One-Branch Zero-IF Wireless Receiver Topology with Multiphase Local Oscillator  

作　　者：李金城 仇玉林 

机构地区：[1]School of Electronics and Information Engineering,Beijing Jiaotong University [2]Institute of Microelectronics,Chinese Academy of Sciences

出　　处：《Transactions of Tianjin University》2010年第2期109-113,共5页天津大学学报（英文版）

基　　金：Supported by National Natural Science Foundation of China(No.60576026)

摘　　要：This paper proposes a one-branch zero-IF receiver topology, which samples the I and Q signals of the modulated RF carrier with one signal path by means of a multiphase local oscillator. The suggested one-branch re- ceiver works without matching problem, and it is also capable of cancelling out the flicker noise and DC-offset when the local oscillator is configured to the four-phase mode. The one-branch receiver saves much area and power com- pared with the traditional two-branch ones. All of the advantages above make the one-branch receiver topology a promising architectural candidate for low-power and low-cost RF CMOS receiver designs. Keywords： RF CMOS; zero-IF; flicker noise; image rejection; low-power; IQ matchingThis paper proposes a one-branch zero-IF receiver topology, which samples the I and Q signals of the modulated RF carrier with one signal path by means of a multiphase local oscillator. The suggested one-branch receiver works without matching problem, and it is also capable of cancelling out the flicker noise and DC-offset when the local oscillator is configured to the four-phase mode. The one-branch receiver saves much area and power compared with the traditional two-branch ones. All of the advantages above make the one-branch receiver topology a promising architectural candidate for low-power and low-cost RF CMOS receiver designs.

关 键 词：RF CMOS ZERO-IF flicker noise image rejection LOW-POWER IQ matching 

分 类 号：TN851[电子电信—信息与通信工程]