A Second-Order Multibit Complex Bandpass   AD Modulator with I, Q Dynamic Matching and DWA Algorithm

San, Hao; Jingu, Yoshitaka; Wada, Hiroki; Hagiwara, Hiroyuki; Hayakawa, Akira; Kobayashi, Haruo; Matsuura, Tatsuji; Yahagi, K.; Kudoh, Junya; Nakane, Hideo; Hotta, Masao; Tsukada, T.; Mashiko, Kunihiro; Wada, Atsushi

doi:10.1093/ietele/e90-c.6.1181

Cited by 11 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It can be used inside a multi-bit ∆Σ AD modulator (Fig. 9) [26,27] where the ADC nonlinearity is noise-shaped. Also it is suitable as a sub-ADC inside a pipelined ADC (Fig.…”

Section: Discussionmentioning

confidence: 99%

Asynchronous capacitive SAR ADC based on Hopfield network

Bai

Katayama

Yao

et al. 2022

IEICE Electron. Express

View full text Add to dashboard Cite

This letter revisits a Hopfield network for an SAR ADC configuration, which enables low voltage, low power and fast operation with small circuitry. It employs an asymmetrical Hopfield network to avoid local minimum, and it uses capacitors and switches instead of very large resistors. Our N-bit SAR ADC uses N chopper-type comparators with asynchronous parallel operation, which is different from the conventional asynchronous SAR ADC employing only one comparator. It requires only the sampling clock for each input data sampling; no internal high frequency clock is required. Its AD conversion time is determined only by the comparator delays and the capacitor charge/discharge settling times; hence it is very fast and the AD conversion latency is only one or two clock cycles. Its operation is verified with SPICE simulations.

show abstract

“…It can be used inside a multi-bit ∆Σ AD modulator (Fig. 9) [26,27] where the ADC nonlinearity is noise-shaped. Also it is suitable as a sub-ADC inside a pipelined ADC (Fig.…”

Section: Discussionmentioning

confidence: 99%

Asynchronous capacitive SAR ADC based on Hopfield network

Bai

Katayama

Yao

et al. 2022

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…The author has a strong belief that ΔΣ techniques are applicable to many fields, which always lead to success. We have designed, fabricated and measured a second-order multibit switched-capacitor complex bandpass ∆ΣAD modulator which had our new architecture and algorithm [84,85]. We came up with a complex bandpass filter structure in the forward path with I, Q dynamic matching for the reduction of mismatches between I and Q paths (Fig.…”

Section: δς Adc Dac Tdc and Dc-dc Convertermentioning

confidence: 99%

How the Author's Group Came Up with Ideas in Analog/Mixed-Signal Circuit and System Area

KOBAYASHI

2024

IEICE Trans. Fundamentals

View full text Add to dashboard Cite

This article reviews the author's group research achievements in analog/mixed-signal circuit and system area with introduction of how they came up with the ideas. Analog/mixed-signal circuits and systems have to be designed as well-balanced in many aspects, and coming up ideas needs some experiences and discussions with researchers. It is also heavily dependent on researchers. Here, the author's group own experiences are presented as well as their research motivations.

show abstract

“…In order to make the speed of the robot change to 0 when it collides with an obstacle, it is necessary to reserve the braking distance. There will be many groups of speeds that are feasible during speed sampling [42]. Therefore, an evaluation function must be used to select an optimal simulation trajectory.…”

Section: Dwa Local Path Planningmentioning

confidence: 99%

Research on Slam and Path Planning Method based on Multi-sensor Fusion in Complex Factory Scene

Zhang

Zhou

Hao

et al. 2023

Preprint

View full text Add to dashboard Cite

The scene of large factories is complex, and the requirements for production safety are higher. At present, complex factories mainly use manual operation mode to carry out safety inspection, that is, manual inspection and manual recording mode to inspect factory equipment, which has the disadvantages of high labor intensity, low work efficiency and unstable inspection quality. In recent years, with the development of robot navigation related technologies, it has provided a new idea for solving autonomous navigation in large-scale and complex factory environment with variable obstacles. Therefore, we design a slam and path planning method based on multi-sensor fusion, including the establishment of complex and large-scale factory maps, dynamic obstacle avoidance and local path planning, which can achieve accurate and efficient autonomous positioning and effectively generate smooth and safe paths. The security, smoothness, flexibility and efficiency of this method are verified in various complex simulation scenarios and challenging real world. It is proved that this method can meet the performance requirements of positioning and path planning in large-scale complex industrial scenes, and has a good application prospect.

show abstract

A Second-Order Multibit Complex Bandpass AD Modulator with I, Q Dynamic Matching and DWA Algorithm

Cited by 11 publications

References 0 publications

Asynchronous capacitive SAR ADC based on Hopfield network

Asynchronous capacitive SAR ADC based on Hopfield network

How the Author's Group Came Up with Ideas in Analog/Mixed-Signal Circuit and System Area

Research on Slam and Path Planning Method based on Multi-sensor Fusion in Complex Factory Scene

Contact Info

Product

Resources

About