An Efficient Plasma Lighting System with a 300W GaN Power Amplifier Using Band-Limited Pulsed RF Signal

Wonshil KANG  Hyunchul KU  

Publication
IEICE TRANSACTIONS on Electronics   Vol.E100-C   No.10   pp.934-937
Publication Date: 2017/10/01
Online ISSN: 1745-1353
Type of Manuscript: BRIEF PAPER
Category: Microwaves, Millimeter-Waves
Keyword: 
plasma lighting system,  pulsed RF,  GaN,  power amplifier,  

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Summary: 
A plasma lighting system (PLS) using a solid-state (SS) radio frequency (RF) power amplifier (PA) is one of the promising lighting systems due to its excellent light characteristics and power efficiency. To improve the efficacy and reduce the adjacent channel interference of the PLS, a method to generate a band-limited pulsed-RF signal using the limited number of multi-tone signals is proposed. A 2.49 GHz PLS with a 300W gallium-nitride (GaN) SSPA is implemented, and it is used to verify the proposed method. The PLS using the proposed method shows better performance compared with those using conventional pulsed-RF signal.