130~170 GHz平坦毫米波噪声信号产生技术  

Generation of 130–170 GHz flat millimeter-wave noise signal

作　　者：孙粤辉[1] 郭亚 王云才 刘文杰 黄海碧 黄奕敏 秦玉文 Yuehui SUN;Ya GUO;Yuncai WANG;Wenjie LIU;Haibi HUANG;Yimin HUANG;Yuwen QIN(School of Information Engineering,Guangdong Provincial Key Laboratory of Photonics Information Technology,Guangdong University of Technology,Guangzhou 510006,China;School of Electronics and Information,Northwestern Polytechnical University,Xi’an 710072,China)

机构地区：[1]广东工业大学信息工程学院,广东省信息光子技术重点实验室,广州510006 [2]西北工业大学电子信息学院,西安710072

出　　处：《中国科学：信息科学》2022年第11期2155-2162,共8页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:61927811,61961136002,61731014,62150410435);“珠江人才计划”引进创新创业团队项目基金资助。

摘　　要：本文提出了一种基于三束非相干光混频产生D波段平坦毫米波噪声信号的方法.通过设置与调节三束光的中心波长与滤波光谱宽度,利用高速光电探测器同时实现光生毫米波噪声信号的频率范围与功率谱平坦度有效可控.理论分析了三束高斯型非相干光的中心波长差、滤波光谱宽度与预设频段噪声功率谱平坦度的关系.实验中,以单行载流子光电探测器(UTC-PD)为光混频器,在130~170 GHz产生了超噪比(ENR)>35 dB、平坦度低至±2.5 dB的D波段毫米波噪声信号.Three incoherent light-mixing method of the D-band flat millimeter-wave(mmWave) noise signal generation is proposed. The frequency ranges and RF spectrum flatness are effectively controlled concurrently by the center wavelengths and the 3-dB bandwidths of three light beams for the photonic mmWave noise signal generation using a high-speed photodetector. The relationship between the RF spectrum flatness, central wavelength difference, and 3-dB bandwidth of Gaussian-type incoherent light is theoretically analyzed. The experimental results show that the D-band(130–170 GHz) mmWAVE noise signal with excess noise ratio >35 dB and flatness as low as ±2.5 dB is generated with a uni-traveling-carrier photodetector as the photomixer.

关 键 词：噪声发生器 毫米波噪声 光子混频 超噪比 平坦度 

分 类 号：TN929.5[电子电信—通信与信息系统]