A 0.18 um CMOS Programmable Interference Canceller for Cognitive Radio Front-End

被引：0
|
作者：
Yao, Chengzhang [1 ]
Li, Yongming [1 ]
Wang, Zhihua [1 ]
Zhang, Xu [2 ]
机构：
[1] Tsinghua Univ, Inst Microelect, Beijing 100084, Peoples R China
[2] Intel China Res Ctr, Beijing 100190, Peoples R China
来源：
2009 IEEE 8TH INTERNATIONAL CONFERENCE ON ASIC, VOLS 1 AND 2, PROCEEDINGS | 2009年
关键词：
Interference canceller; double-loop cancellation; cognitive radio; LC tank; DUPLEXER;
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：
A fully-integrated programmable interference canceller is presented for the cognitive radio RF front-end, which is based on a double-loop cancellation technique. For a frequency division duplexing system (FDD), this interference canceller can suppress the Tx leakage and its associated noise at the Rx band. A negative delay line and a positive delay line are required for the double cancellation paths in this architecture. In this work, the series LC tank can be used as the negative delay line and the parallel LC tank as the positive delay line. Switch and capacitor arrays are used to tune the cancellation bands. The interference canceller is designed by the 0.18 um RF CMOS process, which can achieve the additional maximum suppression of 18 dB and dissipate a total power of 28.3 mW under 1.8 V power supply.
引用
收藏
页码：391 / +
页数：2
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