How can I make HMC284MS8G switch in DC operation?

Hi.

I'm using HMC284MS8G chip for switch.

I want to use this HMC284MS8G chip in DC.

If I inject DC voltage to RFC port, the waveform of output is not pulse waveform.

In the datasheet, the switch can operate in DC.

But it doesn't operate in DC.

So, I want to know the DC Block Capacitor value of HMC284MS8G chip in DC switch operation

or I don't know whether I need to use DC Block capacitor in DC switch operation.

And, also I want to konw how to make this HMC284MS8G chip for DC switch operation.

Thank you.