The design and implementation of a novel frequency synthesizer based on low phase-noise digital dividers and a direct digital synthesizer is presented. The synthesis produces two low-noise accurate tunable signals at 10 and 100 MHz. We report the measured residual phase noise and frequency stability of the synthesizer and estimate the total frequency stability, which can be expected from the synthesizer seeded with a signal near 11.2 GHz from an ultra-stable cryocooled sapphire oscillator (cryoCSO).
|Number of pages||9|
|Journal||IEEE Transactions on Microwave Theory and Techniques|
|Publication status||Published - Nov 2011|