2015
conference-paper
OpenAlex
A. Hülsmann, Christian Zech, Mathias Klenner, A. Tessmann et autres
Small and fast objects, for example bullets of caliber 5 to 10 mm, fired from guns like AK-47, can cause serious problems to aircrafts in asymmetric warfare. Especially slow and big aircrafts, like heavy transport helicopters are an easy mark of small …
de, at
(code pays fourni par la source)
2014
conference-paper
OpenAlex
S. Koenig, D. Lopez-Diaz, J. Antes, F. Boes et autres
We demonstrate a wireless sub-THz communication system near 237.5 GHz with one to three carriers and up to 100 Gbit/s. We use an optical heterodyne I/Q Tx and a state-of-the-art active I/Q-MMIC at the Rx.
de, us, at, ch
(code pays fourni par la source)
2014
conference-paper
OpenAlex
D. Lopez-Diaz, S. Koenig, A. Tessmann, F. Boes et autres
In this paper, we present the wireless data transmission of incoherent non-return to zero on-off keying (NRZ-OOK) signals with a data rate of 10 Gbit/s at a carrier frequency of 240 GHz. The transmitter (Tx) and receiver (Rx) are separated by a …
at, de, us
(code pays fourni par la source)
2014
conference-paper
OpenAlex
W. Freude, S. Koenig, D. Lopez-Diaz, J. Antes et autres
High carrier frequencies in the terahertz range 0.1...30 THz are required for wireless data transmission at line rates at or beyond 100 Gbit/s. Here we demonstrate a system with one to three carriers near 237 GHz for (75...100) Gbit/s single-polarization transmission over …
de, at
(code pays fourni par la source)
2013
article
OpenAlex
S. Koenig, Jochen Antes, D. Lopez-Diaz, R. Schmogrow et autres
The feasibility of a wireless link at 220 GHz based on electronic upconversion and downconversion is demonstrated, connecting two optical links at data rates of up to 20 Gbit/s. We use either non-return-to-zero on–off keying with data rates up to 20 Gbit/s …
de
(code pays fourni par la source)
2013
article
OpenAlex
S. Koenig, D. Lopez-Diaz, J. Antes, F. Boes et autres
de, ch
(code pays fourni par la source)
2013
conference-paper
OpenAlex
D. Lopez-Diaz, A. Tessmann, Arnulf Leuther, Ştefan Wagner et autres
Based on active millimeter-wave monolithic integrated circuits (MMICs), a pair of receiver and transmitter modules have been developed and used for wireless data transmission experiments at 240 GHz with data rates of up to 40 Gbit/s. Both modules are driven with a …
de
(code pays fourni par la source)
2013
conference-paper
OpenAlex
J. Antes, S. Koenig, D. Lopez-Diaz, F. Boes et autres
The transmission of complex modulated data signals with data rates up to 30 Gbit/s is successfully realized using a 240 GHz wireless link based on active MMIC components. The paper presents the transmission of QPSK and 8-PSK modulated signals over a distance …
de
(code pays fourni par la source)
2013
conference-paper
OpenAlex
S. Koenig, F. Boes, D. Lopez-Diaz, J. Antes et autres
We demonstrate a single-input single-output photonic wireless link at 237.5 GHz with record 100 Gbit/s data transmission over 20 m. We use an optical heterodyne I/Q transmitter and a state-of-the-art active I/Q-MMIC at the receiver.
de, ch
(code pays fourni par la source)
2013
conference-paper
OpenAlex
S. Koenig, F. Boes, D. Lopez-Diaz, J. Antes et autres
We demonstrate a single-input single-output photonic wireless link at 237.5 GHz with record 100 Gbit/s data transmission over 20 m. We use an optical heterodyne I/Q transmitter and a state-of-the-art active I/Q-MMIC at the receiver.
de
(code pays fourni par la source)
2012
conference-paper
OpenAlex
J. Antes, D. Lopez-Diaz, Ulrich J. Lewark, Ştefan Wagner et autres
A high linearity I/Q bi-directional mixer MMIC using a Lange coupler to generate the 90° phase shift between the I and Q ports for E-band communication systems has been successfully realized in a 50nm mHEMT technology. The mixer achieves a measured conversion …
de
(code pays fourni par la source)
2012
conference-paper
OpenAlex
D. Lopez-Diaz, Ingmar Kallfass, A. Tessmann, Arnulf Leuther et autres
In this paper, we present monolithic integrated I-Q receive and transmit MMICs for wireless data transmission in the frequency range around 240 GHz. The chipset features an RF bandwidth of more than 80 GHz which corresponds to an IF bandwidth of more …
de
(code pays fourni par la source)