cavity impedance

cavity impedance

[′kav·əd·ē im′pēd·əns]
(electronics)
The impedance of the cavity of a microwave tube which appears across the gap between the cathode and the anode.
References in periodicals archive ?
Note that the cavity impedance of no wall vibration is derived here and used into the sound absorption formulation in the next subsection which can consider both the panel and wall vibration effects and is derived using the electroacoustic analogy.