Zobrazeno 1 - 10
of 13
pro vyhledávání: '"Marcel D. Blech"'
Publikováno v:
Advances in Radio Science, Vol 10, Pp 57-62 (2012)
In this paper a reconfigurable ultra-wideband (UWB) impulse radio (IR) transmitter is presented. The IR signal is synthesized at an intermediate frequency (IF) by employing a multi-Nyquist digital-to-analog converter (DAC) with 12 bit resolution and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::063ed77c6a877e6af81335b95fd8c8f8
https://www.adv-radio-sci.net/10/57/2012/
https://www.adv-radio-sci.net/10/57/2012/
Autor:
Arndt T. Ott, Marcel D. Blech, Narek Rostomyan, Thomas F. Eibert, Robert Brem, Christoph J. Eisner
Publikováno v:
IEEE Transactions on Antennas and Propagation. 63:59-68
A compact symmetric discone antenna for the 3 GHz to 20 GHz frequency range is demonstrated. The antenna design is optimized for a good transient response with low angular dependency. This property reduces antenna distortions and simplifies antenna d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28001ea715479a3e308ce1784a676d12
https://doi.org/10.1109/tap.2014.2368574
https://doi.org/10.1109/tap.2014.2368574
Autor:
Andreas Pietsch, Raphael Hellinger, Martin Leibfritz, Daniel Geier, Marcel D. Blech, Florian Maier, Thomas F. Eibert
Publikováno v:
Advances in Radio Science, Vol 8, Pp 243-250 (2010)
A spherical near-field antenna measurement facility employing a time domain hardware gating technique is presented. On-off keyed sinusoidal impulses are used as stimuli requiring wideband antennas with a bandwidth in excess of 400 MHz. The received s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e84e021bb95fc3f91282ddd828a47517
https://doi.org/10.5194/ars-8-243-2010
https://doi.org/10.5194/ars-8-243-2010
Publikováno v:
Advances in Radio Science, Vol 8, Pp 67-73 (2010)
An ultra-wideband (UWB) software defined radio (SDR) implementation is presented. The developed impulse radio (IR) transceiver employs first order bandpass (BP) sampling at a conversion frequency which is four times the channel bandwidth. The subsamp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4b744f94001453ad75aa48ea4ba6764
http://www.adv-radio-sci.net/8/67/2010/ars-8-67-2010.pdf
http://www.adv-radio-sci.net/8/67/2010/ars-8-67-2010.pdf
Autor:
Martin Leibfritz, Marcel D. Blech, Daniel Geier, Raphael Hellinger, A.M. Pietsch, F.A. Maier, Thomas F. Eibert
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 59:387-395
A time-domain spherical near-field antenna measurement system capable of gating out erroneous signal components, which arise due to multipath propagation in nonideal anechoic chambers, is presented. The developed hardware (HW) gating technique evalua
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6a9c7f01a23775eb9af2207d754e566d
https://doi.org/10.1109/tim.2009.2024365
https://doi.org/10.1109/tim.2009.2024365
Autor:
Thomas F. Eibert, Marcel D. Blech
Publikováno v:
IEEE Transactions on Antennas and Propagation. 55:1948-1954
A novel very compact ultrawideband dielectric rod antenna with metallic reflector is presented. The desired HE11 mode on the rod is excited by a biconical dipole fed by a broadband tapered microstrip line balun. The input reflection remains below -10
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f3689c7ffc7dbdd44f60947a5c006ed8
https://doi.org/10.1109/tap.2007.900261
https://doi.org/10.1109/tap.2007.900261
Publikováno v:
Advances in Radio Science, Vol 5, Pp 43-48 (2007)
It is well-known that antenna measurements are error prone with respect to reflections within an antenna measurements test facility. The influence on near-field (NF) measurements with subsequent NF to far-field (FF) transformation can be significantl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d88934760967048df6788d4162a5ad4a
https://doi.org/10.5194/ars-5-43-2007
https://doi.org/10.5194/ars-5-43-2007
Publikováno v:
2009 German Microwave Conference.
This paper presents ultra-wideband (UWB) indoor propagation channel measurement techniques and results for the parameters of an empirical channel model. To analyze the channel impulse response an improved technique is applied to remove the parasitic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::76748f416275bcfe378be98fca272f68
https://doi.org/10.1109/gemic.2009.4815850
https://doi.org/10.1109/gemic.2009.4815850
Publikováno v:
2009 IEEE International Conference on Industrial Technology.
The paper describes the development of a complex antenna system for data communication between the rotating and static part inside a spindle system of a machine tool with revolutions per minute up to 40000 RPM. The system is based on the transponder
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c29cb0e2c4009f317eff723412474f5
https://doi.org/10.1109/icit.2009.4939574
https://doi.org/10.1109/icit.2009.4939574
Publikováno v:
2008 IEEE International Conference on Ultra-Wideband.
An UWB impulse radio (IR) transmitter comprising of standard emitter coupled logic (ECL) components is presented. It has a variable operating frequency ranging from 2-8 GHz and synthesizes Gaussian shaped B-/QPSK modulated impulses. The pulse width a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ff13ffc343e9a02a14acc9efad26b863
https://doi.org/10.1109/icuwb.2008.4653324
https://doi.org/10.1109/icuwb.2008.4653324