Capacitive voltage divider with varactor
Yes as long as the net impedance ratio is not frequency dependant on other factors of inductance and load impedance sensing.  

Actual impedance of every wire, source , load and stray impedance must be known with applied voltage across Varicap as modulation will average the attenuation in a log manner. So it is not a linear attenuating capacitance voltage transformer.

Switched cap bank with CMOS may be more linear, so it depends on use.