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Collector Doping Design for Improving DC and RF Performance in InGaP/GaAs HBTs before Onset of Kirk Effect
Che-ming WANG Kuang-Po HSUEH Yue-ming HSIN
Publication
IEICE TRANSACTIONS on Electronics
Vol.E88-C
No.8
pp.1790-1792 Publication Date: 2005/08/01 Online ISSN:
DOI: 10.1093/ietele/e88-c.8.1790 Print ISSN: 0916-8516 Type of Manuscript: LETTER Category: Semiconductor Materials and Devices Keyword: HBT, Kirk effect, collector doping,
Full Text: PDF(371.6KB)>>
Summary:
A thin high-doping layer was inserted in the uniform doped collector to extend the operational current before current gain and cut-off frequency roll-off. Two times higher collector current before onset of Kirk effect was obtained and the resulted John figure of merit was improved from 846 to 1008 V-GHz.
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