WEMA6: Achieving superior phase synchronization stability and tracking between two microwave signal sources using 1.6 GHz frequency reference

Presentation Abstract
Microwave phase coherent signals are used for device testing in various industries and applications. A typical scheme to generate phase coherency between signals is by sharing a common 10 MHz frequency reference between two or more signal generators generating those signals. However phase stability achievable between signals in such a scheme is often not satisfactory. Two different methods are proposed to enhance the phase stability, one using a higher reference frequency of 1.6 GHz and another using a very slow closed loop output phase adjustment of signal generator. Test results are shared showing better phase stability with proposed methods.