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Design of a reconfigurable dual-band mixer for IMT-A and UWB systems

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4 Author(s)
Tao Li ; Nat. Mobile Commun. Res. Lab., Southeast Univ., Nanjing, China ; Fengyi Huang ; Jia Li ; Xusheng Tang

This paper presents the design and analysis of a reconfigurable dual-band 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 its low voltage, simplicity and well-balanced performances. The mixer adopts capacitive cross-coupling technique for input matching and performance improvement. Switched capacitors and resistors are added to shift the working bands. Designed in SMIC 0.13-μm process, the simulation results show flat conversion gains of 9.65 to 9.75 dB and 9.75 to 9.90 dB, single-sideband noise figures of 12.2 dB and 12.8 dB for IMT-Advanced and UWB applications, respectively. The input third-order intercept points are about 7.3 dBm for both of the frequency bands. The mixer core dissipates 4.8 mW under 1.2 V supply, and the total area of the layout is 0.76×0.65 mm2.

Published in:

Ultra-Wideband (ICUWB), 2010 IEEE International Conference on  (Volume:2 )

Date of Conference:

20-23 Sept. 2010