Tuner System을 이용한 밀리미터파 탐색기용 W-band MMIC 저잡음 증폭기

국문 초록 (Abstract)

본 논문에서는 밀리미터파 Tuner system을 이용하여 밀리미터파 탐색기에 적용 가능한 W-band MMIC 저잡음 증폭기를 구현하였다. 저잡음 증폭기를 위해 구현된 MHEMT의 측정결과 692㎃/㎜의 드레인 전류 밀도 726mS/㎜의 최대전달컨덕턴스를 얻었으며 RF 특성으로 전류이득차단주파수는 195Ghz 최대공진주파수는 305Ghz의 양호한 성능을 나타내었다. 제작된 W-band 저잡음 증폭기의 측정결과 94Ghz에서 7.42dB의 우수한 S21 이득 특성을 얻었으며 잡음 지수의 측정결과 94.2Ghz에서 2.8dB의 잡음 특성을 얻었다.

다국어 초록 (Multilingual Abstract)

In this paper we developed the W-band MMIC low noise amplifier for the millimeter-wave seeker using the tuner system. The MHEMT devices for MMIC LNA exhibited DC characteristics with a drain current density of 692㎃/㎜ an extrinsic transconductance of 726mS/㎜. The current gain cutoff frequency(fT) and maximum oscillation frequency(fmax) were 195Ghz and 305Ghz respectively. The fabricated W-band low noise amplifier represented S21 gain of 7.42dB at 94 Ghz and noise figure of 2.8dB at 94.2 Ghz.

목차 (Table of Contents)

• 요약
• Abstract
• Ⅰ. 서론
• Ⅱ. Metamorphic HEMT의 특성
• Ⅲ. W-band 저잡음 증폭기의 설계
• Ⅳ. 결론
• 참고문헌
• 저자소개

참고문헌 (Reference)

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2 Dan An, "High Switching Performance 0.1-㎛ Metamorphic HEMTs for Low Conversion Loss 94 GHz Resistive Mixers" 26 (26): 707-709, 2005

3 Dan An, "High Conversion Gain V-band Quadruple Subharmonic Mixer Using Cascode Structure" 911-914, 2003

4 A. Bessemoulin, "Coplanar W-band low noise amplifier MMIC using 100-nm gate length GaAs PHEMT" 25-28, 2004

5 Mikko Karkkainen, "Coplanar 94GHz Metamorphic HEMT Low Noise Amplifiers" 29-32, 2006

6 Yves Baeyens, "Compact InP-Based HBT VCOs with a Wide Tuning Range at W- and D-Band" 48 (48): 2403-2408, 2000

7 Dan An, "A novel 94-GHz MHEMT resistive mixer using a micromachined ring coupler" IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC 16 (16): 467-469, 200608

8 N. Tanahashi, "A W-band Ultra Low Noise Amplifier MMIC Using GaAs pHEMT" 2225-2228, 2003