Rohde and Schwarz Gmbh & Co. Kg

Rosenberger Hochfrequeńztechnik Gmbh & Co. Kg

Thomas Reichel

Toralf Bratfisch

Michael Katzer

Werner Perndl

Martin Peschke

Kurt Schmidt

Markus Leipold

Michael Wollitzer

Alexander Kunze

Frank Tatzel

Stefan Ullrich

Marcel Thraenhardt

Martin Hassler

Ralf Jünemann

Rupert Huber

Andrea Deutinger

Gerd Wuebbeler

Herbert Babinger

Rolf Judaschke

Manuela Fuhrich

Hans-Dieter Konig

Ralf Hagenbusch

Burkhard Kuefner

Harald Jaeger

Arnd Diestelhorst

Hans-Dieter König

Ralf JÜNEMANN

Manuela Führich

The invention relates to a power meter with a two-path or multipath detector comprising at least two detector elements. Each detector element generates an output voltage. In order to detect an electrical power of an alternating electrical input signal, the sum and the difference of the output voltages of the detector elements are formed separately from one another.

Power meter with two detector elements for a power measurement even of extremely low frequencies

A device for determining an estimated value for a mean power of the noise-signal sequence, which is superposed on an undisturbed periodic transmitted-signal sequence, determines a mean power of a received-signal sequence, which corresponds to the undisturbed periodic transmitted-signal sequence with the addition of the superposed noise-signal sequence. It then estimates an estimated-signal sequence for the undisturbed periodic transmitted-signal sequence from the received-signal sequence. Following this, a mean power of the estimated-signal sequence and the estimated value of the mean power of the noise-signal sequence is determined from a difference between the determined mean power of the received-signal sequence and the determined mean power of the estimated-signal sequence.

Method and a device for determining an estimated value for a noise power

A measuring device for measuring a power of a measurement signal comprises an analog-processing unit () and a calibration unit () for the implementation of a calibration procedure. The analog-processing unit () provides two detector diodes () connected in an antiparallel manner relative to a signal input () and an amplifier () for the amplification of signals which are derived from output signals of the detector diodes (). The analog-processing unit () further provides a chopper unit () which is connected at two terminals in series between the detector diodes () and the amplifier (). In this context, the calibration unit () comprises at least one current source, wherein the current sources () is connected to at least one input terminal of the amplifier ().

Power measuring device with internal calibration of diode detectors

A frequency-converting sensor is provided for generating at least a radio frequency signal parameter, such as an electrical power value. The sensor comprises an analog receiving section configured to convert an input signal into corresponding I/Q components using a local oscillator frequency, an analog to digital converting unit configured to convert the corresponding analog I/Q values into digital I/Q values, and a digital processing unit. The digital processing unit comprises an adjustable filtering unit configured to select a sideband of the digital I/Q values, and a calculating unit configured to calculate the radio frequency signal parameter from the I/Q-values of the selected sideband. A system is further provided for analyzing radio frequency input signal parameters, wherein the system incorporates a device under test, which generates the radio frequency signal, the sensor and a display device.

Frequency-converting sensor and system for providing a radio frequency signal parameter

A power-measurement device includes a power detector and a tempering device. The power detector is integrated on a monolithic chip as an integrated circuit. It converts a high-frequency test signal into a signal which displays the power of the high-frequency test signal. The power-measurement device further includes a signal input. In this context, the tempering device is arranged outside the monolithic chip on a side of the monolithic chip facing away from the integrated circuit. The signal input is connected to the power detector by a first line on a synthetic substrate. The signal input guides the high-frequency test signal to the power detector by the first line.

Thermally stabilized power sensor

A power measurement cell comprises at least one thermoelement () and at least two heating elements (). A first heating element () can be heated by a measurement signal. A temperature can be measured by means of the thermoelement (). The two heating elements () have a very small spacing. The at least one thermoelement () and the two heating elements () have a high thermal coupling.

Thermoelectric power measurement cell and corresponding measurement method

A power meter comprises at least two measurement paths and distribution device. A first measurement path contains at least one pre-amplifier and a first detector. A second measurement path contains at least one direct connection and a second detector. An additional third path alternative to or optional to the second path contains at least one attenuation element and a second or respectively third detector. The distribution device distributes a test signal to the measurement paths.

Multi-path power meter with amplifier

A method for the error correction of a vectorial network analyzer, where a primary system calibration is initially implemented using a calibration kit. Following this, a first, secondary error correction is implemented on at least two one-port networks of the vectorial network analyzer. After this first, secondary error correction of the one-port networks of the vectorial network analyzer, a second, secondary error correction is implemented, where either two one-port networks are through-connected in an ideal manner or a measurement is implemented on a reciprocal two-port network. The corrected system-error values from the first, secondary error correction are used even in this further measurement, and overall, a high-precision, calibrated multi-port network analyzer is obtained.

Method for the secondary error correction of a multi-port network analyzer

A test-signal detection system provides a probe, a first transmission line and a measuring device. The probe is connected to the measuring device by the first transmission line. The first transmission line transmits broadband test signals to the measuring device. The test-signal detection system provides at least one further transmission line. The probe is additionally connected to the measuring device at least indirectly by the at least one further transmission line. The at least one further transmission line transmits DC-voltage test signals to the measuring device.

Test signal detection system having a probe with high-precision DC-voltage measurement

A calibration system for calibrating power sensors includes a signal generator, a first signal splitter, a second signal splitter, a third signal splitter, a first measuring point, a second measuring point, a test port and a first power sensor. In this context, the signal generator is connected to the input of the first signal splitter. A first output of the first signal splitter is connected to the second signal splitter. A first output of the second signal splitter is connected to the test port. A second output of the second signal splitter is connected to the first measuring point. A second output of the first signal splitter is connected to the third signal splitter. A first output of the third signal splitter is connected to the first power sensor. A second output of the third signal splitter is connected to the second measuring point.

Power calibration system

In a microwave module with at least one semiconductor chip, which provides on its upper side a connecting-line structure formed in particular as a coplanar line, which is connected to at least one adjacent incoming and/or outgoing line structure formed on the upper side of the substrate, the chip is glued with its underside and all lateral surfaces, on which no high-frequency connecting lines lead to the chip, within a recess of a metal part with good thermal conduction.

Microwave module

A measuring device having a detector with at least one detector element and, connected downstream of the detector, a DC voltage amplifier with at least one input (and at least one output. The DC voltage amplifier provides at least one negative-feedback path, which extends from its at least one output to its at least one input, wherein at least one further detector element is disposed in the negative-feedback path.

Measuring device with negative-feedback DC voltage amplifier

In a microwave transition from a coaxial line () to a coplanar line system (), in a longitudinal hole () of an outer conductor housing (), the round inner conductor () of the coaxial line () continues in a planar inner conductor in the form of a narrow piece of foil (), of an elastically flexible insulating material and metalized on at least one side. The end of this planar inner conductor () then narrows in a transition section () to the width of a coplanar middle conductor (), with coplanar earthing areas () on both sides.

Coaxial-coplanar microwave adapter

A measuring device for measuring the envelope power and the mean-power value of a high-frequency signal. The measuring device includes a detector for detecting the high-frequency signal and for generating an analog detector signal, an analog/digital converter for generating a digital signal and an evaluation device for evaluating the digital signal. A dither supply device for the supply of a dither signal is disposed between the detector and the analog/digital converter, and a dither elimination device for eliminating the dither signal is disposed between the analog/digital converter and the evaluation device. The dither supply device supplies a different dither signal for the measurement of the envelope power than for the measurement of the mean-power value.

Measuring device and measuring method for measuring the envelope power and the mean-power value

A waveguide system comprises a differential waveguide with at least one first and one second signal conductor, which are coupled to one another within the waveguide, and a divider network with front network elements disposed at a front end of the waveguide in the signal-flow direction and with rear network elements disposed at a rear end of the waveguide in the signal-flow direction. The front network elements comprise a first parallel element, which extends in the direction from the first signal conductor to the earth conductor, and a second parallel element, which extends in the direction from the second signal conductor to the earth conductor. Alternatively, the parallel element can also be disposed between the signal conductors.

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Baldham, Germany

Thomas Reichel