Patents by Inventor Pietro Andreani
Pietro Andreani 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: 20230208357Abstract: Embodiments disclosed herein relate to oscillators including methods of operating the same, for example for use in radio frequency circuits. In an embodiment, an oscillator has cross-coupled transistors connected between a resonant circuit and a tail circuit. The resonant circuit and tail circuit have respective supply connections for powering the oscillator with an external power supply and the cross-coupled transistors have a bias circuit coupled to respective gates of the cross-coupled transistors and arranged to bias said transistors in an active region of operation. The tail circuit has a current source, a tail capacitor and a tail resistor coupled between a common node of the cross-coupled transistors and the supply connection of the tail circuit.Type: ApplicationFiled: June 4, 2020Publication date: June 29, 2023Inventor: Pietro ANDREANI
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Patent number: 10826433Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: GrantFiled: August 26, 2019Date of Patent: November 3, 2020Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Publication number: 20190379327Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: ApplicationFiled: August 26, 2019Publication date: December 12, 2019Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Patent number: 10505525Abstract: An oscillator circuit (100) comprises a first tank circuit (T1) comprising an inductive element (L) and a capacitive element (C) coupled in series between a first voltage rail (14) and a first drive node (12). A feedback stage (F) is coupled to a first tank output (13) of the first tank circuit (T1) and to the first drive node (12). The feedback stage (F) is arranged to generate, responsive to a first oscillating tank voltage present at the first tank output (13), a first oscillating drive signal at the first drive node (12) in-phase with a first oscillating tank current flowing in the inductive element (L) and the capacitive element (C), thereby causing the oscillator (100) to oscillate in a series resonance mode of the inductive element (L) and the capacitive element (C).Type: GrantFiled: August 9, 2017Date of Patent: December 10, 2019Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Pietro Andreani, Luca Fanori, Thomas Mattsson
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Patent number: 10411650Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: GrantFiled: November 17, 2017Date of Patent: September 10, 2019Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Publication number: 20190103458Abstract: An inductor layout comprising a first inductor and a second inductor. The first and second inductors are electrically and magnetically independent inductors concentrically arranged on an integrated circuit. At least one of the first and second inductors is a multi-loop inductor with a first axis of symmetry.Type: ApplicationFiled: October 3, 2018Publication date: April 4, 2019Inventors: Thomas Mattsson, Pietro Andreani
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Patent number: 10121845Abstract: An inductor layout comprising a first inductor and a second inductor. The first and second inductors are electrically and magnetically independent inductors concentrically arranged on an integrated circuit. At least one of the first and second inductors is a multi-loop inductor with a first axis of symmetry.Type: GrantFiled: February 11, 2016Date of Patent: November 6, 2018Assignee: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)Inventors: Thomas Mattsson, Pietro Andreani
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Publication number: 20180076769Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: ApplicationFiled: November 17, 2017Publication date: March 15, 2018Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Publication number: 20170338808Abstract: An oscillator circuit (100) comprises a first tank circuit (T1) comprising an inductive element (L) and a capacitive element (C) coupled in series between a first voltage rail (14) and a first drive node (12). A feedback stage (F) is coupled to a first tank output (13) of the first tank circuit (T1) and to the first drive node (12). The feedback stage (F) is arranged to generate, responsive to a first oscillating tank voltage present at the first tank output (13), a first oscillating drive signal at the first drive node (12) in-phase with a first oscillating tank current flowing in the inductive element (L) and the capacitive element (C), thereby causing the oscillator (100) to oscillate in a series resonance mode of the inductive element (L) and the capacitive element (C).Type: ApplicationFiled: August 9, 2017Publication date: November 23, 2017Inventors: Pietro Andreani, Luca Fanori, Thomas Mattsson
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Patent number: 9825590Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: GrantFiled: October 23, 2009Date of Patent: November 21, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Patent number: 9755627Abstract: An oscillator circuit comprises a first tank circuit comprising an inductive element and a capacitive element coupled in series between a first voltage rail and a first drive node. A feedback stage is coupled to a first tank output of the first tank circuit and to the first drive node. The feedback stage is arranged to generate, responsive to a first oscillating tank voltage present at the first tank output, a first oscillating drive voltage at the first drive node in-phase with a first oscillating tank current flowing in the inductive element and the capacitive element, thereby causing the oscillator to oscillate in a series resonance mode of the inductive element and the capacitive element.Type: GrantFiled: April 17, 2014Date of Patent: September 5, 2017Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: Pietro Andreani, Luca Fanori, Thomas Mattsson
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Patent number: 9543978Abstract: A frequency selective circuit configured to convert an analog input signal to a digital output signal comprises an analog-to-digital converter (44) to generate the digital output signal of the circuit based on an analog input signal to the analog-to-digital converter (44); a digital-to-analog converter (46, 47) to generate an analog feedback signal based on the digital output signal from the analog-to-digital converter (44), and an analog filter arranged to generate the analog input signal to the analog-to-digital converter based on the analog feedback signal and an analog input signal to the circuit. The analog filter comprises at least two integrators (41, 42) in series, each having a feedback path comprising the analog-to-digital converter (44) in cascade with a digital-to-analog converter (46, 47), so that the overall noise transfer function of the circuit has at least two zeros in addition to zeros in the noise transfer function of the analog-to-digital converter.Type: GrantFiled: February 21, 2013Date of Patent: January 10, 2017Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Sven Mattisson, Martin Anderson, Pietro Andreani, Mattias Palm
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Publication number: 20160203903Abstract: An inductor layout comprising a first inductor and a second inductor. The first and second inductors are electrically and magnetically independent inductors concentrically arranged on an integrated circuit. At least one of the first and second inductors is a multi-loop inductor with a first axis of symmetry.Type: ApplicationFiled: February 11, 2016Publication date: July 14, 2016Inventors: Thomas Mattsson, Pietro Andreani
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Patent number: 9299764Abstract: An inductor layout (200, 300, 400) comprising a first inductor (210, 310, 410) and a second inductor (220, 320, 420). The first and second inductors (210, 310, 410; 220, 320, 420) are electrically and magnetically independent inductors concentrically arranged on an integrated circuit 800. At least one of the first and second inductors (210, 310, 410; 220, 320, 420) is a multi-loop inductor with a first axis (226a, 316a, 326a, 416a, 426a) of symmetry.Type: GrantFiled: April 2, 2013Date of Patent: March 29, 2016Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)Inventors: Thomas Mattsson, Pietro Andreani
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Publication number: 20160036460Abstract: A frequency selective circuit configured to convert an analog input signal to a digital output signal comprises an analog-to-digital converter (44) to generate the digital output signal of the circuit based on an analog input signal to the analog-to-digital converter (44); a digital-to-analog converter (46, 47) to generate an analog feedback signal based on the digital output signal from the analog-to-digital converter (44), and an analog filter arranged to generate the analog input signal to the analog-to-digital converter based on the analog feedback signal and an analog input signal to the circuit. The analog filter comprises at least two integrators (41, 42) in series, each having a feedback path comprising the analog-to-digital converter (44) in cascade with a digital-to-analog converter (46, 47), so that the overall noise transfer function of the circuit has at least two zeros in addition to zeros in the noise transfer function of the analog-to-digital converter.Type: ApplicationFiled: February 21, 2013Publication date: February 4, 2016Inventors: Sven Mattisson, Martin Anderson, Pietro Andreani, Mattias Palm
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Publication number: 20150381157Abstract: An oscillator circuit comprises a first tank circuit comprising an inductive element and a capacitive element coupled in series between a first voltage rail and a first drive node. A feedback stage is coupled to a first tank output of the first tank circuit and to the first drive node. The feedback stage is arranged to generate, responsive to a first oscillating tank voltage present at the first tank output, a first oscillating drive voltage at the first drive node in-phase with a first oscillating tank current flowing in the inductive element and the capacitive element, thereby causing the oscillator to oscillate in a series resonance mode of the inductive element and the capacitive element.Type: ApplicationFiled: April 17, 2014Publication date: December 31, 2015Inventors: Pietro Andreani, Luca Fanori, Thomas Mattsson
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Publication number: 20150065068Abstract: An inductor layout (200, 300, 400) comprising a first inductor (210, 310, 410) and a second inductor (220, 320, 420). The first and second inductors (210, 310, 410; 220, 320, 420) are electrically and magnetically independent inductors concentrically arranged on an integrated circuit 800. At least one of the first and second inductors (210, 310, 410; 220, 320, 420) is a multi-loop inductor with a first axis (226a, 316a, 326a, 416a, 426a) of symmetry.Type: ApplicationFiled: April 2, 2013Publication date: March 5, 2015Applicant: Ericsson Modems SAInventors: Thomas Mattsson, Pietro Andreani
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Publication number: 20120252374Abstract: The present disclosure generally relates to the field of receiver structures in radio communication systems and more specifically to passive mixers in the receiver structure and to a technique for converting a first signal having a first frequency into a second signal having a second frequency by using a third signal having a third frequency.Type: ApplicationFiled: October 23, 2009Publication date: October 4, 2012Inventors: Sven Mattisson, Pietro Andreani, Daniele Mastantuono
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Publication number: 20040130399Abstract: A low noise amplifier comprises a CMOS transistor (M1) having gate, source and drain terminals, the gate terminal being connected via a first impedance matching network (Lg) to an input terminal of the amplifier, and the source terminal being connected via a second impedance matching network (Ls) to a signal ground connection, and a capacitive impedance (Cd) connected between the gate terminal and the source terminal of the transistor (M1).Type: ApplicationFiled: March 8, 2004Publication date: July 8, 2004Inventors: Pietro Andreani, Henrik Sjoland