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- JÃ¼rgen Heidrich, Daniel Brenk, +4 authors Robert Weigel
- IEEE Microwave Magazine
- 2010

This article has offered a brief excerpt of the basic requirements and current development trends in (passive) RFID systems in different application areas. Even after reaching a sophisticated stateâ€¦ (More)

- Markus Pichler, Stefan Schwarzer, Andreas Stelzer, Martin Vossiek
- IEEE Journal of Selected Topics in Signalâ€¦
- 2009

The addition of positioning capabilities to low-cost communications such as IEEE 802.15.4 compliant (ZigBee) networks can open up interesting markets, in particular if existing hardware and standardâ€¦ (More)

- JÃ¼rgen Heidrich, Daniel Brenk, Jochen Essel, Georg Fischer, Robert Weigel, Stefan Schwarzer
- 2009 IEEE MTT-S International Microwave Workshopâ€¦
- 2009

This paper describes the theory of distance measurements with passive UHF transponders using the principle of modulated backscattering. The method was evaluated with the analogue frontend of aâ€¦ (More)

- Stefan Schwarzer
- 1995

We describe a method to address eeciently problems of two-phase ow in the regime of low but non-zero particle Reynolds number and negligible Brownian motion. One of the phases is an incompressibleâ€¦ (More)

- JÃ¼rgen Heidrich, Daniel Brenk, Jochen Essel, Stefan Schwarzer, Robert Weigel, Georg Fischer
- 2010 Conference Proceedings ICECom, 20thâ€¦
- 2010

This paper evaluates the implementation of a Round-Trip-of-Flight (RToF) technique into a UHF transponder. Different possible transponder architectures are investigated and measurement results for aâ€¦ (More)

We present a simulation technique for the direct simulation of the motion of spherical particles suspended in fluids at low Reynods numbers. We use this method to simulate bidisperse suspensions atâ€¦ (More)

- Kai Hh Ooer, Matthias M Uller, Stefan Schwarzer, Bernd Wachmann
- 1998

We present two Euler-Lagrangian simulation methods for particles immersed in uids described by the Navier-Stokes equation. These implement the coupling between particle and uid phase by (i) directâ€¦ (More)

- Gregory Giuliani, Nicolas Ray, +7 authors Anthony Lehmann
- IJAGR
- 2011

Understanding the complexity of earth-system processes is crucial to convey improved information on the environment to decision-makers and the general public. Addressing this need by sharingâ€¦ (More)

The complexity of parallel computing hardware calls for software that eases the development of numerical models for researchers that do not have a deep knowledge of the platformsâ€™ communicationâ€¦ (More)

- Kai Hh Ooer, Stefan Schwarzer, Bernd Wachmann
- 1999

We use a recently developed algorithm to simulate and study the physics of bidis-perse suspensions of rigid spheres. We compute the settling velocity as a function of the ratio a L =a S 1 of theâ€¦ (More)