Title :
A UWB mixer with a balanced wide band active balun using crossing centertaped inductor
Author :
Xiangrong Zhang ; Xiaole Cui ; Bo Wang ; Chung Len Lee
Author_Institution :
Shenzhen Grad. Sch., Sch. of ECE, Peking Univ., Shenzhen, China
Abstract :
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.
Keywords :
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; CMOS integrated circuits; Impedance matching; Inductors; Logic gates; Mixers; Noise measurement; Radio frequency;
Conference_Titel :
Circuits and Systems (ISCAS), 2013 IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4673-5760-9
DOI :
10.1109/ISCAS.2013.6572164
