Patents by Inventor Davide Guermandi
Davide Guermandi 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: 11817632Abstract: A circuit for optoelectronic down-conversion of a terahertz, THz, signal comprises a first photodiode and a second photodiode configured to be excited by an optical beat signal. The photodiodes are coupled in series through a common antenna. The terminals of the antenna are coupled to form an output terminal and the antenna is configured to receive the terahertz, THz, signal. The photodiodes thereby, via the optical beat signal, respectively, down-convert the THz signal and generate a current comprising an intermediate frequency, IF, component and a direct current, DC, component. The respective generated currents are summed at the output terminal, thereby obtaining the IF components and cancelling the DC components.Type: GrantFiled: September 3, 2021Date of Patent: November 14, 2023Assignees: Imec vzw, Stichting IMEC NederlandInventors: Peter Offermans, Davide Guermandi, Ashwyn Srinivasan
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Patent number: 11552596Abstract: An odd harmonic generation device is provided. The odd harmonic generation device includes an even harmonic generation unit and a mixer. In this context, the even harmonic generation unit is configured to generate two even harmonic signals on the basis of a fundamental signal. In addition to this, the mixer is configured to mix the fundamental signal with the two even harmonic signals to generate a desired odd harmonic signal.Type: GrantFiled: May 24, 2021Date of Patent: January 10, 2023Assignees: IMEC VZW, VRIJE UNIVERSITEIT BRUSSELInventors: Sehoon Park, Jan Craninckx, Pierre Wambacq, Davide Guermandi
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Patent number: 11536990Abstract: Examples include a driver circuit for driving a voltage controlled electro-optical modulator. The driver circuit includes a supply input and an input for receiving the input voltage. The driving circuit further includes a level shifter circuit, which includes first and second capacitors and is electrically connected to the input, and a voltage distribution circuit, which is electrically connected between the level shifter circuit and an output of the driver circuit for providing the output voltage. The level shifter circuit is configured to generate, based on the input voltage and using the first capacitor, a first voltage varying between the positive supply voltage level and a positive first level that is greater than the positive supply voltage level. The level shifter circuit is also configured to generate, based on the input voltage and using the second capacitor, a second voltage varying between ground and a negative second level.Type: GrantFiled: August 11, 2021Date of Patent: December 27, 2022Assignee: IMEC VZWInventor: Davide Guermandi
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Publication number: 20220077603Abstract: A circuit for optoelectronic down-conversion of a terahertz, THz, signal comprises a first photodiode and a second photodiode configured to be excited by an optical beat signal. The photodiodes are coupled in series through a common antenna. The terminals of the antenna are coupled to form an output terminal and the antenna is configured to receive the terahertz, THz, signal. The photodiodes thereby, via the optical beat signal, respectively, down-convert the THz signal and generate a current comprising an intermediate frequency, IF, component and a direct current, DC, component. The respective generated currents are summed at the output terminal, thereby obtaining the IF components and cancelling the DC components.Type: ApplicationFiled: September 3, 2021Publication date: March 10, 2022Inventors: Peter Offermans, Davide Guermandi, Ashwyn Srinivasan
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Publication number: 20220066243Abstract: Examples include a driver circuit for driving a voltage controlled electro-optical modulator. The driver circuit includes a supply input and an input for receiving the input voltage. The driving circuit further includes a level shifter circuit, which includes first and second capacitors and is electrically connected to the input, and a voltage distribution circuit, which is electrically connected between the level shifter circuit and an output of the driver circuit for providing the output voltage. The level shifter circuit is configured to generate, based on the input voltage and using the first capacitor, a first voltage varying between the positive supply voltage level and a positive first level that is greater than the positive supply voltage level. The level shifter circuit is also configured to generate, based on the input voltage and using the second capacitor, a second voltage varying between ground and a negative second level.Type: ApplicationFiled: August 11, 2021Publication date: March 3, 2022Inventor: Davide Guermandi
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Publication number: 20210399685Abstract: An odd harmonic generation device is provided. The odd harmonic generation device includes an even harmonic generation unit and a mixer. In this context, the even harmonic generation unit is configured to generate two even harmonic signals on the basis of a fundamental signal. In addition to this, the mixer is configured to mix the fundamental signal with the two even harmonic signals to generate a desired odd harmonic signal.Type: ApplicationFiled: May 24, 2021Publication date: December 23, 2021Inventors: Sehoon Park, Jan Craninckx, Pierre Wambacq, Davide Guermandi
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Patent number: 10530346Abstract: An aspect of the disclosure includes a comparator circuit comprising: a master latch comprising a first amplifier circuit and a first latch circuit coupled to an output of the first amplifier circuit; a slave latch comprising a second amplifier circuit having an input coupled to the output of the first amplifier circuit, and a second latch circuit coupled to an output of the second amplifier circuit; and a hysteresis compensation circuit coupled to the output of the second amplifier circuit and configured to cause a first predetermined signal level shift of an output signal of the first amplifier circuit in response to a high signal level at the output of the second amplifier circuit, and configured to cause a second predetermined signal level shift of an output signal of the first amplifier circuit in response to a low signal level at the output of the second amplifier circuit.Type: GrantFiled: April 25, 2019Date of Patent: January 7, 2020Assignees: IMEC VZW, VRIJE UNIVERSITEIT BRUSSELInventors: Oscar Elisio Mattia, Davide Guermandi
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Publication number: 20190334510Abstract: An aspect of the disclosure includes a comparator circuit comprising: a master latch comprising a first amplifier circuit and a first latch circuit coupled to an output of the first amplifier circuit; a slave latch comprising a second amplifier circuit having an input coupled to the output of the first amplifier circuit, and a second latch circuit coupled to an output of the second amplifier circuit; and a hysteresis compensation circuit coupled to the output of the second amplifier circuit and configured to cause a first predetermined signal level shift of an output signal of the first amplifier circuit in response to a high signal level at the output of the second amplifier circuit, and configured to cause a second predetermined signal level shift of an output signal of the first amplifier circuit in response to a low signal level at the output of the second amplifier circuit.Type: ApplicationFiled: April 25, 2019Publication date: October 31, 2019Inventors: Oscar Elisio Mattia, Davide Guermandi
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Patent number: 10230359Abstract: According to a first aspect of the present inventive concept there is provided an equalizer system comprising a decision feedback equalizer (DFE), the DFE comprising: a static comparator configured as a decision device of the DFE; and a feedback path comprising a set of filter taps including at least a first filter tap; wherein the static comparator presents hysteresis and wherein a tap coefficient of the first filter tap is set such that an input signal level of the static comparator is shifted to compensate for the hysteresis.Type: GrantFiled: April 27, 2018Date of Patent: March 12, 2019Assignee: IMEC VZWInventors: Oscar Elisio Mattia, Davide Guermandi
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Patent number: 9461679Abstract: A device includes circuitry configured to receive a signal burst, apply one or more filters to the signal burst based to achieve a predetermined image rejection rate, apply at least one harmonic rejection mode to the signal burst, and amplify the signal burst based on a gain partitioning determination.Type: GrantFiled: April 16, 2015Date of Patent: October 4, 2016Assignee: BROADCOM CORPORATIONInventors: Davide Guermandi, Silvian Spiridon, Dongsoo Daniel Koh, Stefano Bozzola, Han Yan, Mattia Introini, Tao Wu
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Patent number: 9379798Abstract: The present disclosure relates to a modulation circuit and a method for suppressing energy content of spectral side lobes caused by high-frequency content present in a baseband signal, with the energy content of the spectral side lobes being outside an intended operational bandwidth in a modulated radio-frequency signal. An example circuit is configured to: receive a digital baseband signal, feed the digital baseband signal to a first and a second signal path, with the first signal path comprising a first mixer and the second signal path comprising a delay circuit and a second mixer. The first mixer and the second mixer may receive a same local oscillator signal, and may respectively provide a first radio-frequency signal and a second radio-frequency signal that are delayed with respect to each other. The example circuit is further configured to generate an output radio-frequency signal by combining the first and second radio-frequency signals.Type: GrantFiled: February 6, 2015Date of Patent: June 28, 2016Assignee: IMEC VZWInventors: Davide Guermandi, Vito Giannini, Wim Van Thillo, André Bourdoux
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Publication number: 20150303954Abstract: A device includes circuitry configured to receive a signal burst, apply one or more filters to the signal burst based to achieve a predetermined image rejection rate, apply at least one harmonic rejection mode to the signal burst, and amplify the signal burst based on a gain partitioning determination.Type: ApplicationFiled: April 16, 2015Publication date: October 22, 2015Applicant: BROADCOM CORPORATIONInventors: Davide Guermandi, Silvian Spiridon, Dongsoo Daniel Koh, Stefano Bozzola, Han Yan, Mattia Introini, Tao Wu
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Publication number: 20150222344Abstract: The present disclosure relates to a modulation circuit and a method for suppressing energy content of spectral side lobes caused by high-frequency content present in a baseband signal, with the energy content of the spectral side lobes being outside an intended operational bandwidth in a modulated radio-frequency signal. An example circuit is configured to: receive a digital baseband signal, feed the digital baseband signal to a first and a second signal path, with the first signal path comprising a first mixer and the second signal path comprising a delay circuit and a second mixer. The first mixer and the second mixer may receive a same local oscillator signal, and may respectively provide a first radio-frequency signal and a second radio-frequency signal that are delayed with respect to each other. The example circuit is further configured to generate an output radio-frequency signal by combining the first and second radio-frequency signals.Type: ApplicationFiled: February 6, 2015Publication date: August 6, 2015Applicant: IMEC VZWInventors: Davide Guermandi, Vito Giannini, Wim Van Thillo, André Bourdoux