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논문 기본 정보

자료유형
학술저널
저자정보
Chu-Yeh Tien (National Defense University) Ping-Yu Kuei (National Defense University) Liann-Be Chang (Chang Gung University) Chien-Pin Hsu (Formosa Epitaxy)
저널정보
대한전기학회 Journal of Electrical Engineering & Technology Journal of Electrical Engineering & Technology Vol.10 No.4
발행연도
2015.7
수록면
1,720 - 1,725 (6page)

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초록· 키워드

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The performance of the AlGaN/GaN MSM-2DEG varactor with different dielectric films deposited by the E-beam deposition is investigated in detail. The capacitance swing and the capacitance ratio of the varactor without dielectric film as well as with, SiO2, Gd2O3, and Si3N4 films, respectively, are determined by electrodes of varying areas. The maximum capacitance, the minimum capacitance and the capacitance ratios are proportional to the increasing of the electrode areas. The capacitance ratio determined by the maximum and the minimum capacitance is found to be 18.35 (with Si3N4 dielectric film) and 149.51 (without dielectric film), respectively. The transition voltages of the fabricated varactors are almost the same for a bias voltage of about ±5 V and leakage current can be lower three orders of magnitude while the varactors with dielectric films. The tunability of the capacitance ratio makes the AlGaN/GaN MSM-2DEG varactor with a dielectric film highly useful in multirange applications of a surge free preamplier.

목차

Abstract
1. Introduction
2. Experiment
3. Results and Discussion
4. Summary and Conclusions
References

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