Microwave Conference (APMC).