New high accuracy pulse width modulation based digital-to-analogue convertor/power amplifier

Goldberg, J.; Sandler, Mark

doi:10.1049/ip-cds:19941102

Cited by 51 publications

(37 citation statements)

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“…A simplified diagram for the generation of double sided PWM (DPWM) waveform is shown in Figure 8 to illsutrate the overall processing. A good explanation of PWM can be found in [6]. The DPWM waveform has both the leading edge and trailing edge modulated by information source.…”

Section: Architectural Transformation Of Rfpwmmentioning

confidence: 99%

“…However, the quantization in duty ratio introduces unwanted quantization noise. Like in over-sampled data converters, noise shaping can be performed in PWM to preserve the SNR performance in the frequency band of interest [6]. The noise shaping filter H(z) is an FIR designed using the principles described in [12], with some modifications to accommodate the inherent non-linearity in PWM modulation.…”

Section: Duty Ratio Quantization With Noise Shapingmentioning

confidence: 99%

See 1 more Smart Citation

An FPGA Based All-Digital Transmitter with Radio Frequency Output for Software Defined Radio

Ye¹,

Grosspietsch²,

Memik

2007

2007 Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition

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Section: Architectural Transformation Of Rfpwmmentioning

confidence: 99%

Section: Duty Ratio Quantization With Noise Shapingmentioning

confidence: 99%

An FPGA Based All-Digital Transmitter with Radio Frequency Output for Software Defined Radio

Ye¹,

Grosspietsch²,

Memik

2007

2007 Design, Automation &Amp; Test in Europe Conference &Amp; Exhibition

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show abstract

“…Ordinarily the PWM signal can be classified into two forms [5]. One is PWM signal generated by natural sampling method which is called as natural sampling PWM signal (NPWM), another is PWM signal produced by uniform sampling method known as uniform sampling PWM signal (UPWM).For triangular carrier signal,it has two forms which the first is sawtooth signal known as "single sided" signal because only a single edge of the PWM waveform is modulated .Another is triangular ISSN: 2250-3021 www.iosrjen.org 932 | P a g e signal called "double sided" signal [6,7].…”

Section: Principle Of Operationmentioning

confidence: 99%

Design and Analysis of Pulse width Modulator (PWM) using Low Input Impedance Current Comparator

Choudhary¹

2012

IOSRJEN

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In this paper a new design of a simple pulse width modulator is presented. The proposed scheme has 3mW average power consumption which is less than the existing PWM methods. This circuit is also suitable for IC implementation. The simulation results are carried out under the implementation of TSMC 0.35μm CMOS process with 1.8V power supply. This method is commonly used for driving motors, heaters, or lights in varying intensities or speeds. The simulation and experimental results are shown in this paper. It is also suitable for high power applications as well as ordinary low power use, while possessing important advantages. Pulse-width (PW) modulation has been widely used to convert analog (or multibit digital) signals to binary streams.

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“…Commercial audio amplifiers utilizing PWM have been successfully designed and -even if only for special applications -marketed [7], [8]. Those amplifiers are called Class-D amplifiers.…”

Section: Introductionmentioning

confidence: 99%

Multichannel Signal Processing Using Tas5508 and Tas5121

Vipulsangram¹,

Amole²

2016

IOSRJEN

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:-Today's requirement of multichannel audio system can be full filled by using the TAS5508 eight channel digital pulse width modulator which provides both advanced performance & a high level of system integration. Multichannel audio system using PWM based open-loop digital class-d audio power amplifier pusses a fundamental problem of inherent nonlinearity of PWM process. This can be overcome by using a high performance digital power amplifier TAS5121 from Texas instruments incorporate in. The dynamic range control (DRC) techniques described to get the both compression & expansion capabilities over the three separate & definable regions of audio signal levels. Loudness compatioation is explained & the performance of demodulation filter is given to attenuate the high frequency components of the output signals that are out of the audio band. Lastly the performance analysis is given.

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New high accuracy pulse width modulation based digital-to-analogue convertor/power amplifier

Cited by 51 publications

References 0 publications

An FPGA Based All-Digital Transmitter with Radio Frequency Output for Software Defined Radio

An FPGA Based All-Digital Transmitter with Radio Frequency Output for Software Defined Radio

Design and Analysis of Pulse width Modulator (PWM) using Low Input Impedance Current Comparator

Multichannel Signal Processing Using Tas5508 and Tas5121

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