A UWB mixer with a balanced wide band active balun using crossing centertaped inductor

Zhang Xiangrong,Cui Xiaole,Wang Bo,Lee Chung Len

Proceedings - IEEE International Symposium on Circuits and Systems（2013）

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摘要

A high gain 3-5GHz mixer merged with a very balanced wideband active balun is presented and demonstrated. It uses a Gilbert type folded structure with the active balun as the input trans-conductance stage and with a PMOS switch stage. The implemented circuit in the 0.18um CMOS technology exhibits less than 1dB amplitude imbalance in 2.06-5.2GHz, less than 1.5dB in 0.55-5.7GHz and less than 2 degree phase imbalance through 1.37GHz to 5.07GHz. The mixer exhibits a high IIP3 of -3dBm and a high isolation of LO-RF about -100dB in the wide bandwidth. It consumes only 6.2mW under a 1.8V power supply. © 2013 IEEE.

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关键词

CMOS analogue integrated circuits,MMIC mixers,UHF mixers,baluns,field effect MMIC,inductors,ultra wideband technology,CMOS technology,Gilbert-type folded structure,PMOS switch stage,UWB mixer,amplitude imbalance,balanced wide band active balun,crossing center-taped inductor,frequency 0.55 GHz to 5.57 GHz,high-gain mixer,input transconductance stage,phase imbalance,power 6.2 mW,size 0.18 mum,voltage 1.8 V,

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