Author:
Lei Zhu,Qiang Zhou,Zhihu Wei,Zhang Chen,Jibo Wei,Jianbin Chen,Zhiyuan Zhao
Abstract
Abstract
To solve spectral aliasing of digital pulse width modulation (PWM) signal during digital up-conversion, a novel all-digital transmitter architecture using three-level quadrature differential RF-PWM is presented. By using triangle wave with 90° phase shift as the reference signal of quadrature differential PWM, the pulse coding of complex modulation signal and digital up-conversion will be realized. The feasibility of the transmitter is demonstrated by deriving the output formula of 3-level quadrature differential PWM, the design requirement is also given. Simulation and experiment results with QPSK and 16QAM signals show that the proposed scheme can significantly suppress the transmitter in-band noise, eliminate even harmonics, and effectively reduce the system operating frequency.
Subject
General Physics and Astronomy
Reference8 articles.
1. Radio Frequency Pulse Width Modulation;Raab;IEEE Transactions on Communications,1973
2. Aliasing-Free Digital Pulse-Width Modulation for Burst-Mode RF Transmitters;Hausmair;IEEE Transaction Circuits and Systems-I: Regular Papers,2013
Cited by
3 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献