مرکز منطقه ای اطلاع رسانی علوم و فناوری Journal of Information Systems and Telecommunication (JIST) 2322-1437 1 2 2013 6 20 A Wideband Low-Noise Downconversion Mixerwith Positive-Negative Feedbacks A Wideband Low-Noise Downconversion Mixerwith Positive-Negative Feedbacks 1 10 10.7508/jist.2013.02.003 en Hadi Naderian Shahid Bahonar Ahmad Hakimi Shahid Bahonar University of Kerman 2014 10 21 This paper presents a wideband low-noise mixer in CMOS 0.13-um technology that operates between 2–10.5 GHz. The mixer has a Gilbert cell configuration that employs broadband low-noise trans conductors designed using the negative-positive feedback technique used in low-noise amplifier designs. This method allows broadband input matching. The current-bleeding technique is also used so that a high conversion gain can be achieved. Simulation results show excellent noise and gain performance across the frequency span with an average double-sideband noise figure of 2.9 dB and a conversion gain of 15.5 dB. It has a third-order intermodulation intercept point of -8.7 dBm at 5 GHz. http://jist.ir/en/Article/Download/14818