Excitation device suitable for exciting surface waves in a discharge tube
September 1, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesDevices and methods of using HF waves to energize a column of gas enclosed in an insulating casing Plasma generator Plasma x-ray source Instantaneous and efficient surface wave excitation of a low pressure gas or gases Surface wave launchers to produce plasma columns and means for producing plasma of different shapes Surface wave launchers to produce plasma columns and means for producing plasma of different shapes Patent #: 4906898 InventorsAssigneeApplicationNo. 401416 filed on 09/01/1989US Classes:315/248, Induction-type discharge device load313/607, Having electrode exterior to envelope315/39, Discharge device load with distributed parameter-type transmission line (e.g., wave-guide, coaxial cable)315/344Electromagnetic influenced discharge deviceExaminersPrimary: LaRoche, Eugene R.Assistant: Zarabian, Amir Attorney, Agent or FirmInternational ClassH05B 041/16Foreign Application Priority Data1988-09-02 GBAbstractA discharge tube arrangement comprises an excitation device and a discharge tube made of a light-transmissive dielectric material and containing a fill. The excitation device is suitable, when energized with radio frequency (r.f.) power, for exciting surface waves in the discharge tube. The excitation device includes a launcher and a plurality of electrical components associated with the supply of r.f. power to the launcher and constituting at least one of an impedance matching network and a part at least of means to generate r.f. power. This plurality of electrical components is positioned in the launcher between its inner and outer tubes. | |
