Investigation on efficacy optimization of RF-driven automotive D-lamps

Author

Schopp, Christoph ; Heuermann, Holger ; Holtrup, Stephan

Author_Institution

Dept. of High Freq. Technol., Aachen Univ. of Appl. Sci., Aachen, Germany

fYear

2014

fDate

6-9 Oct. 2014

Firstpage

1154

Lastpage

1157

Abstract

Investigations on driving high-intensity discharge xenon lamps with a 2.45GHz signal show an increase of the efficacy. These lamps are used as automotive headlights, because of their high efficacy and their high luminance. The RF-signal also enables the usage of several optimizing features such as amplitude modulation. By enabling an amplitude modulated envelope an efficacy increase of 17% is measured. The investigation of the optimization of the efficacy is presented using a switched DC lamp, compact coaxial lamp and low loss waveguide and verify the improvement. The results are further analyzed using a photo diode to measure the influence of the modulation.

Keywords

automotive components; discharge lamps; optimisation; photometry; RF-driven automotive D-lamps; compact coaxial lamp; efficacy optimization; high-intensity discharge xenon lamps; low loss waveguide; photo diode; switched DC lamp; Frequency measurement; High intensity discharge lamps; Plasma measurements; Plasmas; Sea measurements; Switches; Voltage measurement; 2.45 GHz plasma; Microplasma; RF-driven lamp; impedance transformation; plasma lamp;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2014 44th European

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMC.2014.6986645

Filename

6986645