Integral impedance matching structure for electrodeless discharge lamp

摘要

An assembly includes an electrodeless discharge lamp disposed between a pair of field applicators, and an integral impedance matching structure for matching the impedance of the lamp and field applicators to the impedance of a power source. The structure includes a Tee junction, a transmission line including a first branch connecting a first output of the Tee junction to one of the field applicators. A second branch of the transmission line connects a second output of the Tee junction to the other field applicator. The difference between electrical lengths of the first and second branches are substantially shorter than a half-wavelength. The assembly is less complex and more compact than prior art which utilizes odd mode excitation via a half-wavelength balun transformer.