The Red Brick Wall of Traditional Semiconductor Electronics The ...
The Red Brick Wall of Traditional Semiconductor Electronics The ...
The Red Brick Wall of Traditional Semiconductor Electronics The ...
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SiGe:C Heterojunction Bipolar Transistor<br />
f T or f max (GHz)<br />
75<br />
70<br />
65<br />
60<br />
55<br />
50<br />
45<br />
40<br />
35<br />
30<br />
- First realization with MBE 1997 -<br />
10 -3<br />
f max<br />
V CE = 2 V<br />
Emitter Area 0.5 x 5 µm²<br />
R SBi = 2.3 kΩ<br />
f T<br />
Collector Current (A)<br />
10 -2<br />
Ring Oscillator Delay<br />
CML-type, FI/FO = 1<br />
25 HBTs, 0.9 x1.3 µm²<br />
td ± σ =<br />
(12.9 ± 0.2) ps<br />
best value: 12.6 ps<br />
Osten et al. IEDM 97<br />
Meanwhile both frequencies are above 200 GHz<br />
Si-based analog circuits for mobile communication
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