A Transmitter Architecture Based on Delta&amp;#x2013;Sigma Modulation and Switch-Mode Power Amplification

Nielsen, Martin Hedegaard; Larsen, Torben

doi:10.1109/tcsii.2007.899457

Cited by 83 publications

(47 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…One of the candidates for these features is the class-S family [1,2,3,4] that utilize digital modulation to use a PA in the saturation region. One group of the class-S family uses a delta-sigma modulator (DSM) for an envelope component and is called the envelope delta-sigma modulator (EDSM) transmitter [2,3,4], where an EDSM means the whole structure including a DSM for an envelope component, an up-convertor for a phase component, and a device to recombine the two components.…”

Section: Introductionmentioning

confidence: 99%

“…One group of the class-S family uses a delta-sigma modulator (DSM) for an envelope component and is called the envelope delta-sigma modulator (EDSM) transmitter [2,3,4], where an EDSM means the whole structure including a DSM for an envelope component, an up-convertor for a phase component, and a device to recombine the two components. The output signal of an EDSM is a digital-like signal of two states ('on', 'off') [4] or has only a finite number of amplitudes [2,3], which drives the PA specialized to this output signal.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Compensation technique for time alignment of envelope and phase paths in an envelope delta-sigma modulator

Lee

Cho

Jung

2015

IEICE Electron. Express

View full text Add to dashboard Cite

A compensation technique for time alignment of envelope and phase paths in an envelope delta-sigma modulator (EDSM) is proposed. In this technique, two controllable delays are intentionally added, and a combination of the two delays compensates a time misalignment caused by the inherent processing delay of a delta-sigma modulator (DSM) and the difference of propagation delays on the asymmetric envelope and phase paths. One of the two delays is a digital sample delay, which is added in the digital domain before a digital-to-analog converter (DAC). The other delay is obtained by the use of D flip flops (DFFs) followed by a DSM, which is possible because the output of a DSM is changed by a clock. The validity of the proposed technique is confirmed by simulation.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Compensation technique for time alignment of envelope and phase paths in an envelope delta-sigma modulator

Lee

Cho

Jung

2015

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…In advanced transmitting methods using different techniques, such as Envelope Elimination and Restoration (EER) or Polar transmitters [2][3][4][5], delta-sigma based transmitters [6][7][8][9][10] and Linear amplification with Nonlinear Components (LINC) [11,12], the envelope-varying signal is converted to a signal with a constant envelope. Consequently, it is possible to use highly efficient saturated linear amplifiers or switching-mode power amplifiers (SMPAs) such as classes D, E or F [13].…”

Section: Introductionmentioning

confidence: 99%

Time-Interleaved Delta-Sigma Modulator for Wideband Digital GHZ Transmitters Design and SDR Applications

Ebrahimi¹,

Helaoui²,

Ghannouchi³

2011

PIER B

View full text Add to dashboard Cite

Abstract-This paper presents a development of a wideband deltasigma modulator for fully digital GHz transmitters. The fully digital RF transmitter is developed as a promising solution for software defined radio (SDR) terminals and applications. The fully digital transmitter consists of a delta-sigma modulator, a highspeed multiplexer and a switching-mode power amplifier. The speed limitation of delta-sigma modulator is the main limitation to increase the signal bandwidth in fully digital transmitters. In this paper, the bandwidth of the fully digital transmitter is increased 8 times using parallel processing time-interleaved architecture, while maintaining the same signal quality. This architecture was implemented on FPGA and tested for different standards (WiMAX and LTE) with a signal bandwidth up to 8 MHz. The concept was assessed in terms of SNDR by using a differential logic analyzer at the output of FPGA, and the SNDR was found to be around 60 dB.

show abstract

“…In summary, either a complex modulator structure is chosen and must be driven at 4 times the RF frequency or alternatively the modulator has a simple structure, but must handle large currents and large parasitic capacitance. In both of these cases the implementation is close to impossible for RF frequencies [9].…”

Section: Introductionmentioning

confidence: 99%

“…In the same field of research, many of the reported approaches are only validated by simulation [3][4][5]. And if a prototype or a testing method is reported, they are more focused on concept proof: A downscaled frequency prototype based on standard components is used in [9]. In [6] a pattern generator with and external serializer is employed for testing purposes.…”

Section: Introductionmentioning

confidence: 99%

A Reconfigurable Platform to Drive High Frequency Class S Power Amplifiers Using Multi-gigabit Transceivers

Astarloa

Dooley

Canniff

et al. 2008

2008 International Conference on Advances in Electronics and Micro-Electronics

View full text Add to dashboard Cite

show abstract

A Transmitter Architecture Based on Delta–Sigma Modulation and Switch-Mode Power Amplification

Cited by 83 publications

References 9 publications

Compensation technique for time alignment of envelope and phase paths in an envelope delta-sigma modulator

Compensation technique for time alignment of envelope and phase paths in an envelope delta-sigma modulator

Time-Interleaved Delta-Sigma Modulator for Wideband Digital GHZ Transmitters Design and SDR Applications

A Reconfigurable Platform to Drive High Frequency Class S Power Amplifiers Using Multi-gigabit Transceivers

Contact Info

Product

Resources

About