Title :
1/f phase and correlation noises in transmission media and a frequency noise reduction method in an oscillator
Author :
Takagi, Keiji ; Yamoto, Tadashi
Author_Institution :
Fac. of Eng., Kyushu Inst. of Technol., Kitakyushu, Japan
Abstract :
Phase and amplitude fluctuations are analyzed in a one-dimensional transmission line and diffusion process of the minority carriers in the base of a bipolar transistor. Both noise measurements were also carried out in a bipolar transistor and a possible method is discussed to decrease the noise. The frequency and current fluctuations and their correlation were also measured in a phase shift transistor oscillator. The spectra are of 1/f type and both are correlated. A demonstration was carried out to reduce the frequency fluctuation and a useful method to reduce the fluctuation is proposed in an oscillator
Keywords :
1/f noise; bipolar transistors; current fluctuations; electric noise measurement; interference suppression; minority carriers; oscillators; phase shifters; transmission line theory; 1/f phase noise; amplitude fluctuations; bipolar transistor; correlation noise; current fluctuations; frequency fluctuations; frequency noise reduction method; minority carriers diffusion; noise measurements; one-dimensional transmission line; oscillator; phase fluctuations; phase shift transistor oscillator; transmission media; Bipolar transistors; Current measurement; Diffusion processes; Fluctuations; Frequency measurement; Noise measurement; Oscillators; Phase measurement; Phase noise; Transmission line measurements;
Conference_Titel :
Electromagnetic Compatibility, 1999 International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
4-9980748-4-9
DOI :
10.1109/ELMAGC.1999.801295
