A transformer for high-power RF applications using bondwires in parallel

Author

Calvillo-Cortes, David A. ; De Vreede, Leo C N ; Van der Heijden, Mark P.

Author_Institution

Electron. Res. Lab., Delft Univ. of Technol., Delft, Netherlands

fYear

2011

fDate

10-13 Oct. 2011

Firstpage

103

Lastpage

106

Abstract

A novel bondwire-transformer for high-power RF applications is presented. The proposed structure uses several bondwires in parallel, which enables ultra-low losses and high magnetic coupling. A prototype of this proposed transformer has been implemented and evaluated by full-wave electromagnetic simulations and RF measurements. Its main electrical parameters and efficiency figures of merit are considered up to 10GHz. At 2.1GHz, the measured losses and the reactive coupling factor of the fabricated prototype are better than 0.22dB (G_MAX=0.95) and 0.71, respectively, while its resonance frequency is higher than 6.8GHz.

Keywords

microwave measurement; transformers; RF measurements; bondwire-transformer; frequency 2.1 GHz; full-wave electromagnetic simulations; high magnetic coupling; high-power RF applications; reactive coupling factor; ultralow loss; Couplings; Inductance; Loss measurement; Magnetic resonance; Prototypes; Radio frequency; Silicon; Bondwires; electromagnetic coupling; power amplifiers; power transistors; semiconductor device packaging; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2011 41st European

Conference_Location

Manchester

Print_ISBN

978-1-61284-235-6

Type

conf

Filename

6101838