Patents by Inventor Sami Vilhonen
Sami Vilhonen 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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Publication number: 20230361723Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: ApplicationFiled: July 19, 2023Publication date: November 9, 2023Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Publication number: 20220029587Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: ApplicationFiled: July 1, 2021Publication date: January 27, 2022Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Patent number: 11223322Abstract: A mobile terminal including an up-converter converting a baseband (BB) signal into a radio frequency (RF) signal and a controller controlling a voltage applied to the up-converter is provided. The up-converter includes a first transistor and a second transistor each having a gate to which a baseband voltage is applied, a third transistor having a drain connected in parallel to a drain of the first transistor, and a fourth transistor having a drain connected in parallel to a drain of the second transistor, and the up-converter and the mobile terminal with improved phase linearity characteristics may be provided.Type: GrantFiled: April 5, 2018Date of Patent: January 11, 2022Assignee: LG ELECTRONICS INC.Inventors: Ossi Toivonen, Sami Vilhonen
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Publication number: 20210376728Abstract: A switched mode power supply comprises a control signal generator arranged to generate first and second control signals via first and second outputs, respectively, which are coupled to respective first and second inputs of a switching stage, by means of respective first and second control signal paths. The switching stage is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element by coupling it alternately to first and second supply voltages. An adjustable delay stage in one of the first and second signal paths is arranged to control an adjustable delay so that a first delay experienced by the first control signal passing from the control signal generator's first output to the switching stage's first input is substantially equal to a second delay experienced by the second control signal passing from the control signal generator's second output to the switching stage's second input.Type: ApplicationFiled: July 7, 2021Publication date: December 2, 2021Inventors: Kimmo Koli, Janne Peltonen, Sami Vilhonen
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Patent number: 11088619Abstract: A switched mode power supply comprises a control signal generator arranged to generate first and second control signals via first and second outputs, respectively, which are coupled to respective first and second inputs of a switching stage, by means of respective first and second control signal paths. The switching stage is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element by coupling it alternately to first and second supply voltages. An adjustable delay stage in one of the first and second signal paths is arranged to control an adjustable delay so that a first delay experienced by the first control signal passing from the control signal generator's first output to the switching stage's first input is substantially equal to a second delay experienced by the second control signal passing from the control signal generator's second output to the switching stage's second input.Type: GrantFiled: October 27, 2017Date of Patent: August 10, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kimmo Koli, Janne Peltonen, Sami Vilhonen
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Publication number: 20210218369Abstract: A mobile terminal including an up-converter converting a baseband (BB) signal into a radio frequency (RF) signal and a controller controlling a voltage applied to the up-converter is provided. The up-converter includes a first transistor and a second transistor each having a gate to which a baseband voltage is applied, a third transistor having a drain connected in parallel to a drain of the first transistor, and a fourth transistor having a drain connected in parallel to a drain of the second transistor, and the up-converter and the mobile terminal with improved phase linearity characteristics may be provided.Type: ApplicationFiled: April 5, 2018Publication date: July 15, 2021Applicant: LG ELECTRONICS INC.Inventors: Ossi TOIVONEN, Sami VILHONEN
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Patent number: 11057005Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: GrantFiled: September 6, 2019Date of Patent: July 6, 2021Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Publication number: 20190393844Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: ApplicationFiled: September 6, 2019Publication date: December 26, 2019Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Patent number: 10476538Abstract: A mobile terminal performing harmonic rejection includes a plurality of baseband units generating a baseband signal; a plurality of up-converters converting the baseband signal into a radio frequency (RF) signal; and a controller controlling phases of a plurality of signals applied to the plurality of baseband units and the plurality of up-converters. Meanwhile, the controller may perform at least one of a harmonic rejection mode, a first non-harmonic rejection mode for improving a signal-to-noise ratio (SNR), and a second non-harmonic rejection mode for improving linearity to provide a transmitting part having improved harmonic distortion characteristics and the mobile terminal having the transmitting part.Type: GrantFiled: April 5, 2018Date of Patent: November 12, 2019Assignee: LG ELECTRONICS INC.Inventors: Harri Riihihuhta, Sami Vilhonen, Samu Laaja
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Patent number: 10454431Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: GrantFiled: March 9, 2018Date of Patent: October 22, 2019Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Publication number: 20190260408Abstract: A mobile terminal performing harmonic rejection includes a plurality of baseband units generating a baseband signal; a plurality of up-converters converting the baseband signal into a radio frequency (RF) signal; and a controller controlling phases of a plurality of signals applied to the plurality of baseband units and the plurality of up-converters. Meanwhile, the controller may perform at least one of a harmonic rejection mode, a first non-harmonic rejection mode for improving a signal-to-noise ratio (SNR), and a second non-harmonic rejection mode for improving linearity to provide a transmitting part having improved harmonic distortion characteristics and the mobile terminal having the transmitting part.Type: ApplicationFiled: April 5, 2018Publication date: August 22, 2019Applicant: LG ELECTRONICS INC.Inventors: Harri RIIHIHUHTA, Sami VILHONEN, Samu LAAJA
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Patent number: 10338646Abstract: A mobile terminal according to the present invention includes a main transmitter to amplify and transmit a first signal of a first frequency band through a first path and a second path, and an auxiliary transmitter to amplify and transmit a second signal of a second frequency band through a third path. The mobile terminal further includes a controller to control the amplified first signal and the amplified second signal to be combined with each other when the distortion signal is to occur in frequency bands adjacent to the first frequency band due to the amplified first signal, thereby providing a radio frequency (RF) front end and a mobile terminal with improved non-linearity.Type: GrantFiled: April 5, 2018Date of Patent: July 2, 2019Assignee: LG ELECTRONICS INC.Inventors: Sami Vilhonen, Harri Riihihuhta, Jari Heikkinen
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Publication number: 20180198422Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: ApplicationFiled: March 9, 2018Publication date: July 12, 2018Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Patent number: 9948248Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: GrantFiled: February 23, 2015Date of Patent: April 17, 2018Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Publication number: 20180069476Abstract: A switched mode power supply comprises a control signal generator arranged to generate first and second control signals via first and second outputs, respectively, which are coupled to respective first and second inputs of a switching stage, by means of respective first and second control signal paths. The switching stage is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element by coupling it alternately to first and second supply voltages. An adjustable delay stage in one of the first and second signal paths is arranged to control an adjustable delay so that a first delay experienced by the first control signal passing from the control signal generator's first output to the switching stage's first input is substantially equal to a second delay experienced by the second control signal passing from the control signal generator's second output to the switching stage's second input.Type: ApplicationFiled: October 27, 2017Publication date: March 8, 2018Inventors: Kimmo Koli, Janne Peltonen, Sami Vilhonen
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Patent number: 9819267Abstract: A switched mode power supply (100) comprises a reactive element (10) and a control signal generator (30) is arranged to generate a first control signal at a first output (31) of the control signal generator (30) and a second control signal at a second output (32) of the control signal generator (30). The first output (31) of the control signal generator (30) is coupled to a first input (21) of a switching stage (20) by means of a first control signal path (40) and the second output (32) of the control signal generator (30) is coupled to a second input (22) of the switching stage (20) by means of a second control signal path (50). The switching stage (20) is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element (10) by coupling it alternately to first and second supply voltages.Type: GrantFiled: September 3, 2014Date of Patent: November 14, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Kimmo Koli, Janne Peltonen, Sami Vilhonen
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Publication number: 20170070197Abstract: An amplifier for converting a single-ended input signal to a differential output signal. The amplifier comprises a first transistor, a second transistor, a third transistor and a fourth transistor. The first transistor, configured in common-source or common-emitter mode, receives the single-ended input signal and generates a first part of the differential output signal. The second transistor, also configured in common-source or common-emitter mode, generates a second part of the differential output signal. The third and fourth transistors are capacitively cross-coupled. The amplifier further comprises inductive degeneration such that a source or emitter of the first transistor is connected to a first inductor and a source or emitter of the second transistor is connected to a second inductor.Type: ApplicationFiled: February 23, 2015Publication date: March 9, 2017Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Pete Sivonen, Jarkko Jussila, Sami Vilhonen
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Patent number: 9509546Abstract: A modulation processor (500) comprises a first processing stage (110) and a second processing stage (120). The first processing stage (110) comprises a phase generation stage (117) arranged to generate a phase signal (PM) indicative of a phase of a modulation signal (S), a differentiation stage (118) arranged to generate a frequency signal (FM) by differentiating the phase signal (PM), and a first bandwidth reduction stage (113) arranged to generate a first output signal (FM_LP) by reducing a bandwidth of the frequency signal (FM). The second processing stage (120) is arranged to generate a second output signal (AM*) proportional to the modulation signal (S) with its phase retarded by an angle equal to an integral of the first output signal (FM_LP).Type: GrantFiled: April 30, 2014Date of Patent: November 29, 2016Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Magnus Nilsson, Sami Vilhonen
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Patent number: 9407274Abstract: Systems and methods for mitigating interference in a Local Oscillator (LO) signal generated by a Phase-Locked Loop (PLL) are disclosed. In one embodiment, a system includes a PLL and an error compensation subsystem. The PLL includes a Controlled Oscillator (CO) that provides a LO output signal based on a control signal, a phase detector that generates a phase detector output signal that is indicative of a phase error between a feedback signal that is a function of the LO output signal and a reference signal, and a loop filter that filters the phase detector output signal to provide the control signal for the CO. The error compensation subsystem applies, based on the phase detector output signal, a phase rotation to a signal derived from the LO output signal to thereby compensate for a phase error in the signal resulting from a phase error in the local oscillator output signal.Type: GrantFiled: April 29, 2014Date of Patent: August 2, 2016Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Samu Laaja, Sami Vilhonen
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Publication number: 20160197553Abstract: A switched mode power supply (100) comprises a reactive element (10) and a control signal generator (30) is arranged to generate a first control signal at a first output (31) of the control signal generator (30) and a second control signal at a second output (32) of the control signal generator (30). The first output (31) of the control signal generator (30) is coupled to a first input (21) of a switching stage (20) by means of a first control signal path (40) and the second output (32) of the control signal generator (30) is coupled to a second input (22) of the switching stage (20) by means of a second control signal path (50). The switching stage (20) is arranged to, responsive to the first and second control signals, alternately charge and discharge the reactive element (10) by coupling it alternately to first and second supply voltages.Type: ApplicationFiled: September 3, 2014Publication date: July 7, 2016Inventors: Kimmo Koli, Janne Peltonen, Sami Vilhonen