Rohde and Schwarz Gmbh & Co. Kg

Maximilian Friesinger

Jakob Hammer

Werner Held

Gerd Bresser

Thilo Bednorz

Michael Zedler

Thomas Schouwink

A calibration unit comprises a first port which is arranged for being connected to a measurement device; a calibration module comprising at least three different calibration standards for calibrating the measurement device; and a switching module configured to connect the first port with one of the at least three different calibration standards of the calibration module. A daisy chain port is arranged for being connected to a further calibration unit, to an external power meter, or to a device-under-test, DUT. The first port is connectable to the daisy chain port. An internal power meter is arranged within a housing of the calibration unit. The first port is connectable to the internal power meter; or an internal impedance tuner. The first port is connectable to the internal impedance tuner.

Calibration unit and calibration system

The present disclosure relates to a measurement system comprising a vector analyzer (VNA), at least one remote frontend, and a cable connection connecting the at least one frontend to the VNA. The VNA comprises at least one signal source generating a RF signal and providing the RF signal via the cable connection to the at least one remote frontend. The remote frontend includes at least one measurement port for connecting a device under test (DUT) and transmitting the RF signal to the DUT, and at least one directive element. The at least one directive element couples out a transmitted portion of the RF signal and a reflected portion of the RF signal received at the at least one measurement port for measuring the transmitted portion and the reflected portion of the RF signal. The remote frontend further includes at least one dedicated calibration circuit connected between the at least one directive element and the at least one measurement port. The at least one dedicated calibration circuit provides calibration standards for calibrating the measurement system.

Calibration system and calibration method for a vector network analyzer with a remote vector analyzer frontend

The present disclosure relates to a calibration unit for a vector network analyzer (VNA). The calibration unit comprises a calibration circuit which is configured to provide the calibration standards open, short and match; and an isolation circuit. The calibration circuit comprises a first port which is arranged for being connected to a port of the VNA, a second port which is arranged for being connected to a device-under-test (DUT), and a third port which is connected to a first port of the isolation circuit; and the isolation circuit comprises a second port which is arranged for being connected to one or more further calibration units.

Calibration unit, calibration system and calibration method for a vector network analyzer

An automated calibration unit has several ports for connecting with respective ports of a test and measurement instrument to be calibrated. The automated calibration unit has a frequency conversion circuit that is non-linear and reciprocal in amplitude and phase. The automated calibration unit has at least one switching circuit with several switch states. The automated calibration unit is configured to selectively connect each one of the several ports to another one of the several ports depending on the switch state, thereby providing a through connection via the frequency conversion circuit. The automated calibration unit is configured to selectively connect each one of the several ports to at least one of several calibration standards respectively depending on the switch state. Further, a frequency conversion circuit and a method of performing calibration of a test and measurement instrument are described. Moreover, a method of absolute power calibration transfer is described.

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Munich, Germany

Maximilian Friesinger