红外与毫米波学报
紅外與毫米波學報
홍외여호미파학보
JOURNAL OF INFRARED AND MILLIMETER WAVES
2005年
5期
321-323,327
,共4页
申小芳%姚骑均%林镇辉%史生才
申小芳%姚騎均%林鎮輝%史生纔
신소방%요기균%림진휘%사생재
频谱%亚毫米波源%外差混频%直接检波%傅里叶变换频谱仪
頻譜%亞毫米波源%外差混頻%直接檢波%傅裏葉變換頻譜儀
빈보%아호미파원%외차혼빈%직접검파%부리협변환빈보의
frequency spectrum%submillimeter sources%heterodyne mixing%direct detection%FTS
在亚毫米波频段,表征信号源的频谱特性是一项重要工作.用外差混频和直接检波(傅里叶变换频谱仪,FTS)两种方法测量一个亚毫米波连续波源(采用锁相技术且可在460～520GHz范围内调频)的频谱.500～GHz频段超导SIS隧道结在外差混频方法里用作混频器,而在直接检波方法里作为直接检波器.并对两种方法得到的结果进行了比较.
在亞毫米波頻段,錶徵信號源的頻譜特性是一項重要工作.用外差混頻和直接檢波(傅裏葉變換頻譜儀,FTS)兩種方法測量一箇亞毫米波連續波源(採用鎖相技術且可在460～520GHz範圍內調頻)的頻譜.500～GHz頻段超導SIS隧道結在外差混頻方法裏用作混頻器,而在直接檢波方法裏作為直接檢波器.併對兩種方法得到的結果進行瞭比較.
재아호미파빈단,표정신호원적빈보특성시일항중요공작.용외차혼빈화직접검파(부리협변환빈보의,FTS)량충방법측량일개아호미파련속파원(채용쇄상기술차가재460～520GHz범위내조빈)적빈보.500～GHz빈단초도SIS수도결재외차혼빈방법리용작혼빈기,이재직접검파방법리작위직접검파기.병대량충방법득도적결과진행료비교.
It is of particular interest to characterize the frequency spectrum of signal sources at submillimeter wavelengths.The heterodyne-mixing and direct-detection (Fourier transform spectrometer, FTS) methods were introduced to measure the frequency spectrum of a submillimeter CW source (phase-locked and tunable from 460-520 GHz). A 500-GHz superconductor-insulator-superconductor (SIS) tunnel junction was employed as a mixer for the former method but a direct detector for the latter. The measurement results are compared.
