Analysis and Design of Feedforward Linearity-Improved Mixer Using Inductive Source Degeneration

Autor:	Tae-Yeoul Yun, Myoung-Gyun Kim
Rok vydání:	2014
Předmět:	Engineering Radiation Electronic mixer business.industry Amplifier Transconductance Linearity Topology (electrical circuits) Condensed Matter Physics Control theory Electronic engineering Inverter Electrical and Electronic Engineering business Frequency mixer Intermodulation
Zdroj:	IEEE Transactions on Microwave Theory and Techniques. 62:323-331
ISSN:	1557-9670 0018-9480
Popis:	This paper presents a new linearity-improvement feedforward transconductance stage using inductive source-degeneration amplifiers. The proposed technique is applied to a CMOS RF mixer based on a folded-type topology. Feedforward compensation is achieved by cancelling the third-order transconductance terms between the inverter and auxiliary amplifiers. From a new theoretical analysis of the nonlinearities of the proposed circuit, the third-order intermodulation distortion is eliminated by controlling the values of the source-degeneration inductances. The proposed mixer achieves a third-order input intercept point of -5.24 dBm, which is an improvement of 6.3 dB compared with that of the conventional structure, and has the highest figure-of-merit among other linearity improved mixers that have been previously reported.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::05549e783076b4befed4afaf92cdd6f6 https://doi.org/10.1109/tmtt.2013.2295767 Zobrazit plný text záznamu