400 GHz HBT Differential Amplifier Using Unbalanced Feed Networks
- Authors
- Hacker, J.; Urteaga, M.; Lin, R.; Skalare, A.; Mehdi, I.; Rieh, J. -S.; Kim, M.
- Issue Date
- 10월-2012
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Differential feed; InP HBT; terahertz amplifier
- Citation
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.22, no.10, pp.536 - 538
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
- Volume
- 22
- Number
- 10
- Start Page
- 536
- End Page
- 538
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/107385
- DOI
- 10.1109/LMWC.2012.2214767
- ISSN
- 1531-1309
- Abstract
- A terahertz differential eight-stage amplifier fabricated using state-of-the-art 125 nm double-heterojunction bipolar transistors (DHBT) is presented. The four-port unit-cell chain is designed for optimum forward differential gain with no even and odd-mode reverse gains. Unbalanced single-ended feed networks are added to preserve the amplifier gain without inducing oscillations. The proposed feed scheme is validated by a stable amplifier operation in 325-to-450 GHz range with the peak gain of 22 dB at 375 GHz.
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Collections - College of Engineering > School of Electrical Engineering > 1. Journal Articles
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