For voltage transfer, we’re just worried about making sure that the input impedance is high enough. Too much input capacitance at high frequencies can be a problem here.

Figure 1. Transfer Impedance test data of various EMI gaskets on the market against tin-plated surfaces. Transfer Impedance test methods have the ability to test all the variables of concern to an ...

Part 1 states the maximum power transfer theorem and goes on to illustrate its importance. Following that, some basic impedance matching circuit and methods are described.

Maximum power transfer occurs when the source and load impedance match. Also, at RF, mismatched impedance can cause reflections which, again, robs you of useful power.