Design and Development of a High-Power Pulse Transmitter for Underground Environmental Perception

Karimov, A. M.; Feghhi, Rouhollah; Sabzevari, Fatemeh Modares; Winter, Robert; Fedosejevs, R.; Rambabu, Karumudi

doi:10.1109/tmtt.2022.3158322

Cited by 9 publications

(2 citation statements)

References 37 publications

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“…High voltage pulse power supply had broad applications in food non-thermal pasteurization [1], electro-chemotherapy [2], ground-penetrating radar [3], medicine [4], plasma [5], and ultra-wideband communication systems [6]. It is an effective method to develop such pulse power supply based on power semiconductor devices.…”

Section: Introductionmentioning

confidence: 99%

Switching-on Delay Jitter Caused by Lateral Distribution of Current Channel of Avalanche Transistor

Cheng,

Ning,

Tang

et al. 2024

Electronics

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The stability of the avalanche transistor’s (AT’s) switching-on process is essential for its extensive application in power semiconductors. The switching-on process was typically described in one-dimensional terms, overlooking the effects of multi-dimensional structural variations on stability. This paper investigated the influence of the lateral distribution of current channels on the switching-on delay jitter in the AT. The lateral size of the current channel affects the transit time by changing the electron path in the base region, resulting in the switching-on delay jitter of the AT. An analytical formula for the lateral size of the current channel and the switching-on delay jitter has been proposed. The two-dimensional simulation model of the AT gave the distribution of current channels. The model’s accuracy was verified by comparing experimental and simulation data. The experimental data proved that the base transit time was the main component of the switching-on delay. The results show that the switching-on delay jitter can be significantly reduced by adjusting the current channel’s lateral size. In addition, the trigger signal’s characteristics also change the current channel’s lateral distribution and then affect the stability of the switching-on delay, which provides a new perspective for the design and application of ATs.

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Section: Introductionmentioning

confidence: 99%

Switching-on Delay Jitter Caused by Lateral Distribution of Current Channel of Avalanche Transistor

Cheng,

Ning,

Tang

et al. 2024

Electronics

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“…The ultra-wideband (UWB) signal, which is used in the highintensity field and high power microwave [1][2][3][4], is a specific impulse with a tiny pulse width, a wide frequency range, characteristics. The UWB signal fluctuates quickly with the EE of mobile platforms, making it imperative to record and quantify each UWB signal impulse.…”

Section: Introductionmentioning

confidence: 99%

A low sampling rate method for the monopole UWB impulse parameter monitoring using waveform transformation

Zhang¹,

Xie²,

Li³

et al. 2023

Meas. Sci. Technol.

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In ultra-wideband (UWB) impulse parameter monitoring, amplitude and pulse width measurements are crucial for detecting and classifying unknown impulse signals. Meanwhile, mass sampling data and the complexity of the current measurement technologies are the limitations of real-time and continuous monitoring. It urges to adopt a simple method that reduces the sampling rate without sacrificing accuracy. This article suggests a novel approach for the monopole UWB by analog signal preprocessing before sampling. A peak detector and integrator are utilized to retain the impulse amplitude and the area inside the impulse for a period, which is the so-called waveform transformation. A low-speed two-channel synchronous ADC samples the output signals from the peak detector and the integrator to determine the amplitude and the area. In the signal process, we demonstrate the concept that pulse width value equals the division of area and amplitude. Due to the distorted amplitude caused by the response time of the peak detector, the relationship between the distorted amplitude, the actual amplitude, and the pulse width is analyzed and examined based on the response function. Finally, the actual amplitude and pulse width are acquired and calculated by solving two equations. In terms of impulse waveform, rectangular and Gaussian waveform factors are developed and applied in the measurement. The proof-of-concept experimental results of a 0.68 V/ 18.8 ns rectangular impulse at a 10 Msps sampling rate is 0.711 V/ 17.00 ns with 4.56 %/ 9.57% relative error, tested and verified.

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Spectrally efficient IR-UWB pulse designs based on linear combinations of Gaussian Derivatives

Taki

Abou-Rjeily

2022

Telecommun Syst

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Pulse design is critical for impulse radio communications, as it determines the transmission efficiency with respect to regulation spectral limits. In this paper, we propose the design of several novel pulse shapes relying on combinations of Gaussian derivatives with the target of improving the spectral efficiency. A general model for maximizing the efficiency of dual and triplet couplings is presented, employing the interior point global optimization algorithm. Then, the spectrum peak frequency is derived in closed form for any combination of two Gaussians with consecutive orders of derivation. The parameters controlling the time properties of the generated waveforms have been adequately adjusted to reach the best compliance with the spectral mask. Novel pulses have been investigated providing a high efficiency using simple generation mechanisms, which can be practically implemented via analog circuits. Results demonstrated the advantage of the proposed pulse shapes in terms of the bit error rate performance for 2 Gbps OOK and 1 Gbps PPM in AWGN and multipath channels.

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Design and Development of a High-Power Pulse Transmitter for Underground Environmental Perception

Cited by 9 publications

References 37 publications

Switching-on Delay Jitter Caused by Lateral Distribution of Current Channel of Avalanche Transistor

Switching-on Delay Jitter Caused by Lateral Distribution of Current Channel of Avalanche Transistor

A low sampling rate method for the monopole UWB impulse parameter monitoring using waveform transformation

Spectrally efficient IR-UWB pulse designs based on linear combinations of Gaussian Derivatives

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