A 10/20/30/40 MHz feed-forward FIR DAC continuous-time &amp;#x0394;&amp;#x03A3; ADC with robust blocker performance for radio receivers

Loeda, Sebastian; Harrison, J.; Pourchet, F.; Adams, Andrew

doi:10.1109/vlsic.2015.7231281

Cited by 8 publications

(2 citation statements)

References 3 publications

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“…One can see that compared to the conservative case, the aggressive NTFs have an inband noise (IBN) improvement of around 4 dB but peak out-of-band, which is a direct consequence of poles closer to the unit circle. This can theoretically be compensated for by including input feed-in paths [10], [11], but is undesired as the STF OOB suppression degrades. Considering (3), one can expect that peaking in the NTF transfers to peaking in the STF, which is verified in Fig.…”

Section: A Ntf Aggressivenessmentioning

confidence: 99%

Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators

Pietzko

Wagner

Abdelaal

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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This paper analyzes the effect of signal transfer function (STF) peaking in continuous-time (CT) Delta-Sigma-Modulators (DSMs) arising from excess loop delay (ELD) and its compensation. Starting from a generic model, the origin of different contributors to STF peaking are revised, namely noise transfer function (NTF) peaking due to aggressive noise shaping, instability from uncompensated delay as well as forward loop filter zeros in cascade-of-integrators with distributed feedforward (CIFF) modulators. The shift of forward loop filter zeros as a result of ELD compensation is shown intuitively for a 3rd order example, while system-level simulations of various 2nd, 3rd and 4th order CT single-loop modulators confirm increased STF peaking in the above stated scenarios.

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Section: A Ntf Aggressivenessmentioning

confidence: 99%

Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators

Pietzko

Wagner

Abdelaal

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

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“…In this use-case we formulate the optimization problem to minimize the energy in the stop-band, i.e., the total integrated noise. This is of interest in some of the SDFIR DAC applications such as feedback DAC in ADCs [7,70], or in frequency synthesizers and ∆Σ PLLs [130,126]. Hence the problem can be formulated as where E represents the energy in the stop-band, i.e.,…”

Section: Minimizing the Energy Metricmentioning

confidence: 99%

Studies on Selected Topics in Radio Frequency Digital-to-Analog Converters

Sadeghifar

2019

Linköping Studies in Science and Technology. Dissertations

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The network latency in fifth generation mobile technology (5G) will be around one millisecond which is much lower than in 4G technology. This significantly faster response time together with higher information capacity and ultra-reliable communication in 5G technology will pave the way for future innovations in a smart and connected society. This new 5G network should be built on a reasonable wireless infrastructure and 5G radio base stations that can be vastly deployed. That is, while the electrical specification of a radio base station in 5G should be met in order to have the network functioning, the size, weight and power consumption of the radio system should be optimized to be able to commercially deploy these radios in a huge network. Last but not least I would like to especially thank my soulmate and my love Hoda. Without all your help, your devotion and patience, I would not be able to complete this work. Therefore, I dedicate this work to you.

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Frontiers, Trends and Challenges: Towards Next‐generation ΣΔ Modulators

Rosa¹

2018

Sigma‐Delta Converters

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A 10/20/30/40 MHz feed-forward FIR DAC continuous-time ΔΣ ADC with robust blocker performance for radio receivers

Cited by 8 publications

References 3 publications

Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators

Influence of Excess Loop Delay on the STF of Continuous-Time Delta-Sigma Modulators

Studies on Selected Topics in Radio Frequency Digital-to-Analog Converters

Frontiers, Trends and Challenges: Towards Next‐generation ΣΔ Modulators

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