Meaning
Precision laboratory instrument capable of producing complex modulated radio frequency signals for testing wireless receivers. A vector signal generator uses internal baseband generators to simulate various wireless standards like lte or wi-fi. This capability allows engineers to verify receiver performance under realistic conditions.
It is a source of signals only and does not possess the ability to analyze or decode incoming radio waves.
Waveform Creation
Users upload digital data files that the instrument converts into an analog radio frequency output. The vector signal generator can add controlled amounts of noise and interference to the signal to test the limits of the receiver. This flexibility is essential for debugging firmware and hardware during the development phase.
Baseband IQ
The instrument operates by manipulating the in-phase and quadrature components of the carrier wave. This baseband iq approach allows for the creation of any modulation scheme regardless of its complexity. High resolution digital to analog converters ensure that the output signal is extremely accurate and stable.
Signal Integrity
Maintaining a low noise floor and high linearity is the primary requirement for a vector signal generator used in a certification lab. Any errors introduced by the instrument would be mistakenly attributed to the device under test. Regular calibration ensures that the output power and frequency remain within the specified tolerances.
