The HA7402C from Holzworth is a real time phase noise analyzer that operates from 10 MHz to 6 GHz. It is a high performance, low cost solution that has been developed to eliminate bottlenecks on manufacturing test lines. This analyzer combines traditional analog phase noise measurement front-ends (which are spur free) with cross correlation analysis.
The analyzer requires two external LOs that enable it to achieve the lowest phase noise floors as well as blazing fast measurement speeds. Two separate LOs are required, as the engine needs non-coherent signals in order to cross correlate. The integrated frequency counters and power meters make the use of external LOs straight forward with a fully automated calibration routine.
