Title :
PM and AM noise of BJT amplifiers with quartz crystal resonator in emitter circuit
Author_Institution :
Power Eng. Inst., Moscow, Russia
Abstract :
An algorithm of bipolar junction transistor (BJT) amplifier PM and AM noise calculation, described in (1998), is applied to BJT amplifiers, having common emitter (CE) and common emitter-common base (CE-CB) circuit configurations with quartz crystal resonator (QR) inserted in emitter circuits. Power spectral densities (PSD) of PM and AM noise introduced by these amplifiers when signal frequency is close to QR resonance frequency are calculated. Calculations were made for PM and AM noises caused both by wideband noise sources and by sources of 1/f noise. A comparison of PM and AM noises of CE and CE-CB amplifiers is fulfilled and discussed
Keywords :
1/f noise; amplifiers; amplitude modulation; bipolar transistor circuits; circuit noise; circuit resonance; crystal resonators; frequency stability; network analysis; phase modulation; 1/f noise; AM noise; BJT amplifiers; PM noise; bipolar junction transistor amplifier; common emitter common base circuit; emitter circuit; power spectral densities; quartz crystal resonator; resonance frequency; wideband noise sources; Bipolar transistor circuits; Broadband amplifiers; Circuit noise; Frequency; Inductance; Low earth orbit satellites; Oscillators; Power amplifiers; Resonance; Wideband;
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
Print_ISBN :
0-7803-5400-1
DOI :
10.1109/FREQ.1999.841553
