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Grebennikov
Andrei Grebennikov, Linz AT
| Patent application number | Description | Published |
|---|---|---|
| 20100093293 | RF Circuit with Improved Antenna Matching - In one embodiment, RF front-end circuit includes a tunable matching network having an input coupled to an RF interface port, a directional coupler with a first connection coupled to an RF input of a mixer, a second connection coupled to an RF signal generation port, and a third connection coupled to an output of the tunable matching network. The directional coupler is configured to direct a signal from the RF signal generation port to the tunable matching network and to direct a signal from the tunable matching network port to the RF port of the mixer. The RF front-end circuit also has a tunable matching network control unit coupled to the tunable matching network. The control unit is configured to optimize an impedance match between the RF interface port and the output of the tunable matching network. | 04-15-2010 |
Andrei Grebennikov, Dublin IE
| Patent application number | Description | Published |
|---|---|---|
| 20100060353 | Power amplifier linearization using RF feedback - The power amplifier mainly includes a main amplifier, two splitters, one combiner, one subtracter, two phase shifters, one attenuator and one error amplifier. The splitters, subtracter and combiner are designed in the form of 90-degree or quadrature hybrid couplers. A quadrature hybrid can be implemented with any lumped or transmission-line elements and has an important advantage compared to the in-phase splitter that at equal values of reflection coefficients from loads connected to the in phase and 90° phase shift terminals, the reflection wave is lacking at the main input terminal and, consequently, the input voltage standing wave ratio of a quadrature hybrid does not depend on the equal load mismatch level. | 03-11-2010 |
Andrei Grebennikov, Munchen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090111401 | TRANSMITTER ARRANGEMENT - A transmitter arrangement includes a first amplifier arrangement and a second amplifier arrangement. The first amplifier arrangement includes a first amplification path and a second amplification path. The first amplification path is adapted to amplify signals comprising a data content according to a first communication standard. The second amplification path is adapted to amplify signals comprising a data content according to a second communication standard. The second amplifier arrangement further includes a first and second amplification path sharing at least one common amplifier stage that is adapted to amplify signals having a data content according at least to the second communication standard. | 04-30-2009 |
Evgeny P. Grebennikov, Moscow RU
| Patent application number | Description | Published |
|---|---|---|
| 20110166333 | NANOCOMPOSITE MATERIAL - The invention relates to nanotechnology and is directed at nanocomposite materials with effectively controllable optical properties which can be used in non-linear optics, information engineering, for designing optical memory means etc. The inventive nanocomposite material comprises nanoparticles, intermediate bonding molecule particles which modify the space configuration when they are exposed to an external light action, and bondable molecule particles which exhibit the optical properties near nanoparticles, wherein the nanoparticles, intermediate bonding molecules and bondable molecules are connected in series so as to form a three-dimensional cluster structure. Moreover, the intermediate bonding molecule particles which modify the space configuration when they are exposed to an external light action can contain additional inclusions in the form of functional substituents which enhance the bonding properties thereof. | 07-07-2011 |