Patents by Inventor Stein-Erik Weberg
Stein-Erik Weberg 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: 12348277Abstract: There is provided a method of testing an RF transceiver circuit and an RF transceiver circuit arranged to be operable in a test mode including a transmitter circuit portion and a receiver circuit portion, the receiver circuit portion including a mixer. The method involves the transmitter circuit portion generating a modulated signal and the receiver circuit portion receiving a continuous radio frequency wave. The mixer mixes the modulated signal with a signal derived from the continuous radio frequency wave to produce an output. A remainder of the receiver circuit portion processes the output of the mixer.Type: GrantFiled: December 1, 2021Date of Patent: July 1, 2025Assignee: Nordic Semiconductor ASAInventors: Tor Øyvind Vedal, Sverre Wichlund, Stein Erik Weberg
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Patent number: 11990925Abstract: A circuit portion for a radio transceiver comprises: a power amplifier for use when the transceiver operates in a transmission mode, a low-noise amplifier for use when the transceiver operates in a reception mode, a voltage control circuit portion, and a transformer. The transformer comprises a primary winding with a terminal for connecting to an antenna, and a secondary winding comprising a first terminal, a second terminal and a third terminal located between the first and second terminals. The power amplifier is connected to the secondary winding, the low-noise amplifier is connected to both the primary and secondary windings and the voltage control circuit portion is connected to the third terminal of the secondary winding. The voltage control circuit portion applies a first voltage to the third terminal when the transceiver operates in the transmission mode and applies a second, different voltage when the transceiver operates in the reception mode.Type: GrantFiled: September 14, 2022Date of Patent: May 21, 2024Assignee: Nordic Semiconductor ASAInventor: Stein Erik Weberg
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Publication number: 20240080111Abstract: There is provided a method of testing an RF transceiver circuit and an RF transceiver circuit arranged to be operable in a test mode comprising a transmitter circuit portion and a receiver circuit portion, the receiver circuit portion including a mixer. The method involves the transmitter circuit portion generating a modulated signal and the receiver circuit portion receiving a continuous radio frequency wave. The mixer mixes the modulated signal with a signal derived from the continuous radio frequency wave to produce an output. A remainder of the receiver circuit portion processes the output of the mixer.Type: ApplicationFiled: December 1, 2021Publication date: March 7, 2024Applicant: Nordic Semiconductor ASAInventors: Tor Øyvind VEDAL, Sverre WICHLUND, Stein Erik WEBERG
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Publication number: 20230098175Abstract: A circuit portion for a radio transceiver comprises: a power amplifier for use when the transceiver operates in a transmission mode, a low-noise amplifier for use when the transceiver operates in a reception mode, a voltage control circuit portion, and a transformer. The transformer comprises a primary winding with a terminal for connecting to an antenna, and a secondary winding comprising a first terminal, a second terminal and a third terminal located between the first and second terminals. The power amplifier is connected to the secondary winding, the low-noise amplifier is connected to both the primary and secondary windings and the voltage control circuit portion is connected to the third terminal of the secondary winding. The voltage control circuit portion applies a first voltage to the third terminal when the transceiver operates in the transmission mode and applies a second, different voltage when the transceiver operates in the reception mode.Type: ApplicationFiled: September 14, 2022Publication date: March 30, 2023Applicant: Nordic Semiconductor ASAInventor: Stein Erik Weberg
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Patent number: 11405070Abstract: A radio transceiver device comprises a transmit amplifier, a receive amplifier, an impedance matching circuit portion, and an antenna connection node for connection to an antenna. The impedance matching circuit portion is arranged between the antenna connection node and each of the transmit and receive amplifiers. The impedance matching circuit portion comprises a switch and an inductor and is arranged such that, in a receive mode of operation, the switch is first state and incoming signals from the antenna pass to the receive amplifier via the inductor. In a transmit mode of operation, the switch is in a second state and the transmit amplifier is coupled to a power supply rail VDD via the inductor.Type: GrantFiled: November 7, 2018Date of Patent: August 2, 2022Assignee: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Werner Luzi
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Publication number: 20200343931Abstract: A radio transceiver device comprises a transmit amplifier, a receive amplifier, an impedance matching circuit portion, and an antenna connection node for connection to an antenna. The impedance matching circuit portion is arranged between the antenna connection node and each of the transmit and receive amplifiers. The impedance matching circuit portion comprises a switch and an inductor and is arranged such that, in a receive mode of operation, the switch is first state and incoming signals from the antenna pass to the receive amplifier via the inductor. In a transmit mode of operation, the switch is in a second state and the transmit amplifier is coupled to a power supply rail VDD via the inductor.Type: ApplicationFiled: November 7, 2018Publication date: October 29, 2020Applicant: Nordic Semiconductor ASAInventors: Stein Erik WEBERG, Werner LUZI
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Patent number: 10230382Abstract: A phase locked loop comprises: a controllable oscillator 102; a variable divider arrangement 108, 110 which takes a signal from the controllable oscillator 102 and divides it by a variable amount to provide a lower frequency signal; a sigma-delta modulator 112 arranged to provide a control input to said variable divider arrangement 108, 110; and a phase detector triggered 104 by said lower frequency signal and a reference clock; wherein said phase locked loop is arranged to be operable in a normal mode in which the controllable oscillator 102 is controlled by a voltage from said phase detector 104 and a calibration mode in which the controllable oscillator 102 is controlled digitally by a signal from a calibration module 114 which receives an input from said variable divider arrangement 108, 110.Type: GrantFiled: December 14, 2015Date of Patent: March 12, 2019Assignee: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Ingil Sundsbø
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Patent number: 9843334Abstract: A phase locked loop frequency synthesizer is arranged to provide a target frequency output signal for a radio transmitter or receiver. The synthesizer comprises: a voltage controlled oscillator (2) operating at a first frequency; a first, fixed frequency divider to provide a second frequency, a pre-scaler to provide a variable frequency division of said second frequency to produce a third frequency, said pre-scaler comprising: a second frequency divider (14) connected to said first output (12) and providing a second output at a second frequency; and a phase detector (4) controlling said voltage controlled oscillator (2) on the basis of a comparison between a reference signal and a signal dependent on said third frequency; wherein the synthesizer is configured so that said first output (10, 12) provides said target frequency output signal.Type: GrantFiled: March 5, 2015Date of Patent: December 12, 2017Assignee: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Ola Bruset
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Publication number: 20170346496Abstract: A phase locked loop comprises: a controllable oscillator 102; a variable divider arrangement 108, 110 which takes a signal from the controllable oscillator 102 and divides it by a variable amount to provide a lower frequency signal; a sigma-delta modulator 112 arranged to provide a control input to said variable divider arrangement 108, 110; and a phase detector triggered 104 by said lower frequency signal and a reference clock; wherein said phase locked loop is arranged to be operable in a normal mode in which the controllable oscillator 102 is controlled by a voltage from said phase detector 104 and a calibration mode in which the controllable oscillator 102 is controlled digitally by a signal from a calibration module 114 which receives an input from said variable divider arrangement 108, 110.Type: ApplicationFiled: December 14, 2015Publication date: November 30, 2017Applicant: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Ingil Sundsbø
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Publication number: 20170346495Abstract: A variable frequency divider arrangement is arranged to divide a frequency of an incoming signal by a variable number D to provide a resultant signal. The arrangement comprises: a first counter having a first clock input and a first output undergoing a single cycle for P cycles of said first clock if a first control input is in a first state or undergoing a single cycle for P+1 cycles of said first clock if said first control input is in a second state; a second counter in series with said first counter 108 and having a second clock input and a second output undergoing a single cycle for every N cycles of said second clock, wherein N is an integer predetermined by a second control input; and a controller arranged to determine said first and second control inputs.Type: ApplicationFiled: December 11, 2015Publication date: November 30, 2017Applicant: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Johnny Pihl
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Publication number: 20170026050Abstract: A phase locked loop frequency synthesizer is arranged to provide a target frequency output signal for a radio transmitter or receiver. The synthesizer comprises: a voltage controlled oscillator (2) operating at a first frequency; a first, fixed frequency divider to provide a second frequency, a pre-scaler to provide a variable frequency division of said second frequency to produce a third frequency, said pre-scaler comprising: a second frequency divider (14) connected to said first output (12) and providing a second output at a second frequency; and a phase detector (4) controlling said voltage controlled oscillator (2) on the basis of a comparison between a reference signal and a signal dependent on said third frequency; wherein the synthesizer is configured so that said first output (10, 12) provides said target frequency output signal.Type: ApplicationFiled: March 5, 2015Publication date: January 26, 2017Applicant: Nordic Semiconductor ASAInventors: Stein Erik Weberg, Ola Bruset
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Patent number: 9100080Abstract: A digital radio receiver comprises: a first section arranged to receive an analog radio signal and to generate therefrom digital intermediate frequency I and Q channel samples, a second section arranged to convert said I and Q channel samples to a lower, baseband frequency, said second section comprising: a first coordinate rotation digital computer module arranged to perform a complex rotation of the I channel samples; a second coordinate rotation digital computer module arranged to perform a complex rotation of the Q channel samples; a phase accumulator arranged to provide an output signal representing a complex rotation to be applied to each of the I and Q channel samples, wherein the second section is arranged such that the phase accumulator output signal is modified by a phase offset signal prior to being supplied to one of the first and second coordinate rotation digital computers.Type: GrantFiled: May 1, 2014Date of Patent: August 4, 2015Assignee: NORDIC SEMICONDUCTOR ASAInventors: Sverre Wichlund, Stein Erik Weberg, Ingil Sundsbo
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Patent number: 8967856Abstract: A temperature sensing device for an integrated circuit comprises an oscillator (2) having a characteristic frequency dependent on the temperature and a digital counter (16) arranged to count a number of pulses generated by the oscillator (2) in a given time interval, or the time taken for the oscillator to generate a given number of pulses. Either of these gives a measured value. The device is configured to use a difference between the measured value and a stored reference value in a linearisation algorithm to estimate a temperature.Type: GrantFiled: February 7, 2012Date of Patent: March 3, 2015Assignee: Nordic Semiconductor ASAInventors: Ola Bruset, Stein-Erik Weberg, Per Carsten Skoglund, Werner Luzi
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Publication number: 20140334573Abstract: A digital radio receiver comprises: a first section arranged to receive an analogue radio signal and to generate therefrom digital intermediate frequency I and Q channel samples, a second section arranged to convert said I and Q channel samples to a lower, baseband frequency, said second section comprising: a first coordinate rotation digital computer module arranged to perform a complex rotation of the I channel samples; a second coordinate rotation digital computer module arranged to perform a complex rotation of the Q channel samples; a phase accumulator arranged to provide an output signal representing a complex rotation to be applied to each of the I and Q channel samples, wherein the second section is arranged such that the phase accumulator output signal is modified by a phase offset signal prior to being supplied to one of the first and second coordinate rotation digital computers.Type: ApplicationFiled: May 1, 2014Publication date: November 13, 2014Applicant: NORDIC SEMICONDUCTOR ASAInventors: Sverre Wichlund, Stein Erik Weberg, Ingil Sundsbo
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Publication number: 20140294042Abstract: A temperature sensing device for an integrated circuit comprises an oscillator (2) having a characteristic frequency dependent on the temperature and a digital counter (16) arranged to count a number of pulses generated by the oscillator (2) in a given time interval, or the time taken for the oscillator to generate a given number of pulses. Either of these gives a measured value. The device is configured to use a difference between the measured value and a stored reference value in a linearisation algorithm to estimate a temperature.Type: ApplicationFiled: February 7, 2012Publication date: October 2, 2014Applicant: NORDIC SEMICONDUCTOR ASAInventors: Ola Bruset, Stein-Erik Weberg, Per Carstemn Skoglund, Werner Luzi