← 返回 JSSC 论文列表JSSC 2013第7期RF & Wireless40nmDACEqualizer
A 375 mW Multimode DAC-Based Transmitter With 22 GHz Signal Bandwidth and In-Ban
一款基于DAC的多模发射器，具有22 GHz信号带宽和低功耗特性。
40nm CMOS, 5 GHz采样率, +11 dBm输出功率, 375 mW功耗
多模发射器数字-to-模拟转换器宽带应用低功耗高线性度
▸数字sinc均衡和滚降补偿：该方法创新通过数字信号处理技术有效补偿了DAC的频率响应不平坦问题，实现了58 dBc以下的带内IM3失真，显著提升了宽带信号传输的线性度。
▸高速前馈流水线数字逻辑：电路创新采用前馈流水线架构，将DAC采样率提升至5 GHz，同时通过分布式解码器设计优化了时序收敛问题，为毫米波应用提供了高吞吐量支持。
▸分布式稳压器设计：系统创新通过分布式电源管理方案，在噪声敏感的SoC环境中保持了22 GHz带宽下的优异线性度，功耗仅375 mW，面积效率达1.65 mm²。
▸可编程功率回退机制：电路创新提供20 dB模拟功率回退范围，1 dB步进精度优于0.1 dB，支持动态调整发射功率以适应窄带/宽带多模应用场景。
Abstract
A 40 nm CMOS digital-to-analog converter (DAC)
based multimode transmitter (MMTX) is presented. The trans-
mitter can be operated in either narrow- or wideband applica-
tions. It has a maximum 2.2 GHz signal bandwidth and exhibits
an in-band IM3 of less than
58 dBc. The MMTX consists
of a current-steering DAC with digital sinc equalization and
rolloff compensation. By impleme nting high-speed, feed-forward
pipelined digital logic and a distributed decoder, the DAC sam-
pling rate extends to 5 GH