Abstract
Self-aligned high-frequency InP/InGaAs double heterojunction bipolar transistors (DHBT's) have been fabricated on a Si substrate for the first time. A current gain of 40 was obtained for a DHBT with an emitter dimension of 1.6 × 19 μm2. The S parameters were measured for various bias points. In the case of Ic= 15 mA, fTwas 59 GHz at VCE= 1.8 V, and fmax was 69 GHz at VCE = 2.3 V. Due to the InP collector, breakdown voltage was so high that a high VCEof 3.8 V was applied for Ic = 7.5 mA in the S-parameter measurements to give an fTof 39 GHz and an fmax of 52 GHz.
Original language | English |
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Pages (from-to) | 357-359 |
Number of pages | 3 |
Journal | IEEE Electron Device Letters |
Volume | 14 |
Issue number | 7 |
DOIs | |
Publication status | Published - 1993 Jul |
Externally published | Yes |
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering