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microwave-mixers
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Signal and noise analysis in sliced model of a fet mixer
, Article 2nd International Conference on Microwave and Millimeter Wave Technology, ICMMT 2000, 14 September 2000 through 16 September 2000 ; 2000 , Pages 5-8 ; 0780357434 (ISBN); 9780780357433 (ISBN) ; Abdipour, A ; Ghorbani, A ; Farzaneh, F ; Sharif University of Technology
Institute of Electrical and Electronics Engineers Inc
2000
Abstract
This paper presents nonlinear signal and noise analysis of a wide gate FET mixer. The study is performed using nonlinear sliced modeling. The FET is taken into account as a distributed element and divided into several smaller pieces so that in each slice a lumped model can be applied. Calculation of passive and active elements of each slice is performed using proper scaling approach. For noise analysis, appropriate noise sources are added to the distributed circuit The wide gate FETs have been suggested for high power, wideband and high gain devices such as travelling wave amplifier. The nonlinear application is suggested for a novel device named travelling wave mixer. © 2000 IEEE
An analytical approach in analysis of local oscillator near-the-carrier AM noise suppression in microwave balanced mixers
, Article IEEE Transactions on Microwave Theory and Techniques ; Volume 57, Issue 1 , 2009 , Pages 760-766 ; 00189480 (ISSN) ; Banai, A ; Farzaneh, F ; Sharif University of Technology
2009
Abstract
In this paper, a new formulation based on conversion matrix method is proposed to analyze "near-the-carrier local ocillator (LO) noise" down conversion to IF in microwave mixers. This method could be easily applied to analyze LO noise down conversion in any type of mixer. Practical results of this method have been compared with the envelope method and measurement results. It is shown that despite the conventional AM noise suppression in balanced mixers, the near-the-carrier LO noise suppression does not occur necessarily at the center frequency of hybrid in balanced mixers. AM noise suppression values are predicted precisely. © 2009 IEEE
An analytical approach in analysis of local oscillator near-the-carrier AM noise suppression in microwave balanced mixers
, Article IEEE Transactions on Microwave Theory and Techniques ; Volume 57, Issue 4 , 2009 , Pages 760-766 ; 00189480 (ISSN) ; Banai, A ; Farzaneh, F ; Sharif University of Technology
2009
Abstract
In this paper, a new formulation based on conversion matrix method is proposed to analyze near-the-carrier local ocillator (LO) noise down conversion to IF in microwave mixers. This method could be easily applied to analyze LO noise down conversion in any type of mixer. Practical results of this method have been compared with the envelope method and measurement results. It is shown that despite the conventional AM noise suppression in balanced mixers, the near-the-carrier LO noise suppression does not occur necessarily at the center frequency of hybrid in balanced mixers. AM noise suppression values are predicted precisely. © 2006 IEEE