Alcatel

Rosen Swiss Ag

Rosen 2 Holding Ag

Rüdiger Bauernschmitt

Natalia Rodriguez

Martin Brücher

Michael Black

Ralf Schlesiger

Burkhard Reetmeyer

Gerd Wölfle

Martin BRÜCHER

A method is provided for non-invasively determining properties of a multiphase flow which flows through an electrically conductive object. Using a single set-up having a plurality of EMAT transducers, at least one property of the multiphase flow is determined by means of at least one of a plurality of measurement methods. A device is also provided for non-invasively determining properties of a multiphase flow which flows through an electrically conductive object. At least four EMAT transducers are positionable upstream along a first object cross-section at or near the object wall and at least four EMAT transducers are positionable downstream along a second object cross-section at or near the object wall.

Method and device for non-invasively determining properties of a multiphase flow

A method for noninvasive determination of the flow or the flow rate in an electrically conductive object, through which a gaseous medium flows, by an acoustic flow meter, wherein an emitting transducer is arranged on the object wall&#x2014;and a receiving transducer is arranged spaced apart in the longitudinal direction of the object on the object wall, an ultrasonic wave is generated in the object by the emitting transducer, which is partially coupled as a longitudinal wave into the medium, and a useful signal, which at least partially results due to the longitudinal wave, is detected by the receiving transducer, the flow rate is determined from the useful signal via an evaluation device, the emitting transducer is arranged in a first position in the circumferential direction around a longitudinal axis of the object and the receiving transducer is arranged in a second position, varied in relation to the first position around the longitudinal axis, outside the main beam of the ultrasonic wave, and the width of the main beam is restricted to a sector between two contact points of a sensor mechanism.

Ultrasonic gas flow measuring device and method for evaluating useful signals of a transducer in a conductive pipe

An improved method of predistorting a transmit signal is disclosed whereby the distortions occurring in all nonlinear subassemblies are compensated for using a particularly suited feedback signal. Also disclosed are a transmitter, a transmitting station, and a communications system using the method. The transmit signal, before being converted to the desired radio frequency, is digitally predistorted at baseband by digital signal processing means which are controlled by the feedback signal. This signal is generated by a detector measuring the spectral power of the transmit signal at the desired radio frequency both within a first frequency range, which lies within the transmission spectrum, and within a second frequency range, which lies outside the transmission spectrum. The digital predistortion disclosed is flexibly parameterized and is adapted by the feedback control to the current behavior of the transmitter subassemblies.

Method of and apparatus for predistorting a transmit signal

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Linkenheim-Hochstetten, Germany

Rüdiger Bauernschmitt