A Distortion-Free All-Digital Transmitter Based on Noise-Shaped PWM

Morales, Juan I.; Chierchie, Fernando; Mandolesi, Pablo S.; Paolini, Eduardo E.

doi:10.1109/tcsi.2022.3222939

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…The f RF used in this paper is equivalent to the radio frequency carrier frequency, and the f P W M used refers to the PWM sampling frequency used to control the PWM signal. As can be seen from Table V, the architecture proposed in this paper is slightly improved compared with references [30] and [31]. For better EVM performance, references [30] and [31] set the ratio of PWM frequency to RF frequency to 192 times and 64 times respectively.…”

Section: Comparison and Analysismentioning

confidence: 97%

“…As can be seen from Table V, the architecture proposed in this paper is slightly improved compared with references [30] and [31]. For better EVM performance, references [30] and [31] set the ratio of PWM frequency to RF frequency to 192 times and 64 times respectively. In this paper, the lowest ratio of PWM frequency to RF frequency is only 5 times.…”

Section: Comparison and Analysismentioning

confidence: 97%

“…In this paper, the lowest ratio of PWM frequency to RF frequency is only 5 times. When traditional transmitters reduce the ratio of PWM frequency to RF frequency, likes references [30], the EVM will be degraded. The jitter-enhanced PWM technology used in this paper can reduce the requirement of PWM frequency without sacrificing performance, which also means that the frequency requirement of the switching power amplifier of the transmitter can be reduced accordingly.…”

Section: Comparison and Analysismentioning

confidence: 99%

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An all-digital RF transmitter architecture based on jitter-enhanced PWM for flexible frequency applications

Long,

Chen,

et al. 2024

Preprint

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We propose a novel flexible jitter-enhanced pulse width modulation(PWM) hardware architecture, which aims to improve the modulation resolution while reducing the requirement of PWM frequency.The architecture creatively distributes the jitter effect uniformly to every radio frequency(RF) cycle corresponding to the same baseband cycle by controllable jitter, which provides a new modulation resolution growth method in the time domain. The architecture provides flexibility to adapt to different basebands and radio frequencies. By using jitter, the modulation resolution of this paper can improve 5.32 bit at most, and the EVM performance can reach -40.63db. The architecture proposed in this paper can use lower PWM frequency of 200MHz, which greatly reduces the frequency requirement of switching power amplifier in RF transmitting system. The jitter method proposed in this paper significantly improves the low modulation resolution of the traditional PWM all-digital RF transmitter and greatly changes the efficiency of all digital transmitters in the wireless communication system.

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