RF paths for precision research systems
Quantum and research RF work usually starts from stable frequency references and controlled microwave signals. The same rack may combine frequency synthesizers, OCXO references, IQ modulation, low-noise receive gain and low-loss interconnect so a repeatable signal path can be used across control, readout and measurement stages.
Laboratory boundary
The important boundary is not a single module name, but the relationship between phase noise, frequency stability, output level, cable loss, receive sensitivity and the measurement fixture. In low-temperature or shielded lab setups, connector repeatability, reference distribution and path loss often affect the final data as much as the RF block itself.
