Analysis and Optimization of Current-Driven Passive Mixers in Narrowband Direct-Conversion Receivers

Autor:	K. Juan, A. Mirzaei, John Leete, Hooman Darabi, A. Yazdi, Xinyu Chen
Rok vydání:	2009
Předmět:	Engineering Electronic mixer business.industry Electrical engineering Harmonic mixer Noise figure Direct-conversion receiver Baseband Electronic engineering Radio frequency Electrical and Electronic Engineering business Frequency mixer Electrical impedance
Zdroj:	IEEE Journal of Solid-State Circuits. 44:2678-2688
ISSN:	1558-173X 0018-9200
DOI:	10.1109/jssc.2009.2027937
Popis:	Properties of the current-driven passive mixer are explored to maximize its performance in a zero-IF receiver. Since there is no reverse isolation between the RF and baseband sides of the mixer, the mixer reflects the baseband impedance to the RF and vice versa through simple frequency shifting. It is also shown that in an IQ down-conversion system the lack of reverse isolation causes a mutual interaction between the two quadrature mixers, which results in different high- and low-side conversion gains, and unexpected IIP2 and IIP3 values. With a thorough and accurate mathematical analysis it is shown how to design this mixer and its current buffer, and how to size components to get the best linearity, conversion gain and noise figure while alleviating the IQ cross-talk problem.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::85fc0bc6988a9a4e4bd412a7a4601436 https://doi.org/10.1109/jssc.2009.2027937 Zobrazit plný text záznamu