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

A system for analyzing an input radio frequency (RF) signal, the system comprising:

• a device under test configured to generate the input RF signal;
• a first frequency-converting sensor comprising
• an analog receiver configured to receive the input RF signal and to convert the signal into corresponding I/Q values using a local oscillator frequency signal,
• analog to digital (A/D) converters configured to respectively convert the corresponding analog I/Q values into digital I/Q values,
• a digital processor, disposed downstream from the A/D converters, configured to process a resulting signal based on the digital I/Q values, wherein the digital processor comprises an adjustable filter configured to select a sideband of the digital I/Q values, and a calculating unit configured to calculate at least one RF signal parameter from the I/Q values of the selected sideband,
• a first signal interface configured to provide the at least one RF signal parameter, and
• a second signal interface configured to provide the digitized I/Q values for further RF signal analysis, and
• wherein the first frequency-converting sensor is configured to operate in one or more of a first operating mode consisting of a normal receiving mode involving an intermediate frequency, and a second operating mode consisting of a single receive band receiving mode involving a down-conversion to approximately zero hertz, and in the second receiving mode the adjustable filter of the digital processor is deactivated;
• and
• a display device configured to display the at least one RF signal parameter.