학술논문
An effective noise-reduction scheme for microwave amplifiers
Document Type
Conference
Author
Source
IEEE International Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003. Proceedings of the 2003 Frequency control symposium Frequency Control Symposium and PDA Exhibition Jointly with the 17th European Frequency and Time Forum, 2003. Proceedings of the 2003 IEEE International. :401-404 2003
Subject
Language
ISSN
1075-6787
Abstract
An effective noise cancellation scheme, based on feedforward techniques after cancellation of the signal carrier, is presented. Experimental characterization of a proof-of-concept system applied to a 10 GHz linear amplifier yielded up to 20 dB of noise reduction for offset frequencies smaller than 100 kHz. The system described in this paper allows reducing both white and flicker noise. A thorough analysis of the canceling mechanisms supports the measurement results and allows considerations of the limits of the scheme.