A low power 3.1&amp;#x2013;7.5 GHz tunable pulse generator for impulse radio UWB

Radic, Jelena; Djugova, Alena; Nagy, Laszlo; Videnović-Mišić, Mirjana

doi:10.1109/sisy.2012.6339557

Cited by 5 publications

(4 citation statements)

References 15 publications

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“…Nevertheless, as the main drawback of the former technology is higher IC fabrication cost, the later process is chosen as optimal solution in this work. The ring oscillator-based pulse generator designs in 0.18 μm technology that combine proposed methods are presented in [11], [12].…”

Section: Discussionmentioning

confidence: 99%

Comparison of Feedback Influence on Ring Oscillator Performance for IR-UWB Pulse Generator in 0.13 μm and 0.18 μm CMOS Technologies

Radic

Djugova

Nagy

et al. 2013

IFIP Advances in Information and Communication Technology

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Abstract.A CMOS three-stage ring oscillator is examined in UMC 0.13 μm and 0.18 μm technologies. The influence of PMOS transistor and resistor, as inverter feedbacks, on the ring oscillator frequency and the peak-to-peak amplitude is investigated in both technologies. Furthermore, as the ring oscillator usually drives a buffer in pulse generator/transmitter chain, dependence of its Figures of Merit on the buffer feedback is presented in the paper. Simulation results showed that the ring oscillator frequency is strongly dependent on the inverter feedback. The presented techniques can be used to increase (resistive feedback) and control (PMOS transistor feedback) the ring oscillator frequency. As the ring oscillator is a part of an IR-UWB (Impulse Radio Ultra Wide Band) pulse generator, its oscillating frequency determines the spectrum central frequency and has significant effect on spectrum fitting within UWB FCC mask.

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Section: Discussionmentioning

confidence: 99%

Comparison of Feedback Influence on Ring Oscillator Performance for IR-UWB Pulse Generator in 0.13 μm and 0.18 μm CMOS Technologies

Radic

Djugova

Nagy

et al. 2013

IFIP Advances in Information and Communication Technology

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“…Logic gates are also used to generate Gaussian pulses [8]. To comply with the FCC requirements, pulse shaping filters are used to transform the generated pulse to a higher order derivatives Gaussian pulse [9]. This paper proposes three different UWB PGs.…”

Section: Uwb Pulse Generationmentioning

confidence: 99%

“…8. The controlled 21-stage ring oscillator is based on the same design presented in [9], [12]. An NMOS transistor is connected in series with the other 21 stages as shown in Fig.…”

Section: Design 2: a Controlled 21-stage Ring Oscillatormentioning

confidence: 99%

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Design and Analysis of a Low Power UWB Pulse Generators

Eisa¹,

Issa²,

Shehata³

et al. 2014

IJCEE

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Abstract-This paper presents three configurations of Ultra Wideband (UWB) Pulse Generators (PGs). The Generators target low power applications operating in the frequency range 3.1-10.6 GHz. The designs use logic gates and buffered filters to generate a Gaussian 5th derivative pulse. The used technology is 0.13 µm from TSMC. The lowest power consumption and highest BW achieved are 0.13 mW and 7.1 GHz respectively. In terms of Power Spectral Density (PSD), the designs comply with the -41.3 dBm FCC requirements.Index Terms-Ultra wideband, pulse generators, gaussian pulse, ring oscillator. I. INTRODUCTIONSignals having a Bandwidth (BW) of 500 MHz or a Fractional Bandwidth (BWf) less than or equal to 0.2 are considered as UWB signals according to the Federal Communications Commission (FCC) definition [1]. In order for UWB applications to coexist with common wireless communication systems without any interference, the FCC has defined PSD masks for different applications. Indoor UWB applications have an allocated bandwidth that extends from 3.1 to 10.6 GHz with a maximum PSD of -41.3 dBm. This PSD level represents the unintentional power radiated from television sets or monitors. UWB signals are characterized by short pulses with duration less than 1 nsec, relatively low power and wide BW. These characteristics migrate UWB from military applications towards commercial applications. Because of its wide BW, UWB signals are suitable for high data rate applications over short distances (several meters) such as wireless Personal Area Networks (WPAN) [2]. UWB can even be used for shorter distance applications such as Body Area Networks (BAN) [3]. Besides, high data rates UWB signals can also be used for low data rate with higher range as in Wireless Sensor Networks (WSN) [4] and Radio Frequency Identification (RFID) applications [5].

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