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Variation of Characteristics of Solenoid-Type RF Chip Inductors on Inductor Size  

Yun, Eui-Jung (호서대학교 정보제어공학과)
Kim, Jae-Wook (남서울대학교 전자공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers C / v.55, no.7, 2006 , pp. 339-343 More about this Journal
Abstract
In this study, the variations of the important characteristics of solenoid-type RF chip inductors utilizing a low-loss A1203 core material on inductor dimensions were investigated systematically. Four dimensions of the chip inductors fabricated in this work were $1.0\times0.5\times0.5mm^3,\;1.5\times1.0\times0.7mm^3,\;2.1\times1.5\times1.0mm^3,\;and\;2.4\times2.0\times1.4mm^3$ and copper (Cu) wire with $40{\mu}m$ diameter was used as the coils. High frequency characteristics of the inductance, quality factor, and impedance of developed inductors as a function of inductor dimensions were measured using an RF Impedance/Material Analyzer (HP4291B with HP16193A test fixture). It was observed that the developed inductors with the number of turns of 6 have the inductance (L) of 12 to 82 nH and exhibit the self-resonant frequency (SRE) of 3.6 to 1.2 GHz. The SRF of inductors decreases with increasing the inductor size while the L increases with the inductor size. The smallest inductors of $1.0\times0.5\times0.5mm^3$ exhibited the L of 12 nH, SRF of 3.6 GHz, and the quality factor of 67 near the frequency of 1.1 GHz. The calculated data predicted the high-frequency data of the L, and Q of the developed inductors well.
Keywords
RF; Chip; Inductor; Solenoid; $Al_2O_3$;
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Times Cited By KSCI : 2  (Citation Analysis)
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