| Title |
Variation of Characteristics of Solenoid-Type RF Chip Inductors on Inductor Size |
| Authors |
윤의중(Yun, Eui-Jung) ; 김재욱(Kim, Jae-Wook) |
| Keywords |
RF ; Chip ; Inductor ; Solenoid ; Al_2O_3 |
| 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 1.0×0.5×0.5mm^3, 1.5×1.0×0.7mm^3, 2.1×1.5×1.0mm^3, and 2.4×2.0×1.4mm^3 and copper (Cu) wire with 40μm 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 1.0×0.5×0.5mm^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. |