Thank you for your comment.
The customer is considering 18GHz.
I guess HMC7911 would be the replacement.
Is this OK?
Could you let me know when HMC939A is available?
You need a PLL which drives a frequency doubler which drives an amplifier. Possible choices might be ADF4371 (PLL), HMC1105 (frequency doubler) and HMC7229 (amplifier). These are not the only choices.
This part is EAR99. The attached RFIC selection guide lists the ECCN codes for all of ADI's RF products.