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http://dx.doi.org/10.6109/jkiice.2017.21.12.2241

The fabrication of a coaxial line impedance transformer with low transmission loss and wideband operation range  

Park, Ung-hee (Division of Electronics, Information & Communication Engineering, Kangwon University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.21, no.12, 2017 , pp. 2241-2248 More about this Journal
Abstract
The coaxial line impedance transformer that performs impedance conversion using the coupling of two or more coaxial lines of the same length is often used for impedance matching in the low frequency region due to many advantages. This paper measures the phase and magnitude characteristics of each coaxial line in a 4:1 coaxial line impedance transformer using two 100mm coaxial lines. This experiment shows that it is more effective to make the length of the auxiliary coaxial line shorter than the main coaxial line by about 5 mm in order to realize a low loss impedance transformer. In addition, it measures the transmission characteristics by directly connecting a 4:1 impedance transformer and a 1:4 impedance transformer. This experiment shows that it is effective to connect a 1pF capacitor between the ground and the outer conductor input point of the main coaxial line in order to increase the operating frequency range.
Keywords
Coaxial line; Impedance transformer; Wideband impedance transformer; Transmission line transformer;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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