Title :
RC sequence asymmetric polyphase networks for RF integrated transceivers
Author :
Galal, Sherif H. ; Ragaie, Hani F. ; Tawfik, Mohamed S.
Author_Institution :
Mentor Graphics Egypt, Cairo, Egypt
fDate :
1/1/2000 12:00:00 AM
Abstract :
Resistance-capacitance (RC) sequence asymmetric polyphase networks have recently gained a renewed interest in the design of radio-frequency integrated transceivers. These networks provide an efficient way for wideband quadrature signal generation with reduced sensitivity to component mismatch. In addition, polyphase networks represent a passive implementation of complex analog filters used for image signal suppression. The general behavior of this class of networks, as well as their distinct property of discriminating between positive and negative sequences, are discussed and evaluated analytically. A design methodology is proposed and a sensitivity analysis based on Monte Carlo simulation is presented. The effect of the absolute variation of R and C values on the phase and gain matching, as well as on the image signal suppression, is also investigated for one-, two-, and three-stage networks
Keywords :
Monte Carlo methods; RC circuits; UHF integrated circuits; integrated circuit design; passive filters; sensitivity analysis; transceivers; Monte Carlo simulation; RC sequence asymmetric polyphase networks; RF integrated transceivers; complex analog filters; component mismatch; design methodology; gain matching; image signal suppression; negative sequences; passive implementation; phase matching; positive sequences; sensitivity analysis; single-stage networks; three-stage networks; two-stage networks; wideband quadrature signal generation; Energy consumption; Image sequence analysis; Passive filters; RF signals; Radio frequency; Radio transmitters; Ring oscillators; Signal generators; Transceivers; Wideband;
Journal_Title :
Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on
