matching stub

matching stub

[′mach·iŋ ‚stəb]
(electromagnetism)
Device placed on a radio-frequency transmission line which varies the impedance of the line; the impedance of the line can be adjusted in this manner.
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References in periodicals archive ?
In all previous formulas, losses are neglected, and the matching stub is purely reactive.
Although the system is not perfectly symmetric due to the orientations of the open matching stubs, the coupling coefficients [S.
Series, as well as shunt matching stubs, can be realized and used to reduce the size of planar passive elements.
Numbered tickets were distributed to the anxious crowd members, who then waited apprehensively as Deputy Selina Norwood drew matching stubs from a fishbowl to determine the winners.
In the new design, tuning takes place using a microprocessor-controlled stepper motor that automatically moves impedance matching stubs to the optimum position for given plasma conditions.