Miniaturized single-channel concurrent dual-band mixing architecture with one frequency-divided local oscillator  

作　　者：Yu Cuiping Gao Yuan Wu Fan Liu Yuanan 

机构地区：[1]School of Electronic Engineering,Beijing University of Posts and Telecommunications

出　　处：《The Journal of China Universities of Posts and Telecommunications》2019年第4期1-7,共7页中国邮电高校学报（英文版）

基　　金：supported by the National Natural Science Foundations of China (61821001)

摘　　要：Concurrent dual-band transceiver system is widely used in conditions where transceivers are required to work in different bands at the same time.In order to miniaturize the concurrent dual-band transceiver system and reduce the number of components in a transceiver,a novel receiver mixing structure with one frequency-divided local oscillator is proposed.Compared to traditional mixing architecture with two local oscillators,the proposed structure reduces a local oscillator and a bandpass filter.In addition,the output signal of proposed mixing architecture has a better error vector magnitude(EVM)performance.The proposed mixing architecture is described in detail;the method of local oscillator signal frequency selection and the applicable conditions of the proposed structure are derived through math formula;and the conclusions are demonstrated by experimental results.Concurrent dual-band transceiver system is widely used in conditions where transceivers are required to work in different bands at the same time.In order to miniaturize the concurrent dual-band transceiver system and reduce the number of components in a transceiver, a novel receiver mixing structure with one frequency-divided local oscillator is proposed. Compared to traditional mixing architecture with two local oscillators, the proposed structure reduces a local oscillator and a bandpass filter. In addition, the output signal of proposed mixing architecture has a better error vector magnitude(EVM) performance. The proposed mixing architecture is described in detail; the method of local oscillator signal frequency selection and the applicable conditions of the proposed structure are derived through math formula; and the conclusions are demonstrated by experimental results.

关 键 词：concurrent dual-band RECEIVERS nonlinear systems low system complexity MIXING 

分 类 号：TN859[电子电信—信息与通信工程] TN752