Bias T to level shift output from oscillator
There is a solution that's even simpler than what you proposed.

Notice that the inputs of this gate are differential. And the recommended logic low voltage includes 0 V. 

That means if you bias one side of the differential input at 0 V, and apply a pure AC input (biased at 0 V) on the other side of the differential input, say 1 V peak-peak to avoid exceeding the maximum recommended high logic level (0.5 V), the gate should interpret this as a valid toggling logic input.

So you don't need a bias tee, just a dc-blocking capacitor (and a 3 dB attenuator) between your 2 V peak-peak oscillator and the HMC851 logic input.







simulate this circuit &ndash; Schematic created using CircuitLab