43 research outputs found
Инфекционные поражения половых путей у женщин репродуктивного возраста вирусом папилломы человека
МОЧЕПОЛОВЫЕ БОЛЕЗНИЖЕНСКИЕ БОЛЕЗНИПАПИЛЛОМАВИРУС ЧЕЛОВЕКАПАПИЛЛОМАВИРУСНЫЕ ИНФЕКЦИИДНК-ВИРУСНЫЕ ИНФЕКЦИИОНКОГЕННОВИРУСНЫЕ ИНФЕКЦИИРЕПРОДУКЦИ
High-gain and high-linearity MMIC GaN Doherty Power Amplifier with 3-GHz bandwidth for Ka-band satellite communications
This letter presents the design of a Doherty power amplifier (DPA) for satellite applications in the Ka -band downlink (17.3–20.3 GHz) implemented on a 100-nm GaN–Si HEMT technology. The design aims to achieve high gain and very high intrinsic linearity over a wide bandwidth of 3 GHz. The experimental characterization on the fabricated chip demonstrates that the DPA can maintain a noise-to-power ratio (NPR) higher than 25 dB and power-added efficiency (PAE) of 30% while providing 36 dBm of output power, when tested with a 100-MHz uniformly distributed signal, achieving state-of-the-art performance among the integrated power amplifiers for satellite communications
On Flexibility and Reconfigurability of a Hybrid Mode Frequency Synthesizer for Multi- Radio Applications
International audienceThis paper describes the background and main outcomes of a research project supported by the Czech Grant Agency under the grant number 102/08/H027. The project describes architecture and performance of a dual mode frequency synthesizer that has been proposed for multi-radio operation. An overview of results that have been carried out during the second year of activity of the grant project is presented as well