PM and AM noise in common base amplifier

Author

Boldyreva, T.I. ; Kuleshov, V.N.

Author_Institution

Moscow Power Eng. Inst., Russia

Volume

2

fYear

1999

fDate

1999

Firstpage

1184

Abstract

Theoretical analysis of PM and AM noise introduced by common base (CB) bipolar transistor amplifier and comparison of CB and common emitter (CE) amplifiers are presented. The analysis is based on the approach and the models developed and used in the papers (1997, 1998). Power spectral densities (PSD) of PM and AM noises of CB amplifier (both wideband and 1/f type) are found as functions of a harmonic signal frequency, available power of the signal source and parameters of biasing circuits. Comparison of PM and AM noises, introduced by CB amplifier and CE amplifier with unbypassed emitter resistor is also presented and discussed. PM noise of the amplifiers is discussed taking into consideration available power of signal source that is necessary to provide the same output voltage across the same load impedance

Keywords

1/f noise; amplifiers; amplitude modulation; bipolar transistor circuits; circuit noise; harmonic analysis; network analysis; phase modulation; phase noise; AM noise; CE amplifier; PM noise; biasing circuits; common base amplifier; common base bipolar transistor amplifier; common emitter amplifiers; harmonic signal frequency; power spectral densities; signal source; unbypassed emitter resistor; Broadband amplifiers; Circuit noise; Feedback circuits; Fluctuations; Frequency; Impedance; Noise reduction; Power amplifiers; Resistors; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Frequency and Time Forum, 1999 and the IEEE International Frequency Control Symposium, 1999., Proceedings of the 1999 Joint Meeting of the European

Conference_Location

Besancon

ISSN

1075-6787

Print_ISBN

0-7803-5400-1

Type

conf

DOI

10.1109/FREQ.1999.841552

Filename

841552