سال انتشار: ۱۳۹۰

محل انتشار: نوزدهمین کنفرانس مهندسی برق ایران

تعداد صفحات: ۴

نویسنده(ها):

Saeed Gholami – Faculty of Electrical Engineering, K.N. Toosi University of Technology
Hossein Shamsi –
Hossein Mirzaie –
Davood Mirzahosseini –

چکیده:

This paper describes the design, simulation and analysis of a high-linearity, high-gain, low-power, and inductorless 3.1-4.8 GHz ultra-wideband (UWB) downconversion mixer in a 1.8V, 0.18 μm CMOS process. In the proposed structure, using the modified derivative superposition and current–bleeding techniques, the linearity of the conventional Gilbert-cell mixer is increased about 10 dBm without losing the conversion gain. In addition, there is a noticeable decrease in the power consumption of the conventional mixer. Furthermore, the S11 and conversion gain of the mixer are hand calculated and the validity of the analytical formulas are verified by simulation results