利用GaAs微波前馈放大器降低闪烁噪声

Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052) Pub Date : 2000-06-07 DOI:10.1109/FREQ.2000.887411

C. Broomfield, J. Everard

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引用次数: 18

摘要

本文介绍了一种微波前馈功率放大器的分析和设计，以最大限度地抑制载波闪烁噪声。对三种放大器拓扑结构进行了系统噪声系数和易于制作的分析。对影响误差信号消除的潜在问题进行了重点讨论。研制了一种前馈1 W功率放大器，在7.7 GHz载波的1-30 kHz偏置下提供20 dB闪烁噪声功率降低。

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Flicker noise reduction using GaAs microwave feedforward amplifiers

This paper describes the analysis and design of a microwave feedforward power amplifier optimised for maximum close to carrier flicker noise suppression. Three amplifier topologies are analysed with respect to system noise figure and ease of production. Potential problems affecting error signal cancellation are highlighted and discussed. A feedforward 1 W power amplifier offering 20 dB flicker noise power reduction over 1-30 kHz offset from a 7.7 GHz carrier has been produced.

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Proceedings of the 2000 IEEE/EIA International Frequency Control Symposium and Exhibition (Cat. No.00CH37052)

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