Title :
A new synchronous method for attenuation measurement system
Author :
Gao Qiulai ; Liang Weijun ; Huang Hui ; Li Yong
Author_Institution :
Nat. Inst. of Metrol., Beijing
Abstract :
Audio frequency substitution with inductive voltage divider (IVD) as reference standard is the most important attenuator calibration system in which a lock-in amplifier is widely used as phase sensitive detector. In order to obtain synchronous signal for lock-in amplifier, a new simple system structures with good stability was developed in NIM (China). Its principle and experiment data are discussed in the paper.
Keywords :
attenuation measurement; calibration; intermediate-frequency amplifiers; measurement systems; stability; voltage dividers; attenuation measurement system; attenuator calibration system; audio frequency substitution; inductive voltage divider; lock-in amplifier; phase sensitive detector; stability; synchronous method; synchronous signal; Amplifiers; Attenuation measurement; Frequency conversion; Frequency modulation; Measurement standards; Microwave measurements; Phase detection; Stability; Testing; Voltage;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2008. CPEM 2008. Conference on
Conference_Location :
Broomfield, CO
Print_ISBN :
978-1-4244-2399-6
Electronic_ISBN :
978-1-4244-2400-9
DOI :
10.1109/CPEM.2008.4574753
