A lateral field non-binary split weighted capacitor array based on fractal curve for SAR ADC

Zhao, Liang; Zhang, Xiaolin; Wenxin, Ji

doi:10.1587/elex.17.20200034

Cited by 3 publications

(1 citation statement)

References 35 publications

(50 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To achieve a lower ESR and higher Q-factor of MOM capacitor, fractal capacitor has been developed and used in microwave circuits [3], [4], antennas [5], [6], transducers [7], transformers [8], [9], capacitors [10], [11], [22], couplers [12], transmission lines [13], filters [14], MEMS [15], analog-to-digital-converter [16], and among others. It uses well known space filling curve technique to increase the capacitance density by increasing the length of the periphery (number of corners) of capacitor [22].…”

Section: Introductionmentioning

confidence: 99%

A Highly Configurable and Extensible Spiral Capacitor Design for High Density or High Precision Applications

Huang

Wang

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

A configurable metal-oxide-metal (MOM) capacitor structure is highly desirable for the diversified electronics market.Based on the analytical study on different sources of capacitance in MOM capacitors, and understandings of how the lithography process impacts the final shape of the capacitors, we proposed a highly configurable and extensible spiral based capacitor. Several forms of spiral capacitors have been generated and performed lithography simulation to obtain accurate capacitance value. Compared with the single-layer interdigital MOM capacitor, The proposed spiral based capacitors has been configured to achieve a 1.23× higher capacitance density than a MOM capacitor or the smallest variation among all structures.

show abstract

Section: Introductionmentioning

confidence: 99%

A Highly Configurable and Extensible Spiral Capacitor Design for High Density or High Precision Applications

Huang

Wang

et al. 2021

2021 IEEE International Symposium on Circuits and Systems (ISCAS)

View full text Add to dashboard Cite

show abstract

A novel approach for minimising anti-aliasing effects in EEG data acquisition

Brundavani,

Vardhan

2023

Open Life Sciences

View full text Add to dashboard Cite

Electroencephalography (EEG) waves and other biological signals can be deciphered with a deeper understanding of the human body. The benefits of EEG are growing. EEG studies have expanded globally. Research on EEG covers data gathering, analysis, energy renewal, and more. EEG-gathering devices include encoding, digital transfer, head sensor placement, and separate amplifiers. The EEG detects periodic noise. Head movement, sensor lines, and hair sweat produce low-frequency noise. Low-frequency noise alters EEG signals over time. Muscle actions and electromagnetic waves create high-frequency noise (especially in the facial and neck muscles). EEG shifts are saw-toothed by high-frequency noise. High- and low-frequency noises are usually lower and higher than human EEG, respectively. Lowering signal power above and below the testing level without altering the signs of interest lowers noise. Aliasing may affect low-frequency impacts in the original data because high-frequency noise is mirrored in the data. This work designed a non-binary Complementary metal oxide semiconductor (CMOS) Consecutive guesstimate register (CGR) reconfigurable analogue-to-digital converter (ADC) integrated with the instrumental amplifier. CGR ADC model comprises the bio-signal device monitoring for the EEG signals. This study focused on acquiring the EEG signals for amplification. The model uses the AC-coupled chopper stabilisation model with 1 A low power with a noise level of 1 A. The neural amplifier uses an optimised current technique to maximise the transconductance for a good noise efficiency factor. The simulation analysis estimates a bandwidth range of 0.05–120 Hz with a power consumption level of 0.271 µW. The computed noise level is observed as 1.1 µVrms and a gain of 45 dB. The comparative analysis of the proposed ADC model achieves the minimal energy consumption value of ∼12%, which is minimal than the nonlinear and switch-end capacitor. Also, the time consumed is ∼9% less than the nonlinear and switch-end Capacitor.18 nm CMOS technology is used to implement the proposed data acquisition system for low-power and density-optimised applications.

show abstract

Aesthetic wideband dielectric resonator antenna based on fractal slot with two independently controllable resonant frequencies

2022

IEICE Electron. Express

View full text Add to dashboard Cite

An aesthetic wideband dielectric resonator antenna (DRA) based on the Minkowski fractal slot is firstly presented. The proposed DRA consists of a glass dielectric resonator (DR) with the laser engraving pattern, the ground with the Minkowski fractal slot, the fork-shaped microstrip line, and the substrate. By employing the Minkowski fractal slot, the TE 111 mode of the DR and an additional hybrid mode are excited to realize the wideband characteristics. A parametric study is performed to analyze the wideband DRA performance. The simulated results show the hybrid mode and TE 111 mode can be controlled independently. To achieve the aesthetics of the DRA, a school badge is engraved inside the glass DR. Finally, the proposed DRA is fabricated and measured. A wide impedance bandwidth of 38.4% and the peak gain of 6.5 dB for S 11 < -10 dB are achieved.

show abstract

A lateral field non-binary split weighted capacitor array based on fractal curve for SAR ADC

Cited by 3 publications

References 35 publications

A Highly Configurable and Extensible Spiral Capacitor Design for High Density or High Precision Applications

A Highly Configurable and Extensible Spiral Capacitor Design for High Density or High Precision Applications

A novel approach for minimising anti-aliasing effects in EEG data acquisition

Aesthetic wideband dielectric resonator antenna based on fractal slot with two independently controllable resonant frequencies

Contact Info

Product

Resources

About