Chinese Physics C > 2015, Vol. 39 > Issue(3): 037003 DOI: 10.1088/1674-1137/39/3/037003

Mode error analysis of impedance measurement using twin wires

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Abstract：
Both longitudinal and transverse coupling impedance for some critical components need to be measured for accelerator design. The twin wires method is widely used to measure longitudinal and transverse impedance on the bench. A mode error is induced when the twin wires method is used with a two-port network analyzer. Here, the mode error is analyzed theoretically and an example analysis is given. Moreover, the mode error in the measurement is a few percent when a hybrid with no less than 25 dB isolation and a splitter with no less than 20 dB magnitude error are used.

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HUANG Liang-Sheng, Yoshiro Irie, LIU Yu-Dong and WANG Sheng. Mode error analysis of impedance measurement using twin wires[J]. Chinese Physics C, 2015, 39(3): 037003. doi: 10.1088/1674-1137/39/3/037003

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Received: 2014-02-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Mode error analysis of impedance measurement using twin wires

Corresponding author:WANG Sheng,

Received Date:2014-02-01
Accepted Date:1900-01-01
Available Online:2015-03-05

Abstract:Both longitudinal and transverse coupling impedance for some critical components need to be measured for accelerator design. The twin wires method is widely used to measure longitudinal and transverse impedance on the bench. A mode error is induced when the twin wires method is used with a two-port network analyzer. Here, the mode error is analyzed theoretically and an example analysis is given. Moreover, the mode error in the measurement is a few percent when a hybrid with no less than 25 dB isolation and a splitter with no less than 20 dB magnitude error are used.