Search Results - "Valenta, Vaclav"

A Compact L-Band Reverse-Type Envelope Tracking System by Paul, Sophie, Wolff, Nikolai, Kuremyr, Tobias, Delepaut, Christophe, Valenta, Vaclav, Heinrich, Wolfgang, Bengtsson, Olof

“…This article presents the implementation and in-depth analysis of a compact <inline-formula> <tex-math notation="LaTeX">{L} </tex-math></inline-formula>-band…”
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Nonlinear Capacitance Effect on Stability and Stabilization of SiGe Power Amplifiers for 17.3-21.2 GHz SATCOM by Tsai, Tsung-Ching, Valenta, Vaclav, Ulusoy, Ahmet Cagri

“…This study investigates the impact of nonlinear capacitances of SiGe-HBT technology on the stability of power amplifier (PA) designs for 17.3-21.2 GHz…”
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Nonlinear Capacitance Compensation Technique in a Linearity-Enhanced and Broadband GaN PA MMIC for Ku -/ K -Band Applications by Gjurovski, Peco, Negra, Renato, Richard, Elodie, Valenta, Vaclav

“…This article reports on exploiting a nonlinear capacitance compensation technique to achieve high linearity for power amplifier (PA) designs in III-V…”
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A GaN-on-Si MMIC LNA for Spaceborne Cloud Profiling Radars and W -Band Telecom Links by Cuadrado-Calle, David, Kantanen, Mikko, Valenta, Vaclav, Ayllon, Natanael

“…The European Space Agency (ESA) has designed a 70-95 GHz gallium-nitride-on-silicon (GaN-on-Si) monolithic microwave integrated circuit (MMIC) low noise…”
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Electronically Steerable Antennas for Future Heterogeneous Communication Networks: Review and Perspectives by Chaloun, Tobias, Boccia, Luigi, Arnieri, Emilio, Fischer, Michael, Valenta, Vaclav, Fonseca, Nelson J. G., Waldschmidt, Christian

“…Satellite, fifth generation (5G), and sixth generation (6G) mobile communication systems operating at micro- and millimeter wave frequencies are an essential…”
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Guest Editorial by Valenta, Vaclav

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Design of MSR primary circuit with minimum pressure losses by Noga, Tomáš, Žitek, Pavel, Valenta, Václav

“…This article describes a design of a MSR primary circuit with minimum pressure losses. It includes a brief description of this type of a reactor and its…”
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Various methods to improve heat transfer in exchangers by Pavel, Zitek, Vaclav, Valenta

“…The University of West Bohemia in Pilsen (Department of Power System Engineering) is working on the selection of effective heat exchangers. Conventional shell…”
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5-35 GHz broadband if amplifier section in 0.13 μm SiGe technology for W-band heterodyne receiver RFICs by Reyaz, Shakila Bint, Jonsson, Rolf, Gustafsson, Andreas, Malmqvist, Robert, Strodl, Andreas, Valenta, Václav, Schumacher, Hermann, Kaynak, Mehmet

“…ABSTRACT This letter presents the results of a broadband intermediate frequency (IF) section radio frequency integrated circuit designed for a W‐band…”
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A 110 GHz LNA with 20dB gain and 4dB noise figure in an 0.13μm SiGe BiCMOS technology by Ulusoy, A. Cagri, Kaynak, Mehmet, Valenta, Vaclav, Tillack, Bernd, Schumacher, Hermann

“…In this paper, the authors present a monolithically integrated W-band low-noise-amplifier realized in an 0.13μm SiGe BiCMOS technology. The design utilizes a…”
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Solution of heat removal from nuclear reactors by natural convection by Zitek, Pavel, Valenta, Vaclav

“…This paper summarizes the basis for the solution of heat removal by natural convection from both conventional nuclear reactors and reactors with fuel flowing…”
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Parents of two-phase flow and theory of “gas-lift” by Zitek, Pavel, Valenta, Vaclav

“…This paper gives a brief overview of types of two-phase flow. Subsequently, it deals with their mutual division and problems with accuracy boundaries among…”
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Averaging of gradient in the space of linear triangular and bilinear rectangular finite elements by Dalík Josef, Valenta Václav

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Single-chip transmit-receive module with a fully integrated differential RF-MEMS antenna switch and a high-voltage generator for F-band radars by Valenta, Vaclav, Schumacher, Hermann, Wipf, S. Tolunay, Wietstruck, M., Goeritz, A., Kaynak, M., Winkler, Wolfgang

“…A single-chip solution for short-range F-band radar systems is presented. It is based on a Transmit-Receive (TR) module realized in a 130 nm BiCMOS process,…”
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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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F-band frequency octupler in 0.13-μm SiGe:C BiCMOS with 2 mW output power by Valenta, Vaclav, Shuai Yuan, Trasser, Andreas, Schumacher, Hermann

“…This paper presents design, implementation and measurement results of a high performance F-band frequency octupler (multiplier by eight) implemented in a…”
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High-gain GaN doherty power amplifier for Ka-band satellite communications by Valenta, Vaclav, Davies, Iain, Ayllon, Natanael, Seyfarth, Stefan, Angeletti, Piero

“…A Doherty power amplifier (DPA) implemented in 100 nm GaN process is presented. It features a peak Power Added Efficiency (PAE) of 37%, an output power of 35…”
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Experimental Demonstration of Test Cap Design for Space Transponder Applications by Alkhalifeh, Khaldoun, Valenta, Vaclav, Craeye, Christophe

“…Antenna test caps allow the testing of transmit and receive functionality of complete end-to-end radio frequency (RF) space systems in flight configuration…”
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A 5-W GaN Doherty Amplifier for Ka-Band Satellite Downlink With 4-GHz Bandwidth and 17-dB NPR by Piacibello, Anna, Giofre, Rocco, Quaglia, Roberto, Figueiredo, Ricardo, Carvalho, Nuno, Colantonio, Paolo, Valenta, Vaclav, Camarchia, Vittorio

“…This letter presents the design and experimental characterization of a GaN-Si monolithic Doherty power amplifier (PA) for the <inline-formula> <tex-math…”
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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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