A gateway may contain devices such as protocol translators, impedance matching devices, rate converters, fault isolators, or signal translators as necessary to provide system interoperability.
en.wikipedia.org Early tetrapods like temnospondyls have thick stapes with poor impedance matching, so it is now thought that they were not used for hearing.
en.wikipedia.org Fixed attenuators in circuits are used to lower voltage, dissipate power, and to improve impedance matching.
en.wikipedia.org The other typical configuration is an impedance matching connection in which the source and load impedances are either equal or complex conjugates.
en.wikipedia.org Amongst the more common applications of this kind in waveguide are impedance matching networks, directional couplers, power dividers, power combiners, and diplexers.
en.wikipedia.org