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Tuning Stubs as an Aid to Coupling RF Energy to Electrodeless Discharge Lamps

Volume 26, Number 1 (Feb. 1972) Page 108-110

Schrenk, W.G.; Valente, S.E.; Smith, K.E.

Efficient coupling of rf energy to an rf excited electrodeless discharge lamp is an important procedure frequently overlooked by spectroscopists. If incorrect coupling of the rf energy (via the usual coaxial transmission line) occurs, several undesirable conditions result: (1) The energy transfer is inefficient and the coaxial transmission line will dissipate some of the energy as heat, and (2) some of the rf energy will be reflected back to the rf generator with possible damage to the generator, particularly the magnetron oscillator tube.