A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

被引：0

作者：

Buckel, T. ^{[1
,2
]}

Preyler, P. ^{[1
,2
]}

Hager, E. ^{[1
,2
]}

Mayer, T. ^{[2
]}

Tertinek, S. ^{[2
]}

Springer, A. ^{[1
]}

Weigel, R. ^{[3
]}

机构：

[1] Univ Linz, Christian Doppler Lab Digitally Assisted RF Trans, Linz, Austria

[2] Intel Corp, Linz, Austria

[3] Univ Erlangen Nurnberg, Inst Elect Engn, Erlangen, Germany

来源：

2018 14TH CONFERENCE ON PHD RESEARCH IN MICROELECTRONICS AND ELECTRONICS (PRIME 2018) | 2018年

关键词：

Digital-polar transmitter; digital-quadrature transmitter; phase modulation; quadrature modulation; RF digital-to-analog converter (RF-DAC); RF digital power amplifier (RF-DPA); RF digital phase-locked loop (RF-DPLL);

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A novel modulation scheme enabling a seamless transition between digital-intensive quadrature and polar transmitter architectures by combining inphase / quadrature (I/Q) with phase modulation is presented. By incorporating phase modulation the digital-quadrature RF digital-to-analog converter (DAC) input codewords peak to average power ratio is reduced. Therefore, the quadrature RF-DAC can be operated in a lower back-off region resulting in higher average output power and drain efficiency. Simulation results for LTE uplink transmission including the novel modulation scheme in combination with a drain efficiency model for a shared-cell, switched-capacitor RF-DAC are shown. Compared to a digital-quadrature transmitter the average output power and efficiency can be increased, approaching the digital-polar limit while showing significantly lower tuning-range requirements on the phase modulation path.

引用

页码：181 / 184

页数：4