Title :
A model for phase noise generation in amplifiers
Author :
Tomlin, Toby-D ; Fynn, Kevin ; Cantoni, Antonio
Author_Institution :
Dept. of Electr. & Electron. Eng., Western Australia Univ., Nedlands, WA, Australia
Abstract :
In this paper a new model is presented for predicting the phase modulation (PM), and amplitude modulation (AM) noise in bipolar junction transistor (BJT) amplifiers. The new model correctly predicts the dependence of phase noise on the signal frequency (at a particular carrier offset frequency), explains the noise shaping of the phase noise about the signal frequency, and shows the functional dependence on the transistor parameters, and the circuit parameters. Experimental studies on common emitter (CE) amplifiers have been used to validate the PM noise model at carrier frequencies between 10 MHz and 100 MHz
Keywords :
HF amplifiers; VHF amplifiers; amplitude modulation; bipolar transistor circuits; circuit noise; equivalent circuits; network analysis; phase modulation; phase noise; AM noise; BJT amplifiers; PM noise; amplitude modulation noise; bipolar junction transistor amplifiers; circuit parameters; common emitter amplifiers; noise shaping; phase modulation noise; phase noise generation model; signal frequency; transistor parameters; Amplitude modulation; Circuit noise; Fluctuations; Frequency; Noise level; Noise measurement; Noise shaping; Phase modulation; Phase noise; Predictive models;
Conference_Titel :
Frequency Control Symposium and Exhibition, 2000. Proceedings of the 2000 IEEE/EIA International
Conference_Location :
Kansas City, MO
Print_ISBN :
0-7803-5838-4
DOI :
10.1109/FREQ.2000.887410
