Title :
Predicting 1/f AM and PM noise in Si BJT amplifiers: a new computer program
Author :
Li, Jan ; Ferre-Pikal, E.S. ; Walls, F.L. ; Forbes, D. ; Talisa, S.H.
Abstract :
We show that a high-resolution software package can be adapted to calculate the amplitude modulation (AM) and phase modulation (PM) noise performance of Si Bipolar Junction Transistor (BJT) amplifiers. Our simulations predict that the PM noise induced by bias current noise can be greatly suppressed by operating at special bias conditions. Furthermore, a dc balance amplifier circuit is introduced to stabilize the base-to-collector voltage. The total sensitivity of PM noise to power supply noise using dc balance architecture can be reduced by 40 dB compared to basic amplifier architecture. This is experimentally verified
Keywords :
1/f noise; amplitude modulation; bipolar transistor circuits; circuit simulation; circuit stability; differential amplifiers; elemental semiconductors; phase modulation; semiconductor device noise; silicon; 1/f AM and PM noise; 40 dB; PM noise; Si; Si BJT amplifiers; amplifier architecture; amplitude modulation; base-to-collector voltage; computer program; dc balance amplifier circuit; dc balance architecture; noise performance; phase modulation; power supply noise; sensitivity; simulation; software package; Amplitude modulation; Circuit noise; Circuit simulation; Computational modeling; Noise level; Noise reduction; Phase modulation; Phase noise; Predictive models; Software packages;
Conference_Titel :
Frequency Control Symposium, 1998. Proceedings of the 1998 IEEE International
Conference_Location :
Pasadena, CA
Print_ISBN :
0-7803-4373-5
DOI :
10.1109/FREQ.1998.717906
