The impedance of electric circuit refers to the measure of the opposition that a circuit presents to a current when a voltage is applied.

Impedance Inversion in Microwave circuits can be obtained by utilizing the Short Circuit or Open Circuit Transmission line of proper length.

That depends on the output impedance.

In electronic we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.

An input impedance is called also a load impedance or an external impedance.

An output impedance is called also a source impedance or an internal impedance.

The characteristic impedance or surge impedance belongs to uniform transmission lines.

In electronic gears we use voltage bridging, that is a relative low output impedance to a higher input impedance. Usualy the input impedance is more than ten times higher then the output impedance.
An input impedance is called also a load impedance or an external impedance.
An output impedance is called also a source impedance or an internal impedance.