Apparatus for coupling electromagnetic radiation from a waveguid

Details Apparatus for coupling electromagnetic radiation from a waveguid Apparatus for coupling electromagnetic radiation from a waveguid

1993-10-28

1995-09-05

Lee, Benny T.

Electric lamp and discharge devices: systems

Combined load device or load device temperature modifying...

Distributed parameter resonator-type magnetron

315248, 333 26, H01P 5103, H01J 6504

Patent

active

054481350

ABSTRACT:
Apparatus for coupling electromagnetic energy to electrodeless lamps. A waveguide having one end connected to a source of electromagnetic radiation was closed at the second opposite end. A coupling device at the second end couples microwave energy from the waveguide to an electrodeless lamp. The coupling device includes a coaxial transmission line having a center conductor extending through one of the walls of the waveguide adjacent the second end. An alcove partition within the waveguide contacts the extending conductor and forms an alcove in the waveguide. The alcove portion provides for an impedance matching structure between the transmission line and waveguide. The electrodeless lamp which is positioned above the free end of the coaxial transmission line is excited with the coupled microwave energy.

REFERENCES:
patent: 2633493 (1953-03-01), Cohn
patent: 3478282 (1969-11-01), Smith
patent: 4144506 (1979-03-01), McCannon et al.
patent: 4359668 (1982-11-01), Ury
patent: 4988961 (1991-01-01), Schadler
patent: 5039918 (1991-08-01), Ohtake et al.
"A 750-TV-Line-Resolution Projector Using 1.5-Megapizel a-Si TFT" by Takeuchi et al, SID 91 Digest.
"Atmospheric Pressure High Power Microwave Plasma Torch: The TIA Design" by Moisan et al, Soumis a Plasma Sources Science and Technology, Jul 29, 1993.

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