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http://dx.doi.org/10.6109/jkiice.2020.24.11.1484

The 4:1(50-Ω:12.5-Ω) microstrip-slot line impedance transformer using a dielectric resonator  

Park, Ung-hee (Department of Electronic Engineering, Kangwon University)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.24, no.11, 2020 , pp. 1484-1491 More about this Journal
Abstract
Since the slot line transmits electric and magnetic signals through the slot, the size of the slot greatly affects the signal power loss. In order to have low loss, the slot line is mainly used at a high frequency of above 3GHz on a substrate having a high dielectric constant(er). This paper proposes the 4:1 impedance transformer using a slot line on TLC-30 laminate (h=20mil, er=3.0; Taconic) being a relatively low dielectric constant at a frequency of 1.85GHz. In the proposed impedance transformer, the dielectric resonator is arranged on the slot line to reduce signal loss occurring at the slot line. The proposed 4:1 microstrip-slot line impedance transformer fabricated using a (Zr,Sn)TiO4 dielectric resonator(er=38) has the transmission loss(S21) of -0.375dB and the reflection value(S11) of -27.6dB at 1.855GHz. This confirms that the slot line can be stably used even in a low dielectric constant substrate and a low frequency region by using a dielectric resonator.
Keywords
Microstrip-slot line; Slot line; Dielectric resonator; Impedance transformer;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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