Search Results - "Villegas, Martine"

Modified Polar Sigma-Delta Transmitter for Multiradio Applications by Suarez Penaloza, Martha Liliana, Valenta, Václav, Baudoin, Geneviève, Villegas, Martine, Marsálek, Roman

“…Radio transmitters capable of transforming variable envelope signals into constant envelope signals can be associated with high-efficiency switched mode power…”
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Modified Polar Sigma-Delta Transmitter for Multiradio Applications by Suarez Penaloza, MarthaLiliana, Valenta, Václav, Baudoin, Geneviève, Villegas, Martine, Maršálek, Roman

“…Radio transmitters capable of transforming variable envelope signals into constant envelope signals can be associated with high-efficiency switched mode power…”
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GaN/Si vs GaAs LNA Linear and Nonlinear Characterizations, New FOMs, in Millimeter Wave T/R Chip Context by Letailleur, Lucas, Hajjar, Ahmad Al, Villegas, Martine, Edoua K, Charle, El Kamouchi, Majid, Leblanc, Remv

“…This paper presents a comparative performance analysis of two LNAs realized in GaAs and GaN technologies for millimeter wave T/R chip (transceiver/receiver)…”
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Hybrid Dual-Mode Frequency Synthesis for Cognitive Multi-radio Front-Ends by Valenta, Václav, Baudoin, Geneviève, Villegas, Martine, Maršálek, Roman

“…This paper investigates a novel approach to reconfigurable frequency synthesis for flexible radio transceivers in future cognitive multi-radios. The frequency…”
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Performance Analysis of Multi-radio Transmitter with Polar or Cartesian Architectures associated with High Efficiency Switched-Mode Power Amplifiers by Baudoin, Geneviève, Villegas, Martine, Suarez, Martha, Diet, Antoine, Robert, Fabien

“…This paper deals with wireless multi-radio transmitter architectures operating in the frequency band of 800 MHz – 6GHz. As a consequence of the constant…”
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Linearity/efficiency trade-off according to back off for HPA GaN using mm-Wave modulated signals by Letailleur, Lucas, Villegas, Martine, Hajjar, A. Al, Kacou, C. Edoua

“…The evolution of wireless communication systems leads to an increasing use of mm-wave. This makes it possible to achieve very high data rates using OFDM…”
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Nonlinear characterization of a GaN power amplifier under antenna impedance mismatch in a mm-wave T/R chip context by Hajjar, Ahmad Al, Letailleur, Lucas, Villegas, Martine, Gasmi, Ahmed, Deremaux, Valentin

“…This paper presents the characterization of a GaN power amplifier (PA) designed for 5G FR2 base station or Satcom links. The characterizations are made in K…”
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Survey on spectrum utilization in Europe: Measurements, analyses and observations by Valenta, V, Maršálek, R, Baudoin, G, Villegas, M, Suarez, M, Robert, F

“…This paper presents major results and comparisons of radio spectrum utilization measurements that have been carried out in three different locations in Europe,…”
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Performance Analysis of Multiradio Transmitter with Polar or Cartesian Architectures Associated with High Efficiency Switched-Mode Power Amplifiers (invited paper) by F. Robert, A. Diet, M. Suarez, M. Villegas, G. Baudoin

“…This paper deals with wireless multi-radio transmitter architectures operating in the frequency band of 800 MHz – 6 GHz. As a consequence of the constant…”
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EER–LINC RF transmitter architecture for high PAPR signals using switched power amplifiers by Diet, A., Villegas, M., Baudoin, G.

“…Digital radio communications uses nowadays different modulation schemes with high data rate possibilities. Designing a multi-standard linearized transmitter is…”
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65nm CMOS Burst Generator for Ultra-Wideband Low Data Rate Systems by Marchaland, D., Badets, F., Villegas, M., Belot, D.

“…This paper presents a novel burst generator architecture dedicated to Ultra Wideband wireless communication systems based on Impulse Radio techniques. Bursts…”
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A 60 GHz Low-Noise Amplifier for Detection Systems by Diao, P. S., Alves, T., Poussot, B., Villegas, M.

“…In this paper, we present a 60 GHz low-noise amplifier (LNA) to improve the performance of detection systems. The LNA is designed in GaAs metamorphic high…”
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Potentiality of a low power 60 GHz transceiver approach for EEG/ECG WSN medical applications by Abdaoui, Rahma, Villegas, Martine, Baudoin, Genvieve

“…This article focuses on specifications and performances analysis of impulse On Off Keying transceiver architectures for low power indoor communications…”
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Digital predistortion with automatic determination of the Crest Factor Reduction gain, principle and experimental validation by Mbaye, Amadou, Baudoin, Genevieve, Gouba, Abel, Louet, Yves, Villegas, Martine

“…Digital predistortion (DPD) and Crest Factor Reduction (CFR) are applied separately in radio frequency power amplifiers (PAs) in general. This paper proposes a…”
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Effect and adaptive correction of impedance mismatch between antenna and power amplifier on digital predistortion by Mbaye, Amadou, Baudoin, Genevieve, Villegas, Martine, Gotthans, Tomas

“…Digital predistortion (DPD) is a powerful and cost-effective technique to linearize Power Amplifier (PA). In radio-frequency emitters, the PA and antenna are…”
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Combining Crest Factor Reduction and digital predistortion with automatic determination of the necessary Crest Factor Reduction gain by Mbaye, Amadou, Baudoin, Genevieve, Gouba, Abel, Louet, Yves, Villegas, Martine

“…Digital predistortion (DPD) and Crest Factor Reduction (CFR) are applied separately in radio frequency power amplifiers (PAs) in general. This paper proposes a…”
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Influence of time and processing mismatches between phase and envelope signals in linearization systems using envelope elimination and restoration, application to Hiperlan2 by Baudoin, G., Berland, C., Villegas, M., Diet, A.

“…This paper is a theoretical and experimental study of the influence of time and processing mismatches between the envelope and the phase of an OFDM in an…”
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A differentially-fed four-port printed antenna for high throughput transmitters at 60 GHz by Hamouda, Cherif, Laheurte, Jean Marc, Villegas, Martine, Poussot, Benoit

“…A 60 GHz differentially-fed four-port printed antenna (DFFPPA) is proposed in the context of a high data rate transmitter. The transmitter architecture is…”
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Narrowband interference mitigation in UWB communication with energy detector by Ekome, S. M., Baudoin, G., Villegas, M., Schwoerer, J.

“…Ultra wideband (UWB) is a reliable candidate for supporting a physical layer in Body Area Networks (BAN) and because of their wideband, UWB systems can have…”
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Design of a low noise TIA between 4.4 and 5 GHz for RoF applications on a GaAs pHEMT technology by Kacou, Charles Edoua, Polleux, Jean Luc, Villegas, Martine, Chretien, Gerald, LeBorgne, Alain

“…In this paper a low noise trans-impedance amplifier (TIA) is presented between 4.4 GHz and 5 GHz in a GaAs pHEMT technology using a commercial photodiode…”
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