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Studies on the deposition of ${Si_3}{N_4}$ for the passivation of PHEMT's  

Sin, Jae-Wan (millimeter wave Advanced Technology Research Center, Dongguk University)
Park, Hyeon-Chang (millimeter wave Advanced Technology Research Center, Dongguk University)
Park, Hyeong-Mu (millimeter wave Advanced Technology Research Center, Dongguk University)
Lee, Jin-Gu (millimeter wave Advanced Technology Research Center, Dongguk University)
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Abstract
In this paper, high quality silicon nitride film is achieved using Plasma Enhanced Chemical Deposition(PECVD) system, and applied in passivating PHEMT's. Passivated PHEMT's(60 ${\mu}{\textrm}{m}$$\times$2 fingers) showed an increase of 2.7 % and 3 % in the drain saturation current and the maximum transconductance, respectively. The current gain cut-off frequency of 53 ㎓ and maximum oscillation frequency of 105 ㎓ were obtained from the fabricated PHEMT's.
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Times Cited By KSCI : 1  (Citation Analysis)
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