I want to sweep the frequency from 26 to 36 GHz range with the sweeping time of 100 microsecond to 10 millisecond. And step size of 500MHz to 1 GHz is desirable. To achieve 26 to 36 GHz I am planning to use multiplier of x4. I don't want to use VCO individually coz it generates fluctuations in frequency. So I want to go for synthesizer with integrated VCO and PLL. ADF5355 is desirable for the same.??