32-QAM All-Digital RF Signal Generator Based on a Homodyne Sigma-Delta Modulation Scheme

被引：0
|
作者：
Sotiriadis, Paul Peter [1 ]
Basetas, Charis [1 ]
Temenos, Nikos [2 ]
机构：
[1] Natl Tech Univ Athens, Dept Elect & Comp Engn, Athens, Greece
[2] Univ Athens, Dept Informat & Telecommun, Athens, Greece
来源：
2017 JOINT CONFERENCE OF THE EUROPEAN FREQUENCY AND TIME FORUM AND IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (EFTF/IFC) | 2017年
关键词：
Sigma-delta; noise shaping; single-bit quantization; multiplier-less; all-digital; homodyne; synthesizer; RF; QAM;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
An all-digital sigma-delta modulator (SDM) based RF synthesizer is presented. A multiplier-less architecture for the implementation of the band-pass SDM loop filter is proposed. Furthermore, this architecture enables the adjustment of the loop filter central frequency by exploiting homodyne up-and down-conversion. The RF synthesizer is comprised of a direct digital synthesizer (DDS) and the proposed multiplier-less single-bit band-pass SDM. Due to the simplicity of the synthesizer building blocks very high generated frequencies are possible. Modualtion is easily incorporated and as a test case its performance in a 32-QAM modulation scheme is presented.
引用
收藏
页码：603 / 604
页数：2
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