Naslov
The Effect of Bipolar Transistor Design on the Cutoff Frequency

Autori
Divković-Pukšec, Julijana ; Suligoj, Tomislav

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings MIPRO ´98, Vol. 1 / Biljanović, Petar ; Skala, Karolj ; Ribarić, Slobodan ; Budin, Leo - Rijeka : Hrvatska udruga za informacijsku i komunikacijsku tehnologiju, elektroniku i mikroelektroniku - MIPRO, 1998, 14-17

Skup
21st International Convention MIPRO ´98

Mjesto i datum
Opatija, Hrvatska, 18.05.1998. - 22.05.1998

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
cuttof frequency; extrinsic base; base width; time constant; Kirk effect; MEDICI

Sažetak
The influence of the concentration of extrinsic, intrinsic base and collector impurities on the npn bipolar transistor cutoff frequency (fT) are investigated in this work. The four different combination of impurity concentrations in the mentioned regions were analyzed, first by TMA MEDICI device simulator, and then by analytical calculation. It is shown that the influence of extrinsic part of a base is very small. The base width is very short, and all time constants are of the same order of magnitude. Because of small geometrical dimensions the influence of Kirk effect on the base width is taken into account. It is shown that this effect play important role in determination of cutoff frequency.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA