RF Bandpass Delta-Sigma Modulators for highly-efficient Class-S transmitters in SiGe BiCMOS technology

Scheytt, J. Christoph; Ostrovskyy, P.; Gustat, H.

doi:10.1109/icwits.2010.5611908

Cited by 4 publications

(6 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…and an EVM of 1.8%. These figures surpass state-of-the-art RF BandpassDelta-Sigma implementations as presented in [6], [7]. Future research work will be directed towards investigation of power and coding efficiency of the proposed modulator as well as a hardware demonstrator.…”

Section: Discussionmentioning

confidence: 57%

Discrete-time RF phase and pulse width modulation for power efficient switch-mode transmitter

Stanitzki¹,

Scheytt

2011

2011 Semiconductor Conference Dresden

View full text Add to dashboard Cite

Discrete-time RF pulse width modulation is mathematically analyzed. From the analysis a recipy for the generation of amplitude modulated RF signals by means of pulse-width modulation is derived. Furthermore a suitable fully digital polar phase and pulse width modulator architecture for switch-mode wireless transmitters is proposed. A system with 8 discrete pulse widths rsp. 16 phases at 2 GHz is modelled and simulated in Matlab/Simulink. It exhibits an SFDR of better than -67 dBc and EVM better than 1.8% with an 8 MSps 8-QAM test signal.

show abstract

Section: Discussionmentioning

confidence: 57%

Discrete-time RF phase and pulse width modulation for power efficient switch-mode transmitter

Stanitzki¹,

Scheytt

2011

2011 Semiconductor Conference Dresden

View full text Add to dashboard Cite

show abstract

“…Figure 7 and Table 1 compare the performance of this circuit to previously published CT BP DSMs. The plot displays SNR versus bandwidth for [4][5][6][7][8][9][10]. The dashed line indicates a line of constant SNR normalized to 1 MHz bandwidth of 72.1 dB.…”

Section: I I M E a S U R E M E N T R E S U L T Smentioning

confidence: 99%

“…by [5,8,10]. For this purpose, a W-CDMA RF downlink signal has been applied to the DSM of this paper.…”

Section: I I M E a S U R E M E N T R E S U L T Smentioning

confidence: 99%

“…One difference to [4][5][6][7][8][9][10]13] is the use of two-bit (fourlevel) internal quantization. More than single-bit (two-level) quantization introduces the risk of mismatch between current sources, leading to non-linearity of the DAC.…”

Section: I D E S I G Nmentioning

confidence: 99%

“…[4][5][6][7][8][9][10], most of them using SiGe HBT technology and a single-bit quantizer. Only one of them [4] achieves SNDR and BW suitable for AAS applications, but at a sampling rate of 40 Gb/s, making decimation filtering challenging.…”

Section: B) Circuit Design: Ct Bp Dsm Versus Zero-intermediate Frequementioning

confidence: 99%

See 2 more Smart Citations

A 2-bit, 3.1 GS/s, band-pass DSM receiver for active antenna systems

Karthaus¹,

Ahles²,

Elmaghraby

et al. 2013

Int. J. Microw. Wireless Technol.

View full text Add to dashboard Cite

This paper presents a radio frequency (RF) continuous-time band-pass delta sigma modulator (CT BP DSM) receiver realized in a 180 nm SiGe BiCMOS technology. It also provides an introduction to active antenna systems (AAS) for cellular infrastructure base stations, which is the target application for this RF integrated circuit (IC). The internal quantizer and feedback digital to analog converter (DAC) resolution of the CT BP DSM is 2 bit. Without applying DAC linearization techniques such as trimming or dynamic element matching being utilized, measured performance parameters include an SNR and SNDR in 35 MHz bandwidth of 56.7 and 53.7 dB, respectively. IIP3 and noise figure are 26.6 dBm and 10 dB, respectively. No image reception is noticeable within a measurement dynamic range of 83 dB. When driven by single-carrier and three-carrier W-CDMA signals, adjacent channel leakage ratio (ACLR) is 262.6 and 252.1 dB, respectively, making the design also suitable as a modulator for a class-S power amplifier.

show abstract

A High Voltage Swing Dual-Band Bandpass $\Delta\Sigma$ Modulator for Mobile Base-Station

Park

Jang

Ostrovskyy

et al. 2013

IEEE Microw. Wireless Compon. Lett.

View full text Add to dashboard Cite

RF Bandpass Delta-Sigma Modulators for highly-efficient Class-S transmitters in SiGe BiCMOS technology

Cited by 4 publications

References 9 publications

Discrete-time RF phase and pulse width modulation for power efficient switch-mode transmitter

Discrete-time RF phase and pulse width modulation for power efficient switch-mode transmitter

A 2-bit, 3.1 GS/s, band-pass DSM receiver for active antenna systems

A High Voltage Swing Dual-Band Bandpass $\Delta\Sigma$ Modulator for Mobile Base-Station

Contact Info

Product

Resources

About