Title :
Design and analysis of a high-linear UWB CMOS mixer
Author :
Gholami, Saeed ; Shamsi, Hossein ; Mirzaie, Hossein ; Mirzahosseini, Davood
Author_Institution :
Faculty of Electrical Engineering, K.N. Toosi University of Technology, Tehran, Iran
Abstract :
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) down-conversion 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
Keywords :
CMOS integrated circuits; Linearity; Mixers; Power demand; Radio frequency; Receivers; Simulation; Gilbert-cell mixer; Ultra-wideband; current bleeding; derivative superposition;
Conference_Titel :
Electrical Engineering (ICEE), 2011 19th Iranian Conference on
Conference_Location :
Tehran, Iran
Print_ISBN :
978-1-4577-0730-8
Electronic_ISBN :
978-964-463-428-4
