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

页码：603 / 604

页数：2

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