Fabian Wenger

Smoltek Innovation

This paper considers object detection and 3D estimation using an FMCW radar. The state-of-the-art deep learning framework is employed instead of using traditional signal processing. In preparing the radar training data, the ground truth of an object orientation in 3D space is provided by conducting image analysis, of which the images are obtained t...

This paper considers object detection and 3D estimation using an FMCW radar. The state-of-the-art deep learning framework is employed instead of using traditional signal processing. In preparing the radar training data, the ground truth of an object orientation in 3D space is provided by conducting image analysis, of which the images are obtained t...

This paper outlines a business model for selling safety-related components. The goal is protection of the suppliers' intellectual property whilst providing confidence, to the customer, that the component is safe. The ideas in this paper are based on the Safety Element out of Context-concept as given in ISO 26262. To this we add ideas from IEC 61508...

This paper outlines a business model for selling safety-related components. The goal is protection of the suppliers' intellectual property whilst providing confidence, to the customer, that the component is safe. The ideas in this paper are based on the Safety Element out of Context-concept as given in ISO 26262. To this we add ideas from IEC 61508...

A method of determining a filling level of a product contained in a tank, the method comprising the steps of: a) transmitting an electromagnetic probing signal towards a target area of a surface of the product; b) receiving a reflected probing signal being a reflection of the electromagnetic probing signal at the surface; c) determining a parameter...

A device for using electromagnetic pulses to determine a distance to a surface includes a pulse generator, a real time sampler and a calibration unit having a signal generator for generating a calibration signal with a predefined frequency. In a calibration mode the real time sampler receives the calibration signal, and an average sample time delay...

This paper demonstrates the use of nanoscale impulse radar technology for measuring plug flow velocities with spot measurements. With near-field probes located laterally to the flow direction it is possible to detect inhomogeneous plug flow such as gas bubbles in a liquid and determine their velocity from dynamic clutter removal of the time-resolve...

We present a novel technique to calculate the transmission and reflection properties of inhomogeneous lossy transmission lines. It is based on a perturbation expansion of the relevant telegrapher's equation around the homogeneous solution. The method reveals that the transmission properties are unaffected to first order in the impedance and admitta...

At present, standards for broadband wireless multimedia communications in the 5 GHz band are being developed in Europe as well as in the USA and Japan. HIPERLAN/2 is an upcoming standard which is being specified by the ETSI Project BRAN and is intended to be finished in April 2000. The physical layers of the three systems will be well-harmonized wh...

We report tunneling measurements on a large number of bicrystal YBa2Cu3O7-delta Josephson junctions. The orientations of the bicrystals relative to their boundary was varied over 80° while the misorientation angle was kept fixed at 32°. A strong anisotropy in the characteristic voltage IcRn of the Josephson junctions in the a-b plane was observed....

We have designed an experiment where the Josephson barrier, in our case the misorientation angle of a bicrystal grain boundary, is kept constant, while the direction of the superconducting wave function at the barrier varies. The Josephson current in these junctions is strongly anisotropic. The characteristic voltage IcRn depends on the crystal ori...

We analyze the Raman-scattering response in a two-dimensional dx2-y2-wave superconductor and point out a strong suppression of relative intensity in the screened A1g channel compared to the B1g channel for a generic tight-binding model. This is in contrast with the observed behavior in high-Tc superconductors.

We report tunneling measurements on a large number of bicrystal YBa_2Cu_3O_7-delta Josephson junctions. The orientation of the bicrystals relative to their boundary was varied over 80^circ while the misorientation angle was kept fixed at 32^circ. A strong anisotropy in the characteristic voltage V_c=I_cRn of the Josephson junctions in the a-b plane...

We report tunneling measurements on specially designed YBa2Cu3O7−δ bicrystal Josephson junctions. A strong anisotropy in the characteristic voltage IcRn of the Josephson junctions in thea-b plane was observed. The theoretical analysis shows that the tunneling can be explained as combined effect of the presence of nodes in the superconducting wave f...

The influence of weak non-magnetic disorder on the single-particle density of states ϱ(ω) of two-dimensional electron systems with a conical spectrum is studied. We use a non-perturbative approach, based on the replica trick with subsequent mapping of the effective action onto a one-dimensional model of interacting fermions, the latter being treate...

We show that weak static random potentials have pronounced effects on the quasiparticle states of a 2Dd-wave superconductor close to a node. We prove that the vertex correction coming from the simplest crossed diagram is important even for a nonmagnetic potential. The leading frequency and momentum dependent logarithmic singularities in the self-en...

Influence of weak nonmagnetic impurities on the single-particle density of states $\rho(\omega)$ of two-dimensional electron systems with a conical spectrum is studied. We use a nonperturbative approach, based on replica trick with subsequent mapping of the effective action onto a one-dimensional model of interacting fermions, the latter being trea...

Using group-theoretical methods, we classify into 11 symmetry classes all translationally invariant singlet-paired superconducting-gap functions whose quasiparticle energy spectrum preserves the symmetry of a tetragonal crystal. We show that for the gap function of symmetry Deltad+(coskx-cosky) the two logarithmic singularities in the density of st...