(question of microwave tuning, antenna) In practice, is it possible to use pure inductive or pure capacitive loads? If possible how matching could be achieved?
Yes, it is possible to use pure inductive load and pure capacitive load for impedance matching.
There are a variety of devices used between a source of energy and a load that perform "impedance matching".
To match electrical impedances, engineers use combinations of transformers, resistors, inductors, capacitors and transmission lines.
These passive (and active) impedance-matching devices are optimized for different applications and include baluns, antenna tuners (sometimes called ATUs or roller-coasters, because of their appearance), acoustic horns, matching networks, and terminators.
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