Title :
A method for frequency measurements of submillimeter wave using Josephson effect
Author :
Suyu, Wang ; Jiasu, Wang ; Kesong, Hu ; Yutao, Chen ; Kemin, Sheng
Author_Institution :
Dept. of Appl. Phys., Southwest Jiaotong Univ., Sichuan, China
Abstract :
A method for directly measuring the absolute frequency of a long pulse period and ultrashort pulse duration in the submillimeter band using a superconducting technique is presented. The frequency of these pulses cannot be measured by the AC Josephson effect, because their frequency spectrum is very complex. The method makes use of superconductive active and passive devices, namely, tapped delay lines, Josephson junctions for switching, and Josephson junctions for measuring frequency, and all devices constitute a whole. This method can directly accomplish real time frequency measurement of the submillimeter wave pulse signal
Keywords :
Josephson effect; delay lines; frequency measurement; submillimetre wave measurement; superconducting microwave devices; Josephson effect; Josephson junctions; THF; absolute frequency; frequency measurements; long pulse period; real-time frequency measurement; submillimeter wave measurement; superconducting technique; superconductive active devices; superconductive passive devices; switching; tapped delay lines; ultrashort pulse duration; Frequency measurement; Josephson effect; Josephson junctions; Microwave measurements; Microwave theory and techniques; Pulse measurements; Submillimeter wave devices; Submillimeter wave measurements; Superconductivity; Voltage;
Conference_Titel :
Microwave Conference Proceedings, 1997. APMC '97, 1997 Asia-Pacific
Print_ISBN :
962-442-117-X
DOI :
10.1109/APMC.1997.654590
