A Two-Stage Approach to Harmonic Rejection Mixing Using Blind Interference Cancellation

被引：16
|
作者：
Moseley, N. A. [1 ]
Klumperink, E. A. M. [1 ]
Nauta, B. [1 ]
机构：
[1] Univ Twente, CTIT, IC Design Grp, NL-7500 AE Enschede, Netherlands
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2008年 / 55卷 / 10期
关键词：
Adaptive filter; CMOS; cognitive radio; gain and phase mismatch; harmonic rejection mixing; I/Q imbalance; interference canceling; LMS; software-defined radio; switching mixers;
D O I：
10.1109/TCSII.2008.926796
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：
Current analog harmonic rejection mixers typically provide 30-40 dB of harmonic rejection, which is often not sufficient. We present a mixed analog-digital approach to harmonic rejection mixing that uses a digital interference canceler to reject the strongest interferer. Simulations indicate that, given a practical RF scenario, the digital canceler is able to improve the signal-to-interference ratio by 3045 dB.
引用
收藏
页码：966 / 970
页数：5
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