HMC499 HMC1131 or other Analog Controlled VGA's

Hello,

I am thinking of using a medium power amplifier to increase my Tx power in a K-band system, however currently I don't have a negative voltage circuitry in my design. What would you recommend for that purpose?

My question is for Hmc499 or Hmc1131 or similar products which require negative gate voltage.

BR,

Turgut