Feedforward interference cancellation in radio receiver front-ends

被引：50
|
作者：
Ayazian, Sahar [1 ]
Gharpurey, Ranjit [1 ]
机构：
[1] Univ Texas, Dept Elect & Comp Engn, Austin, TX 78712 USA
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2007年 / 54卷 / 10期
关键词：
feedforward cancellation; front-end; interference; low-noise amplifiers (LNAs) and mixers; narrow-band receivers;
D O I：
10.1109/TCSII.2007.902218
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：
An interference cancellation technique is described for improving the dynamic range of receivers. A feedforward approach is used to attenuate large interferers before the down-conversion mixer in a receiver. This is accomplished with no measurable impact on the in-band noise performance. Techniques to cancel interference within a narrowband and also in multiple bands are described. Simulation results and measurements from a discrete prototype system are used to validate the approach.
引用
收藏
页码：902 / 906
页数：5
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