Patents by Inventor Kari Stadius
Kari Stadius has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11929815Abstract: A system (1) for beamforming of incoming radio-frequency signals is provided. The system includes at least one digital signal processor, DSP, a plurality of analogue-to-digital converters, ADC, each connected to the at least one DSP. Further, the system comprises a plurality of sample-and-hold, S&H, circuit groups, each comprising a plurality of sample-and-hold circuits additively connected to a respective ADC and a plurality of receiving antenna connections each connected to a respective S&H circuit in each group at one end and each antenna connection connected to a respective antenna. The system is configured to selectively alternate between a plurality of beamforming functionalities, wherein the receiver system is arranged to time-interleave the ADCs and control specific S&H circuits in each S&H group by at least one of time-interleave or disable specific S&H circuits depending on a set beamforming functionality. An associated method (100) is also provided.Type: GrantFiled: November 19, 2021Date of Patent: March 12, 2024Assignee: SAAB ABInventors: Kalle Spoof, Marko Kosunen, Jussi Ryynanen, Miikka Tenhunen, Vishnu Unnikrishnan, Kari Stadius
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Publication number: 20230396310Abstract: The proposed disclosure relates to a method (100) and system (1) arranged to provide beamforming of incoming radio-frequency signals, the receiver system (1) comprising at least one digital signal processor, DSP (2), a plurality of analogue-to-digital converters, ADC (3), each connected to the at least one DSP (2). Further the system comprises a plurality of sample-and-hold, S&H, circuit groups (4), each comprising a plurality of sample-and-hold circuits (5) additively connected to a respective ADC (3) and a plurality of receiving antenna connections (6) each connected to a respective S&H circuit (5) in each group (4) at one end and each antenna connection (6) connected to a respective antenna (7).Type: ApplicationFiled: November 19, 2021Publication date: December 7, 2023Inventors: Kalle SPOOF, Marko KOSUNEN, Jussi RYYNANEN, Miikka TENHUNEN, Vishnu UNNIKRISHNAN, Kari STADIUS
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Patent number: 11342888Abstract: According to an aspect, there is provided a method for power-amplification of a transmission signal, comprising: obtaining the transmission signal with phase and amplitude modulation; generating a power-amplified polar signal for approximating a power-amplified transmission signal by power-amplifying a first constant-envelope signal with one of two or more first amplification factors based on the transmission signal; generating an outphasing pair of a first power-amplified outphasing signal and a second power-amplified outphasing signal based on the transmission signal; and combining the power-amplified polar signal, the first power-amplified outphasing signal and the second power-amplified outphasing signal to provide the power-amplified transmission signal.Type: GrantFiled: September 7, 2017Date of Patent: May 24, 2022Assignee: NOKIA SOLUTIONS AND NETWORKS OYInventors: Jerry Lemberg, Mikko Martelius, Marko Kosunen, Enrico Roverato, Kari Stadius, Jussi Ryynänen
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Publication number: 20200212848Abstract: According to an aspect, there is provided a method for power-amplification of a transmission signal, comprising: obtaining the transmission signal with phase and amplitude modulation; generating a power-amplified polar signal for approximating a power-amplified transmission signal by power-amplifying a first constant-envelope signal with one of two or more first amplification factors based on the transmission signal; generating an outphasing) pair of a first power-amplified outphasing signal and a second power-amplified outphasing signal based on the transmission signal; and combining the power-amplified polar signal, the first power-amplified outphasing signal and the second power-amplified outphasing signal to provide the power-amplified transmission signal.Type: ApplicationFiled: September 7, 2017Publication date: July 2, 2020Inventors: Jerry LEMBERG, Mikko MARTELIUS, Marko KOSUNEN, Enrico ROVERATO, Kari STADIUS, Jussi RYYNÄNEN
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Patent number: 8907710Abstract: A digitally controlled delay device includes at least one delay generating gate device, whose propagation delay is controlled by limiting operating current by means of a tail transistor that is controlled by its gate voltage, a gate control voltage control means for controlling the current limiting transistor gate voltage, and a bank of digitally controlled MOSFET transistors in parallel configuration, and the digital control is adapted to switch the transistors to off and to diode mode connection, current feeding means to feed current through the bank of MOSFET transistors, and the voltage over the bank of parallel transistors is used for gate source control voltage of the tail transistors.Type: GrantFiled: November 18, 2013Date of Patent: December 9, 2014Assignee: Broadcom CorporationInventors: Liangge Xu, Kari Stadius, Jussi Ryynanen
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Publication number: 20140077858Abstract: A digitally controlled delay device includes at least one delay generating gate device, whose propagation delay is controlled by limiting operating current by means of a tail transistor that is controlled by its gate voltage, a gate control voltage control means for controlling the current limiting transistor gate voltage, and a bank of digitally controlled MOSFET transistors in parallel configuration, and the digital control is adapted to switch the transistors to off and to diode mode connection, current feeding means to feed current through the bank of MOSFET transistors, and the voltage over the bank of parallel transistors is used for gate source control voltage of the tail transistors.Type: ApplicationFiled: November 18, 2013Publication date: March 20, 2014Applicant: BROADCOM CORPORATIONInventors: Liangge XU, Kari STADIUS, Jussi RYYNANEN
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Patent number: 8063669Abstract: Described is an apparatus that includes a frequency source and a plurality of time domain direct digital synthesizers each having an input connected to an output of the frequency source and an output providing an output frequency signal. A particular time domain direct digital synthesizer includes a sigma-delta modulator that functions as a second order multi-stage noise shaping sigma-delta modulator. In one exemplary embodiment sigma-delta modulator outputs provide a unitary-weighted word used to switch certain unit capacitors that comprise part of a delay modulator to produce a time-varying delay having a time-averaged value that directly corresponds to a binary value appearing on a plurality of phase accumulator outputs.Type: GrantFiled: November 6, 2008Date of Patent: November 22, 2011Assignee: Nokia CorporationInventors: Saska Lindfors, Kari Stadius, Liangge Xu, Tapio Rapinoja, Jussi Ryynanen, Risto H. S. Kaunisto, Aarno Parssinen
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Publication number: 20100109714Abstract: Described is an apparatus that includes a frequency source and a plurality of time domain direct digital synthesizers each having an input connected to an output of the frequency source and an output providing an output frequency signal. A particular time domain direct digital synthesizer includes a sigma-delta modulator that functions as a second order multi-stage noise shaping sigma-delta modulator. In one exemplary embodiment sigma-delta modulator outputs provide a unitary-weighted word used to switch certain unit capacitors that comprise part of a delay modulator to produce a time-varying delay having a time-averaged value that directly corresponds to a binary value appearing on a plurality of phase accumulator outputs.Type: ApplicationFiled: November 6, 2008Publication date: May 6, 2010Inventors: Saska Lindfors, Kari Stadius, Liangge Xu, Tapio Rapinoja, Jussi Ryynanen, Risto H.S. Kaunisto, Aarno Parssinen
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Publication number: 20070139124Abstract: A frequency generator is provided. The generator comprises two voltage controlled oscillators generating a first signal of a given multiple of a predetermined raster frequency, and a second signal of another given multiple of a predetermined raster frequency, dividers dividing the output signal of the oscillator until the frequency of both divided output signals is equal to the raster frequency, a filter arrangement connected to the output of the dividers, and a single sideband mixer. The mixer produces as output a signal having a frequency which is equal to the frequency of the output signal of either one of the oscillators or to the frequency of the output signal of either one of the oscillators from which the output signal of the filter arrangement has been subtracted or to which the output signal of the filter arrangement has been added.Type: ApplicationFiled: December 20, 2005Publication date: June 21, 2007Inventor: Kari Stadius