← 返回 JSSC 论文列表JSSC 2010第2期RF & Wireless0.09μm
Dynamic Quadrant Swapping Scheme Implemented in a Post Conversion Block for I, Q Mismatch Reduction in a DQPSK Receiver Nelson Lam and Bosco H. Leung
提出动态象限交换方案，降低DQPSK接收机I/Q路径失配引起的串扰。
0.09μm CMOS, 160.16MHz IF, 36kbps数据率
动态象限交换DQPSK接收机I/Q失配串扰抑制IF数字化器
▸创新点1：动态象限交换方案选择性变换I/Q分量，通过动态调整接收符号的I/Q分量，有效减少I/Q路径失配引起的串扰，提升系统抗干扰能力。
▸创新点2：应用于IF数字化器后转换块，将动态象限交换技术集成到后转换块中，简化了系统架构，同时显著提升了图像抑制比和误码率性能。
▸创新点3：简化设计并提升性能，采用0.09μm CMOS技术实现后转换块，面积仅为0.00092 mm²，相比以往方案更简洁且性能更优。
▸创新点4：通过实验验证，在160.16 MHz和10 MHz的IF频率下，分别将误码率从10^-4提升到10^-5，图像抑制比从41 dB提升到65 dB。
Abstract
am and Bosco H. Leung
Abstract—This paper presents a new dynamic quadrant swap-
ping scheme that reduces crosstalk due to I/Q path mismatch
for DQPSK receiver. The scheme reduces crosstalk by selectively
transforming/swapping the I, Q components of the received
symbols. The scheme’s effectiveness is demonstrated by applying
it to the IF digitizer part of the receiver. In the IF digitizer the
incoming IF (first IF) signal is mixed and then converted to two
digital signals, the I and Q signals, bot