Results 231 to 240 of about 98,752 (276)

Molecular targets of cannabinoids and their derivatives in epilepsy - a review with focus on CBD. [PDF]

Acta Biochim Pol
Marciniak S, Wasyluk W, Wojtak A.
europepmc   +1 more source

Impact of antibiotic-induced gut microbiota modulation on morphine analgesia, tolerance, withdrawal, and neurophysiological changes in mice. [PDF]

Sci Rep
Jokar Z, Shahidani S, Reisi P, Alaei H, Damavandi MS, Khanahmad H.   +5 more
europepmc   +1 more source

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Probabilistic shaping-based delta sigma modulation

Optics Letters, 2023
This Letter proposes a probabilistic shaping delta-sigma modulation technique. By performing delta-sigma modulation on the probability shaping signal at the transmitting end, under the same transmit power and the same net bit rate, the delta-sigma modulation signal based on probability shaping can obtain better anti-noise capability than the delta ...
Li Zhao, Sicong Xu, Mingxu Wang, Bohan Sang, Jianyu Long, Long Zhang, Wen Zhou, Kaihui Wang, Jianjun Yu   +8 more
openaire   +2 more sources

A digital modulator with bandpass delta-sigma modulator

Proceedings of the 30th European Solid-State Circuits Conference, 2004
A digital quadrature modulator with a bandpass ??-modulator is presented that interpolates orthogonal input carriers by 16 and performs a digital quadrature modulation at carrier frequencies fs/4, ?fs/4 (fs is the sampling frequency). After quadrature modulation, the signal is converted into an analogue IF signal using a bandpass ??
Johan Sommarek, Jouko Vankka, Jaakko Ketola, Jonne Lindeberg, Kari Halonen   +4 more
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A novel delta-sigma modulated space vector modulation scheme using scalar delta-sigma modulators

IEEE 34th Annual Conference on Power Electronics Specialist, 2003. PESC '03., 2003
With advances of semiconductor switching power devices, operating frequency and power capacity of switching mode power converters are much improved. In these converters, pulse width modulation (PWM) technique is widely used, but by using this control scheme, large peak noise spectra appear with odd interval of carrier frequency.
A. Hirota, S. Nagai, M. Nakaoka
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Double sampling delta-sigma modulators

IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing, 1996
The double sampling technique can be used to achieve twice the sampling frequency in a sampled-data system without extra requirements for op-amp's settling time, dc gain, etc. In this paper, theoretical analysis of path gain mismatch on the performance of double sampling delta-sigma modulators (/spl Delta//spl Sigma/M's) is given.
null Hong-Kui Yang, E.I. El-Masry
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Delta-Sigma Modulators

2018
This chapter provides a general overview on the discrete-time ΔΣMs (DTΣΔΣMs) and continuous-time ΔΣMs (CTΔΣMs). An introduction on two different topologies of implementing high-order CTΔΣMs, single-loop and MASH, is presented. The benefits of employing a MASH topology for CT-ΔΣMs are also discussed in this chapter.
Qiyuan Liu, Alexander Edward, Carlos Briseno-Vidrios, Jose Silva-Martinez   +3 more
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Millimeter-Wave Delta-Sigma Modulators

2008 IEEE Compound Semiconductor Integrated Circuits Symposium, 2008
This paper motivates the use of continuous-time delta-sigma data converters for bandwidths above 100 MHz. Lowpass and bandpass designs implemented in SiGe BiCMOS and clocked at 20-50 Gb/s are described in the context of radio applications. Next, the viability of key building blocks is investigated in 65-nm GP CMOS including measurement results of a new
Adam Hart, Theodoros Chalvatzis, Patrice Garcia, Sorin P. Voinigescu   +3 more
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Dual-path delta-sigma modulators

48th Midwest Symposium on Circuits and Systems, 2005., 2005
In this paper, we present a dual-path delta-sigma modulator (DSM) which is especially effective when a digital correlation algorithm is used to correct the DAC errors. Unlike the dynamic element matching methods, this correction algorithm is over-sampling-ratio (OSR) independent.
null Zhenyong Zhang, J. Steensgaard, G.C. Temes   +2 more
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