本文考虑了各项隧道电流，以一个相位锁定环路模拟约瑟夫逊隧道结。
An electronic analog model to simulate the properties of Josephson tunnel junction is described in this paper.
本文介绍了一种新型频率相位追踪锁定环路（FPTLL）的设计。
A novel Frequency and Phase Tracking Locked Loop (FPTLL) is proposed in this paper.
锁相环路是一种能实现相位自动锁定的控制系统，主要用于频率合成及跟踪解调系统。
The phase- locked loop is one kind of control system which is able to achieve phase automatic lock, to compose frequency and to trace demodulation system.
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