Large amplitude picosecond step generation with FETs

Ouslimani, A.; Vernet, Guy; Hafdallah, H.; Adde, R.

doi:10.1049/el:19901003

Cited by 22 publications

(8 citation statements)

References 3 publications

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“…UWB system is defined by Federal Communications Commission (FCC) and it is characterized by bandwidth superior to 1.5 GHz and Power Spectral Density (PSD) of -41.3 dBm/MHz [9]. Due to these strict constraints different architectures of UWB transmitter and receiver have been proposed in recent publications [1][2][3][4][5][6][7][8][10][11][12][13][14]. The band width of UWB communication is depicted in Fig.…”

Section: Introductionmentioning

confidence: 99%

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New design of 3.2–4.8 GHz generator for multi-bands architecture of UWB communication

Issa

Kachouri

Samet

2011

Analog Integr Circ Sig Process

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In this paper a new design of Ultra-Wide Band (UWB) generator is presented. This circuit is the most important block in multi-bands transmitter architecture of UWB communication system. The proposed UWB generator is composed of multi-bands voltage controlled oscillator (VCO), mixer and rectangular pulse generator which consist of ring oscillator, time delay and AND gate function. The UWB generator is based on multiplying the rectangular pulse envelope to a continuous sinusoidal wave in order to generate the UWB signal. This UWB generator circuit produces an output signal which is characterized by the bandwidth of 1600 MHz divided into three sub-bands of 528 MHz, centered at frequencies of 3.432, 3.96, 4.488 GHz and the limited Power Spectral Density (PSD) is -41.44 dBm/MHz. The maximum amplitude of UWB signal is 214 mV, the pulse is during of 3 ns and the pulse repetition period (PRP) is 32 ns. The power consumption is approximately equal to 26 mW at a voltage supply of 2.5 V. This topology is designed in CMOS 0.35 lm AMS process technology.

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Section: Introductionmentioning

confidence: 99%

“…There are several approaches to generate pulses, such as via derivative of Gaussian pulses or digital combination technique [10][11][12][13][14][15]. Accordingly, Pulse-shaping techniques are used at very low energy levels for short-range and high-bandwidth.…”

Section: Introductionmentioning

confidence: 99%

New design of 3.2–4.8 GHz generator for multi-bands architecture of UWB communication

Issa

Kachouri

Samet

2011

Analog Integr Circ Sig Process

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“…Special solid-state components are commonly utilized as pulse sharpeners. Avalanche transistors, step recovery diodes (SRD) [1], tunnel diodes [2], bipolar transistors [3], and FETs [4] are used. Avalanche transistors are advantageous as highpower sharpeners, but the maximal usable pulse repetition frequency and the transistor lifetime are limited.…”

Section: Introductionmentioning

confidence: 99%

Multimode Fibers for Compensating Intermodal Dispersion of Graded-Index Multimode Fibers

Guan

Takenaga

Matsuo

et al. 2004

J. Lightwave Technol.

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50 lm core. The quality of image and sound was very good in all channels. Due to the higher signal loss and low laser power the optimum modulation indices were around 8…10%, which is roughly a triple the values encountered in CATV systems. The high-transmission loss in MM fiber limits the number of transmitted channels. This restriction may be overcome using lasers with greater optical powers. Moreover, these limitations are much relaxed for the transmission of digital video signals, whose requirements for CNR and nonlinearities are not so strict. ABSTRACT: A compact Ultra-Wideband subnanosecond pulse generator is described in this article. The fundamental part of the generator consists of a step recovery diode (SRD), which works as a waveform edge sharpener. The SRD is included in a compact pulse-forming network, which is used to form a narrow Gaussian pulse. The proposed circuit solution utilizes the performance of the SRD effectively with minimal requirements regarding the driver stage of the generator. The measurements show the waveform and power spectrum of the Gaussian pulse that is generated.

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“…avalanche transistor, bipolar diode [23], tunnel diode [24], Step Recovery Diode (SRD) [25] and FETs [26]. Avalanche diodes are advantageous as high power sharpener but have the disadvantage in the limitation of the maximum pulse repetition frequency, because of the power dissipation in the transistor, Tunnel diodes offer the fastest transition time (sub-picosecond) at very low power (about mW).…”

Section: Figure 14: Radar Classificationsmentioning

confidence: 99%

“…W ilkinson power divider, are basically narrowband and distort U W B waveforms; In addition, applying a short U W B pulse results in unwished reflections and ringing at other ports. Some dividers/combiners using planar multilayer techniques have also been described in the literature [142], [143]. Regrettably those dividers/combiners show proper U W B performance, but unfortunately are suitable primarily for the higher U W B band ranging between (3.1-10.6)…”

Section: Combining Two Identical Pulse Generatorsmentioning

confidence: 99%

Design and Implementation of a UWB Radar Sensor for Non-Destructive Application

Ahajjam¹

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Large amplitude picosecond step generation with FETs

Cited by 22 publications

References 3 publications

New design of 3.2–4.8 GHz generator for multi-bands architecture of UWB communication

New design of 3.2–4.8 GHz generator for multi-bands architecture of UWB communication

Multimode Fibers for Compensating Intermodal Dispersion of Graded-Index Multimode Fibers

Design and Implementation of a UWB Radar Sensor for Non-Destructive Application

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