Title :
Sideband noise reduction in transposed gain oscillators
Author :
Bunnjaweht, S. ; Underhill, M.J. ; Robertson, L.D.
Author_Institution :
Microwave Syst. Res. Group, Univ. of Surrey, Guildford, UK
Abstract :
This paper presents an analysis of the local oscillator noise reduction mechanism in transposed gain oscillators. The transposed gain oscillator is used for low phase noise signal generation. The results of the analysis show that the degree of LO noise reduction depends solely on the delay mismatch between the low frequency and local oscillator signal paths and that these delays also determine for which of the output frequencies the sideband noise is suppressed.
Keywords :
circuit noise; frequency convertors; network analysis; phase noise; radiofrequency oscillators; LO noise reduction mechanism; double frequency conversion oscillator; local oscillator; low frequency/local oscillator delay mismatch; low phase noise signal generation; sideband noise reduction; sideband noise suppression; transposed gain oscillators; Delay; Fluctuations; Frequency conversion; Local oscillators; Microwave oscillators; Modulation; Noise reduction; Phase noise; Power dividers; Resonant frequency;
Conference_Titel :
Circuits and Systems, 2003. ISCAS '03. Proceedings of the 2003 International Symposium on
Print_ISBN :
0-7803-7761-3
DOI :
10.1109/ISCAS.2003.1205663
