Title :
A high linearity reconfigurable down-conversion mixer for dual-band applications
Author :
Li, Tao ; Huang, Fengyi ; Wang, Yan ; Hu, Xinrong
Author_Institution :
Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China
Abstract :
This paper presents the design and analysis of a high linearity reconfigurable down-conversion mixer for IMT-Advanced (3.4~3.6 GHz) and UWB (4.2~4.8 GHz) applications. The proposed mixer is based on folded double-balanced Gilbert cell which is well-known for low voltage, simplicity and well-balanced performances. Capacitors are added parallel with the current generators to achieve the optimal IIP2 and IIP3 performance. Mixer adopts switched capacitors and control voltages to realize the dual-band operation. Designed in TSMC 0.13-μm process, the simulation results show a flat voltage conversion gain of 6.5 dB, single-sideband noise figures of 13.2 dB and 13.8 dB for IMT-Advanced and UWB, respectively. The input third-order intercept point, which represents the linearity of the mixer, is around 10 dBm for both bands. The mixer core dissipates only 4.5 mW under 1.2 V supply, the total area of the layout is 0.65 × 0.80 mm2.
Keywords :
capacitors; microwave mixers; switched capacitor networks; ultra wideband communication; IIP2 performance; IIP3 performance; IMT-Advanced applications; TSMC process; UWB applications; capacitors; current generators; dual-band applications; folded double-balanced Gilbert cell; frequency 3.4 GHz to 3.6 GHz; frequency 4.2 GHz to 4.8 GHz; gain 6.5 dB; high-linearity reconfigurable down-conversion mixer; noise figure 13.2 dB; noise figure 13.8 dB; power 4.5 mW; single-sideband noise figures; size 0.13 mum; switched capacitors; third-order intercept point; voltage 1.2 V; voltage control; Capacitors; Dual band; Gain; Linearity; Mixers; Resonant frequency; Topology;
Conference_Titel :
Signals Systems and Electronics (ISSSE), 2010 International Symposium on
Conference_Location :
Nanjing
Print_ISBN :
978-1-4244-6352-7
DOI :
10.1109/ISSSE.2010.5607129
