| Autor: |
T.N. Ton, M. Mussetto, K.L. Tan, J. Berenz, W. Lam, Huei Wang, G.S. Dow, Larry Yujiri, Paul Shu Chung Lee, D.C.W. Lo, Barry R. Allen |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
1993 IEEE MTT-S International Microwave Symposium Digest. |
| DOI: |
10.1109/mwsym.1993.276919 |
| Popis: |
W-band MMIC (monolithic microwave integrated circuit) direct-detection receivers for passive millimeter-wave imaging applications have been demonstrated. These receivers were developed using InGaAs HEMT (high electron mobility transistor)-based W-based LNA (low-noise amplifier) and preamplified detector MMICs. The first receiver uses a 50-dB-gain, 6-dB-noise-figure amplifier and a Schottky-barrier-diode waveguide detector. The amplifier uses four W-band MMIC LNAs. The second receiver consists of two three-stage MMIC LNAs and an MMIC preamplified detector chip. Individual receivers were integrated with a millimeter-wave camera system. Field imaging acquisition runs were performed using the camera in stepping pushbroom image acquisition mode, and excellent results were obtained. > |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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