作为微波-光学链路的低噪声MMIC放大器

Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000] Pub Date : 2000-07-01 DOI:10.1109/ANTEM.2000.7851749

E. Zencir, E. Arvas, R. Michalak

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引用次数: 0

摘要

设计了一种低噪声MMIC分布式放大器，用于某些雷达应用中的微波-光学链路。在3.1 ~ 3.5 GHz频段，其信号增益较小，为12db。除了平坦增益要求外，还需要实现噪声系数小于5 dB的良好输入和输出回波损耗。放大器有50 Ω输入和输出阻抗。测试结果表明，在Vds=3.5 V和Vgs=0.56 V的偏置条件下，放大器在频带内的平均小信号增益为6.2 dB。输入回波损耗为−5.47 dB，输出回波损耗为−9.49 dB，平均隔离度为−29.51 dB。放大器的噪声系数在5.48 ~ 6.46 dB之间变化。获得±0.50 dB的增益纹波。

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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 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 Vds=3.5 V, and Vgs=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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Symposium on Antenna Technology and Applied Electromagnetics [ANTEM 2000]

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