A Tunable CMOS IR-UWB Pulse Generator Based on Feedback Controlled Oscillator Switching

Sneler, Leon; Matić, Tomislav; Herceg, Marijan

doi:10.1109/tcsii.2020.3045212

Cited by 3 publications

(2 citation statements)

References 15 publications

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“…Selecting an improper center frequency can impose substantial limitations on the emitted power. For instance, the improper choice of the frequency band, the output PSD is limited by almost 10 dBm/MHz because of mask requirements in [32], [61].…”

Section: Frequency Spectrum Consideration and Interferencementioning

confidence: 99%

Challenges and Perspectives on Impulse Radio-Ultra-Wideband Transceivers for Neural Recording Applications

Eskandari,

Sawan

2024

IEEE Trans. Biomed. Circuits Syst.

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Brain-machine interfaces (BMI) are widely adopted in neuroscience investigations and neural prosthetics, with sensing channel counts constantly increasing. These Investigations place increasing demands for high data rates and low-power implantable devices despite high tissue losses. The Impulse radio ultra-wideband (IR-UWB), a revived wireless technology for short-range radios, has been widely used in various applications. Since the requirements and solutions are application-oriented, in this review paper we focus on neural recording implants with high-data rates and ultra-low power requirements. We examine in detail the working principle, design methodology, performance, and implementations of different architectures of IR-UWB transceivers in a quantitative manner to draw a deep comparison and extract the bottlenecks and possible solutions concerning the dedicated application. Our analysis shows that current solutions rely on enhanced or combined modulation techniques to improve link margin. An in-depth study of priorart publications that achieved Gbps data rates concludes that edge-combination architecture and non-coherent detectors are remarkable for transmitter and receiver, respectively. Although the aim to minimize power and improve data rate -defined as energy efficiency (pJ/b) -extending communication distance despite high tissue losses and limited power budget, good narrow-band interference (NBI) tolerance coexisted in the same frequency band of UWB systems, and compatibility with energy harvesting designs are among the critical challenges remained unsolved. Furthermore, we expect that the combination of artificial intelligence (AI) and the inherent advantages of UWB radios will pave the way for future improvements in BMIs.

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Section: Frequency Spectrum Consideration and Interferencementioning

confidence: 99%

Challenges and Perspectives on Impulse Radio-Ultra-Wideband Transceivers for Neural Recording Applications

Eskandari,

Sawan

2024

IEEE Trans. Biomed. Circuits Syst.

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“…Additionally, a pulse generator was demonstrated in [67], which is based on CMOS 65 nm with a 0.5 GHz bandwidth and three channels suitable for IR-UWB applications. The transient response speed of the transmitter can be enhanced by solely employing parasitic resistances and capac- itances without the need for a delay resistor or capacitor in the VCRO.…”

Section: Pulse Generators Using Cmosmentioning

confidence: 99%

Pulse Generation and Compression Techniques for Microwave Electronics and Ultrafast Systems

Rahman

2023

Electromag. Sci.

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Ultrabroadband systems and ultrafast electronics require the generation, transmission, and processing of high-quality ultrashort pulses ranging from nanoseconds (ns) to picoseconds (ps), which include well-established and emerging applications of time-domain reflectometry, arbitrary waveform generation, sampling oscilloscopes, frequency synthesis, through-wall radar imaging, indoor communication, radar surveillance, and medical radar detection. Impulse radar advancements in industrial, scientific, and medical (ISM) domains are, for example, driven by ns-scale-defined ultrawideband (UWB) technologies. Nevertheless, the generation of ultrashort ps-scale pulses is highly desired to achieve unprecedented performances in all these applications and future systems. However, due to the variety and applicability of different pulse generation and compression techniques, the selection of optimum or appropriate pulse generators and compressors is difficult for practitioners and users. To this end, this article aims to provide a comprehensive overview of ultrashort ns and ps pulse generation and compression techniques. The proposed and developed pulse generators available in the literature and on the market, which are characterized by their corresponding pros and cons, are also explored. The theoretical analysis of pulse generation using a nonlinear transmission line (NLTL) presented in the literature is briefly explained as well. Additionally, a holistic overview of these pulse generators from the perspective of applications is given to describe their utilization in practical systems. All of these techniques are well summarized and compared in terms of fundamental pulse parameters, and research gaps in specified areas are highlighted. A thorough discussion of previous research work on various topologies and techniques is presented, and potential future directions for technical advancement are examined.

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Generation of low-complexity power-efficient IR-UWB waveforms

Soliman

Shehata

Mostafa

2022

Optik

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A Tunable CMOS IR-UWB Pulse Generator Based on Feedback Controlled Oscillator Switching

Cited by 3 publications

References 15 publications

Challenges and Perspectives on Impulse Radio-Ultra-Wideband Transceivers for Neural Recording Applications

Challenges and Perspectives on Impulse Radio-Ultra-Wideband Transceivers for Neural Recording Applications

Pulse Generation and Compression Techniques for Microwave Electronics and Ultrafast Systems

Generation of low-complexity power-efficient IR-UWB waveforms

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