Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Johann-Christoph Scheytt"'
Autor:
Johann-Christoph Scheytt, Mahdi Khafaji, Klaus Tittelbach-Helmrich, Gunter Fischer, Daniel Micusik, Corrado Carta, Frank Ellinger
Publikováno v:
IET Circuits, Devices & Systems. 8:459-468
Recent high-speed digital-to-analogue converters (DACs) cannot be easily characterised at their highest rate because of the very high cost of commercially available bit-error rate testers at the required DACs rate. Among possible solutions, an inexpe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::87874435194dc36e41e6170e60cfb4a3
https://doi.org/10.1049/iet-cds.2013.0333
https://doi.org/10.1049/iet-cds.2013.0333
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 60:2524-2531
A tunable fourth-order bandpass ΔΣ modulator (BDSM) designed and fabricated in 0.25μm SiGe BiCMOS technology is presented. The designed modulator relaxes switching conditions for the amplification stage of the switch-mode power amplifier in compar
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::da73f40ccfb391e9229c9683809d1783
https://doi.org/10.1109/tmtt.2012.2203143
https://doi.org/10.1109/tmtt.2012.2203143
Publikováno v:
International Journal of Microwave and Wireless Technologies. 4:275-282
We present a method to realize a low-power and high-speed digital-to-analog converter (DAC) for system-on-chip applications. The new method is a combination of binary-weighted current cells and R-2R ladder and is specially suited for modern BiCMOS te
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::48d55d2bcbb2f6753e26498e0e88f960
https://doi.org/10.1017/s175907871200013x
https://doi.org/10.1017/s175907871200013x
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 59:2254-2264
This paper presents an approach to implement a high-speed binary weighted digital-to-analog converter (DAC). A different current switching mechanism is proposed that improves the dynamic performance of binary weighted DACs. Circuit simulation shows a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f554051d1843e936266fdee5dd294bf6
https://doi.org/10.1109/tmtt.2011.2161879
https://doi.org/10.1109/tmtt.2011.2161879
Autor:
Mohamed Hamouda, Johann-Christoph Scheytt, M. Robens, Y. Borokhovych, Thomas Ußmüller, Robert Weigel, Stefan Heinen, Martin Kmec, Jürgen Sachs, Benjamin Sewiolo, Rolf Kraemer, Ralf Wunderlich
Publikováno v:
Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications
Rijeka : Intechopen.com, Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications 369-438 (2013). doi:10.5772/54987
Ultra-wideband radio technologies for communications, localization and sensor applications / edited by Reiner Thomä, Reinhard H. Knöchel, Jürgen Sachs, Ingolf Willms and Thomas Zwick
Rijeka : Intechopen.com, Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications 369-438 (2013). doi:10.5772/54987
Ultra-wideband radio technologies for communications, localization and sensor applications / edited by Reiner Thomä, Reinhard H. Knöchel, Jürgen Sachs, Ingolf Willms and Thomas Zwick
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42cfd818503ded1714ffe810461bd78c
http://www.intechopen.com/articles/show/title/halos-integrated-rf-hardware-components-for-ultra-wideband-localization-and-sensing
http://www.intechopen.com/articles/show/title/halos-integrated-rf-hardware-components-for-ultra-wideband-localization-and-sensing
Publikováno v:
2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2011).
An on-board differential patch array antenna for 60 GHz applications was designed, fabricated and measured. The antenna was optimized including bond-wires which are used for packaging. A gain of 9.4–12.4 dBi was achieved in a broad frequency range
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::554d843933183043ea9f89c21f73b426
https://doi.org/10.1109/comcas.2011.6105780
https://doi.org/10.1109/comcas.2011.6105780
Autor:
Michelangelo Masini, Hans Gustat, Gunter Fischer, Manfred Berroth, Sonom Olonbayar, Johann-Christoph Scheytt, Johannes Digel, Markus Grozing
Publikováno v:
2011 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems (COMCAS 2011).
A 6 bit and a 7 bit successive approximation register (SAR) analog-to-digital converter (ADC) with conversion rates of up to 80 MS/s are presented in this paper. They will be used in an impulse-radio ultra-wideband (IR-UWB) receiver. The architecture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3dc82e04b563f14ecede541665d0c5b3
https://doi.org/10.1109/comcas.2011.6105902
https://doi.org/10.1109/comcas.2011.6105902
Publikováno v:
2010 IEEE International Conference on Wireless Information Technology and Systems.
The modulators were fabricated in a 0.25 um SiGe BiCMOS process (ƒ T =180GHz). Each chip was mounted on Rogers RO4003 printed circuit board. The BDSMs parameters were measured by applying sine wave and modulated signals. For a sine wave input the mo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::78879a8fa111b3940f4e69669b088e1a
https://doi.org/10.1109/icwits.2010.5611908
https://doi.org/10.1109/icwits.2010.5611908
Autor:
Brian Sveistrup Jensen, Mahdi Khafaji, Johann-Christoph Scheytt, Tom K. Johansen, Viktor Krozer
Publikováno v:
IET Circuits, Devices & Systems. 6:19
This article presents a 20 GHz, 12-bit pipeline accumulator with a reduced number of registers, suitable for direct digital synthesiser (DDS) applications. The accumulator is implemented in the IHP SG25H1 (0.25 μm) SiGe:C technology featuring hetero
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc743945de7bb9fead492420a841350c
https://doi.org/10.1049/iet-cds.2010.0399
https://doi.org/10.1049/iet-cds.2010.0399