Hello, we have to develop a switched radar application using HMC6981LS6 PA.
In order to obtain an attenuation of RF power output, is it enough to bring VGG1 & VGG2 to -3 Volt (cutoff?) ? Is this safe? Does the PA maintain stable behavior when VGG is switched from the cutoff value to the value for correct operation ( bias = 1000 mA) ? What are typical values of VGG1, VGG2 for 1000 mA bias ? Do you have S parameters of HMC6981LS6 when biased at 0 mA ?
Does the HMC6981LS6 have any limit in allowed load VSWR ?