Rohde and Schwarz Gmbh & Co. Kg

Martin Oetjen

Gottfried Holzmann

Martin Simon

Matthias Jelen

Martin Roth

Albert Moser

Rolf Lorenzen

Waldemar Henrich

Markus Gallhauser

Werner Mittermaier

Moritz Harteneck

Michael Feilen

Heino Gerlach

Henry Gropp

Roland Mahr

Mattias Jelen

Falko Fiechtner

Esmeralda Strobel

Simon Schelkshorn

Klaus Neugebauer

A method for determining a transfer function of an RX path of a receiver comprises applying a connector signal at a first measurement time. A connector signal response signal is measured. A first reference signal is applied and a first detector signal is measured by a detector, in response to the first reference signal passing through a second reference signal insertion path of the receiver. A first reference signal response signal is measured in response to the first reference signal passing through a second reference signal insertion path of the receiver. A second reference signal is applied and a second detector signal and a second reference signal response signal are measured. The transfer function of the RX path of the receiver is determined based on the connector signal, first detector signal, first reference signal response signal, second detector signal, and second reference signal response signal.

Method and system for determining a transfer function of an RX path

A port multiplier for extending ports of a radio communication test instrument comprises an input for receiving at least one input signal, a power supply unit, a control logic, and at least one output for outputting a processed signal. The port multiplier is configured to split the at least one input signal into its different components such that a radio signal component of the input signal is forwarded to the at least one output. A power signal component of the input signal is forwarded to the power supply unit. Further, a control signal component of the input signal is forwarded to the control logic. Moreover, a radio communication test system for testing a device under test is described.

Port multiplier and radio communication test system

A coupler, in particular a resistive coupler, wherein all ports are at least partially or completely arranged in or at a connector. The coupler comprises resistors which are adapted to sum and/or divide the incoming and/or outgoing signal. The resistors are arranged at or in the connector. A sum port and/or at least two dividing ports are arranged on a substrate.

Wideband coupler

A mobile radio testing device for protocol testing of a device under test is provided. The mobile radio testing device comprises a downlink path and an uplink path, wherein the uplink path comprises at least a first analysis mode and a second analysis mode. In this context, the mobile radio testing device includes a demodulation processing unit for analyzing signals from the device under test in the first analysis mode. In addition, the second analysis mode analyzes signals from the device under test without using the demodulation processing unit.

Mobile radio testing device and method for protocol testing

An RF cable includes a connector housing having an RF signal output interface, a cable body having a first end portion connected to the connector housing and a second end portion comprising an RF signal input interface, an RF signal transmission path formed from the RF signal input interface through the cable body and the connector housing to the RF signal output interface, and a power measurement device integrated into the connector housing and configured to measure a power value of an RF signal transmitted through the RF signal transmission path. The RF cable further includes a measurement signal output interface, and a measurement signal transmission line connecting the power measurement device to the measurement signal output interface, the power measurement device being configured to output a measurement signal indicating the measured power value of the RF signal at the measurement signal output interface.

RF cable and cable-bound path loss determination method

A radio frequency measuring device module having a first sub-module, a second sub-module, and a third sub-module. The radio frequency measuring device module has a modular structure. The sub-modules are interchangeably mounted on each other. Further, a radio frequency measuring device is described.

Radio frequency measuring device module and radio frequency measuring device

Techniques related to signal processing include setting up a first operation mode or a second operation mode. In the first operation mode: providing a first analog signal to a first A/D converter by a first switch and a second analog signal to a second A/D by second switch, and converting the first analog signal to a first digital signal by the first A/D and the second analog signal to a second digital signal by the second A/D. In the second operation mode: demodulating a third analog signal to an in-phase signal and a quadrature signal by an I-Q-demodulator, providing the in-phase signal to the first A/D by the first switch, providing the quadrature signal to a second A/D by second switch, converting the in-phase signal to a third digital signal by the first A/D, and converting the quadrature signal to a fourth digital signal by the second A/D.

Signal receiving apparatus and signal receiving method, signal generating apparatus and signal generating method

The invention relates to an electronic assembly comprising a plurality of electronic component groups and a cooling device for cooling the electronic component groups. The cooling device provides a cooling-power distributor. A cooling power of the cooling device can be individually controlled by the cooling-power distributor for every component group. Furthermore, the assembly provides temperature-registering means for every component group for registering a temperature of every component group, and a load-determining device for determining a parameter for every component group which describes the load experienced by a component group on the basis of the temperature registered for this component group. A control unit controls the cooling-power distributor on the basis of the parameters determined for the component groups.

Electronic assembly with cooling device

A circuit for signal conditioning including a first stage with a digital/analog converter, a second stage with an I/Q-modulator, and at least one third stage with a mixer. Instead of a multiplicity of independent oscillators, a shared oscillator is provided for the first, second, and third stages, from an output signal of which a respective oscillator signal and clock-pulse signal for each stage of the first, second, and third stages is derived. The oscillator signal and respective clock-pulse signal of the oscillator are supplied via a frequency divider to at least one stage of the first, second, and third stages, or the oscillator signal of the oscillator is supplied via a frequency multiplier to at least one stage. Also, the oscillator signal of the oscillator is supplied as a reference signal to a frequency synthesizer of at least one stage of the first, second, and third stages.

Signal conditioning circuit with a shared oscillator

A measuring device ( ), for measuring the spectrum of a measured signal in several neighboring channels ( ) of a working channel ( ), includes a selective filter ( ) which damps the working channel ( ) more strongly than the neighboring channels ( ). Furthermore an analogue/digital converter ( ) is provided which detects the filtered measured signal from all the channels to be measured ( ) in a parallel and broadband manner and converts the above to a digital signal. An equaliser ( ) in series with the analogue/digital converter ( ), equalises the digital signal with a frequency response which is the reciprocal of the frequency response of the selective filter ( ).

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Groebenzell, Germany

Martin Oetjen