摘要
为了有效地降低直接中频采样所带来的硬件开销,到目前为止,已经有很多种复杂的采样技术被提出。其中,4倍中频采样算法得到了广泛的应用。本文在此基础上提出了一种相位补偿方案以解决I、Q通道的失配。同时,对这种改进的基于4倍中频采样的数字下变频算法进行了仿真,并成功地将之应用于DAB接收机的芯片设计。
Among many digital IF complex sampling techniques that had been proposed to achieve significant hardware reduction, 4-IF sampling methods are commonly used. In this paper, a novel phase com-pensate scheme has been presented to deal with the imbalance between I and Q channel. The modified 4-IFdigital down-conversion algorithm has been simulated and adopted in the DAB receiver chip design.
出处
《半导体技术》
CAS
CSCD
北大核心
2002年第8期41-45,共5页
Semiconductor Technology
