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Your search keyword '"Saoudi, Hanen"' showing total 8 results
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8 results on '"Saoudi, Hanen"'

5. A Multiband, Spectrally-Efficient Impulse Radio Transmitter Design with Low-Complexity CMOS Pulse Generator for IEEE 802.15.4a Application.

Author

Saoudi, Hanen, Ghariani, Hamadi, and Lahiani, Mongi

Subjects
*PULSE generators, *RADIO transmitters & transmission, *VOLTAGE-controlled oscillators, *POWER amplifiers, *ENERGY consumption, *DESIGN techniques, *TRANSMITTERS (Communication)
Abstract

A novel multiband impulse radio ultra-wideband (MB-IR-UWB) transmitter with an energy-efficient and low-complexity pulse generator design technique compliant with the IEEE 802.15.4a standard is investigated in this paper. This transmitter is made up of a new differential narrow triangular pulse generator, a new multiband voltage-controlled oscillator (VCO), an active mixer and a variable-gain power amplifier (PA). It operates at 14 UWB bands and generates an output signal with the duration of 3 ns, more than 500 MHz of channel bandwidth and more than 20 dB of sidelobe suppression, while achieving an average energy efficiency of 51.36 pJ/pulse from 1.4-V supply. Improving spectral flexibility and worldwide compliance is the major contribution brought by this paper to make this circuit as a multifunction wireless device well suited for low-cost, low-power multiband applications. [ABSTRACT FROM AUTHOR]

Published
2020
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8. 3.1–10.6 GHz high linearity, excellent gain flatness CMOS power amplifier for UWB applications using stagger tuning technique

Author

Mohamed Dhieb, Saoudi Hanen, Mongi Lahiani, and Hamadi Chariani

Subjects
Physics, Frequency band, Flatness (systems theory), Amplifier, RF power amplifier, Linearity, 020206 networking & telecommunications, 02 engineering and technology, 03 medical and health sciences, 0302 clinical medicine, Control theory, 0202 electrical engineering, electronic engineering, information engineering, Return loss, Electronic engineering, Cascode, 030217 neurology & neurosurgery, Intermodulation
Abstract

In this paper, an Ultra-Wide-Band (UWB) RF power amplifier (PA) which provides some great features such as high and flat gain, low power, small group delay variation and a greater stability across the entire spectrum from 3.1GHz to 10.6 GHz is proposed. The UWB PA that it is implemented in 0.18μm CMOS technology employs stagger tuning technique which incorporates two stage amplifier connected in cascode configuration to establish a wider bandwidth. Low power consumption is decreased by employing the current-reuse topology and high linearity is achieved by using the self-biased circuit. The simulation results show that the proposed UWB PA has an excellent gain flatness of 18±0.2 dB and flat and low noise figure (NF) of 2.63±0.29 over the frequency band of interest. The PA design realizes a good phase linearity property (group-delay-variation) of ±25 ps over the whole band, so it is unconditionally stable. An input return loss (S11) inferior to −10dB, output return loss (S22) smaller than −8.4dB and an excellent reverse isolation S12 less than −30 dB. The input third-order intermodulation point (IIP3) is 2.25 dBm at 7 GHz to ensure more linearity.

Published
2016

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