메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

피인용 0

검색

    초록·키워드

    In this paper, HBT's with lower phase noise and passive elements, such as resistors, capacitors and inductors, for resonant and matching networks, are designed, fabricated, tested, and carefully analysed, and then, they are integrated for the design and fabrication of functional X-band oscillators with lower phase noise using MMIC technology. Epi-wafers for HBT's with the structure of graded AlxGa1-xAs emitter and C-doped base layer of 700A thick were used to specially emphasize the improvement of fT and fmax, and the lowering of phase noise, in design aspects. The fabricated HBT's have hfe=31.45, fT=30GHz and fmax=20GHz. At the test frequencies of 12GHz, capacitances of MIM capacitors, inductances of rectangular spiral inductors, and resistances are 0.18~12.26pF, 0.2~5.22nH, and 20~1,380Ω, respectively. The emitter size of HBT's for the X-band MMIC oscillators is 3 ×10um², and final chip size is 0.9×0.9mm².

    최근 본 자료 전체보기

      UCI(KEPA) : I410-ECN-0101-2009-569-013215088