Referenced Items are not available for this document.
Cascode amplifiers have three configurations: bipolar junction transistor-bipolar junction transistor (BJT-BJT), field-effect transistor (FET)-BJT, and FET-FET. Although the high-frequency behaviors of these configurations are not the same in practice, in most textbooks only the BJT-BJT configuration is analyzed. High-frequency response of the BJT-BJT cascode amplifier is limited by three factors: 1) the source impedance or the output impedance of the previous stage; 2) the output impedance or the load of the amplifier; and 3) the dc bias current of the amplifier. In order to cope with these limitations, this article presents a modified cascode amplifier. In this new configuration, only a single transistor is added to the elements of each of the aforementioned cascode amplifiers. Corresponding to each configuration, a modified configuration results in greater or approximately equal gain and higher bandwidth.
Published in:
Circuits and Devices Magazine, IEEE
(Volume:20
,
Issue:
6
)
Date of Publication: Nov.-Dec. 2004
- Page(s):
- 17 - 22
- ISSN :
- 8755-3996
- INSPEC Accession Number:
- 8250184
- Digital Object Identifier :
- 10.1109/MCD.2004.1364771(410) 20
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 13 December 2004
- Issue Date :
- Nov.-Dec. 2004
- Sponsored by :
- IEEE Circuits and Systems Society
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