摘要
采用130 nm CMOS工艺,设计一种工作频率在94 GHz的高频无源混频器.该混频器为单平衡式结构,主要采用具有良好高频特性的肖特基势垒二极管与互补型传导传输线(CCS-TL)来实现.电路主要分为三部分:环形波导耦合器(Rat-race coupler),反向并联二极管对,低通滤波器.输入本振信号频率94 GHz,射频信号频率94.1 GHz,输出中频信号频率100 MHz.在电路直流偏置电压为0.5 V,本振信号PLO=0 dBm时,混频器的变频损耗为17 dB,P_(LO)=10 dBm,变频损耗为14.6 dB.经测试LO端口与RF端口的回波损耗分别为-13.4 dB,-16.7 dB,LO与RF的隔离度为26.2 dB.
A 94 GHz passive single-balanced mixer was designed in 130 nm CMOS process.The circuit based on Schottky barrier diode and complementary conducting strip transmission line（CCS TL） includes three parts：rat-race coupler,APDP and low pass filter.This mixer is designed to operate at an LO signal of 94 GHz,an RF signal of 94.1 GHz,and IF signal frequency of 100 MHz.Results of simulation showed that the proposed circuit achieved a conversion loss of 17 dB with local -oscillator power of 0 dBm and a Conversion Loss of 14.6 dB with local-oscillator power of 10 dBm.The test date showed that the return loss of LO port and RF Port is-13.4 dB,-16.7 dB,respectively.LO to RF Isolation is 26.2 dB.
出处
《天津理工大学学报》
2014年第1期11-14,46,共5页
Journal of Tianjin University of Technology
关键词
肖特基势垒二极管
互补型传导传输线
高频
无源混频器
变频损耗
schottky barrier diode
complementary conducting strip transmission line （CCS TL）
high frequency
passive mixer
conversion loss
