A low-noise MMIC amplifier as a microwave-to-optics link
A low-noise MMIC distributed amplifier was designed to operate as a microwave-to-optics link in certain radar applications. It was designed to have a small signal gain of 12 dB in the frequency band of 3.1 to 3.5 GHz. In addition to the flat gain requirement, good input and output return losses with...
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Published in | Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] pp. 513 - 517 |
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Main Authors | , , |
Format | Conference Proceeding |
Language | English |
Published |
IEEE
01.07.2000
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Subjects | |
Online Access | Get full text |
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Summary: | A low-noise MMIC distributed amplifier was designed to operate as a microwave-to-optics link in certain radar applications. It was designed to have a small signal gain of 12 dB in the frequency band of 3.1 to 3.5 GHz. In addition to the flat gain requirement, good input and output return losses with a noise figure less than 5 dB were to be realized. The amplifier has 50 Ω input and output impedances. Test measurements on the first built prototype show that amplifier has an average small signal gain of 6.2 dB in the band under the bias conditions V ds =3.5 V, and V gs =0.56 V. Input return loss is −5.47 dB, output return loss is −9.49 dB and the average isolation is −29.51 dB. Noise figure of the amplifier changes between 5.48 and 6.46 dB in the band. A gain ripple of ±0.50 dB is obtained. |
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ISBN: | 096925637X 9780969256373 |
DOI: | 10.1109/ANTEM.2000.7851749 |