I think the point is that they are improving the technique. In absolute terms the tuning range and bandwidth aren’t particularly notable compared with current

I think the point is that they are improving the technique. In absolute terms the tuning range and bandwidth aren’t particularly notable compared with current technology. For example Lime Microsystems next generation RFIC under development is targeting a range of 100 GHz and 2 GHz of bandwidth. https://limemicro.com/technology/ https://limemicro.com/technology/