|Title:||Procedures for a traceable RF voltage measurement : Guide DKD-L 02-2|
|Authors:||Physikalisch-Technische Bundesanstalt, Braunschweig, Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887|
|Contributors:||HostingInstitution: Physikalisch-Technische Bundesanstalt (PTB), ISNI: 0000 0001 2186 1887|
|Resource Type:||Text / Technical Requirement|
|Publisher:||Physikalisch-Technische Bundesanstalt (PTB)|
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|Keywords:||RF voltage ; HF voltage ; measurement ; metrological traceability ; DKD Guide ; DKD-L 02-2|
|Abstract:||Voltage, current and resistance are the basic measurands for precision measurements in the field of direct current and low frequency. At radio frequencies (RF), however, RF power and reflection are the most relevant, while voltage and current measurement only plays a secondary role. Accordingly, extensive literature can be found regarding the RF power and reflection measurement. Very little has been published about RF voltage measurement, which is equally the case for current measurement at higher frequencies. Voltage measurements from frequencies above approx.1 MHz can be divided as follows:
Traditional measurement procedures prevail in the frequency range up to 100 MHz: the source voltage of low impedance sources is determined by high impedance voltage measurement. For frequencies above about 1 GHz, both voltmeters and sources are usually adapted to the characteristic impedance of the connecting lines, i.e. load and source impedance are identical (usually 50 Ù). Given the low source resistance, a voltage measurement without load proves difficult. As a matter of principle, procedures from both areas can be applied in the range between 100 MHz and 1 GHz. In the range above approx. 1 GHz, it is usually only the amplitude of the incident voltage wave which is measured. Taking into account the characteristic impedance of the incident power, it can be measured with high accuracy.
The present document describes the things to be considered in traceable RF voltage measurement in the frequency range above 1 MHz. In addition, there will be a brief discussion about RF current measurement.
|Citation:||Guide DKD-L 02-02 Procedures for a traceable RF voltage measurement, Edition 04/2014, Revision 0, Physikalisch-Technische Bundesanstalt, Braunschweig and Berlin. DOI: http://dx.doi.org/10.7795/550.20190509|