Reduced flicker noise in microwave oscillators using feedforward amplifiers

被引：0
|
作者：
Everard, JKA [1 ]
Broomfield, C [1 ]
机构：
[1] Univ York, Dept Elect, York YO10 5DD, N Yorkshire, England
来源：
2001 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM DIGEST, VOLS 1-3 | 2001年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Transposed flicker noise removal is demonstrated in a 7.6GHz microwave oscillator for offsets greater that 10kHz. This is achieved by using a GaAs based feedforward power amplifier as the oscillation sustaining stage. 20dB noise suppression is demonstrated at 12.5kHz offset when the error correcting amplifier is switched on. The phase noise rolls-off at (1/DeltaF)(2) for offsets greater than 10kHz and is therefore set by the thermal noise to within 0-2dB of the theoretical minimum.
引用
收藏
页码：1431 / 1434
页数：4
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