MICROWAVE-OSCILLATOR PHASE NOISE-REDUCTION USING NEGATIVE-RESISTANCE COMPENSATION

被引：0
|
作者：
LAM, VMT
YIP, PCL
机构：
[1] Department of Electronic Engineering, City Polytechnic of Hong Kong, Kowloon, 83, Tat Chee Avenue
来源：
ELECTRONICS LETTERS | 1993年 / 29卷 / 04期
关键词：
NOISE; OSCILLATORS; MICROWAVE OSCILLATORS;
D O I：
10.1049/el:19930255
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：
Two microwave oscillators at a free-running frequency of approximately 800 MHz are designed. Both were designed to have the same feedback factors; the difference lies in the output loading circuit. By using the inverted common collector (ICC) [1] configuration, a stable negative resistance is generated. This negative resistance is then used to compensate for the loss in the feedback path. Hence, a zero resistance loaded oscillator is implemented. A comparative study with experimental support confirmed that the zero loaded oscillator has a 6 dB and 18 dBc improvement in the phase noise and second harmonic rejection, respectively.
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页码：379 / 381
页数：3
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