Title :
A 400MHz to 4GHz image-reject up convert mixer integrated a broadband quadrature signal generator
Author :
Yatao Peng ; Lijun Zhang ; Yanzhao Shen ; Jun Fu ; Yudong Wang
Author_Institution :
Inst. of Microelectron., Beijing, China
fDate :
March 30 2015-April 1 2015
Abstract :
In this paper, a broadband up convert image-reject mixer integrated the quadrature signal generator is presented. The RC polyphase network (PPN) is used to convert the single-end LO input signal to differential and quadrature signals. A pair of inductors are added to the traditional PPN to enhance the image rejection ratio (IRR). A linearity enhanced tranconductance cell is applied to the quadrature Gilbert mixer to obtain a relative high linearity. The active differential to single balun is applied as the output stage, and the output port is matched to 50Ω. The mixer is fabricated based on the SiGe HBT technology, measured results show the excellent performance in the designed frequency from 400MHz to 4GHz.
Keywords :
UHF mixers; elemental semiconductors; heterojunction bipolar transistors; microwave mixers; signal generators; IRR; PPN; RC polyphase network; broadband quadrature signal generator; broadband up convert image-reject mixer; differential signals; frequency 400 MHz to 4 GHz; image rejection ratio enhancement; linearity enhanced tranconductance cell; quadrature Gilbert mixer; quadrature signals; silicon germanium HBT technology; single balun; single-end LO input signal; Broadband communication; Frequency measurement; Impedance matching; Inductors; Linearity; Mixers; Signal generators; RC polyphase network; image-reject; linearity; output matching; quadrature mixer;
Conference_Titel :
Wireless Symposium (IWS), 2015 IEEE International
Conference_Location :
Shenzhen
DOI :
10.1109/IEEE-IWS.2015.7164583
