Patents Assigned to GenXComm, Inc.
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Patent number: 11838056Abstract: A signal generator includes a photonic circuit configured to output a sequence of solitons at a known rate. The solitons illuminate a high-speed photodiode that, in response, generates an electrical signal, such as a sinusoidal signal, which can be provided as input to a direct digital synthesizer configured to output successive phases of a selected waveform in response to electrical stimulus.Type: GrantFiled: May 5, 2022Date of Patent: December 5, 2023Assignee: GenXComm, Inc.Inventors: Farzad Mokhtari-Koushyar, Thien-An Nguyen, Taran Huffman, Brian Mattis
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Patent number: 11796737Abstract: A method of co-manufacturing silicon waveguides, SiN waveguides, and semiconductor structures in a photonic integrated circuit. A silicon waveguide structure can be formed using a suitable process, after which it is buried in a cladding. The cladding is polished, and a silicon nitride layer is disposed to define a silicon nitride waveguide. The silicon nitride waveguide is buried in a cladding, and annealed. Thereafter, cladding above the silicon waveguide structure can be trenched through, and low-temperature operations can be performed to or with an exposed surface of the silicon waveguide structure.Type: GrantFiled: February 17, 2021Date of Patent: October 24, 2023Assignee: GenXComm, Inc.Inventors: Brian Mattis, Taran Huffman, Bryan Woo, Thien-An Nguyen
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Patent number: 11539394Abstract: A system and method for mitigating self-interference in mmWave systems. A transceiver can include a mutual precoder controller that controls both an analog/RF beamforming circuit and a digital/BB beamforming circuit to prefer beams directed along paths in the local RF environment that minimize self-interference. In other cases, a transceiver can include one or more self-interference filters to internally mitigate self-interference.Type: GrantFiled: October 23, 2020Date of Patent: December 27, 2022Assignee: GENXCOMM, INC.Inventors: Ian P. Roberts, Hardik B. Jain, Sriram Vishwanath, Yitao Chen, Rajesh K. Mishra, Dan Schwartz
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Patent number: 11469821Abstract: Methods and apparatus for interference cancelation in a radio frequency communications device are described. In various embodiments a signal to be transmitted in converted into an optical signal and processed using an optical filter assembly including one or more optical filters to generate an optical interference cancelation signal. The optical interference cancelation signal is converted into an analog radio frequency interference cancelation signal using an optical to electrical converter prior to the analog radio frequency interference cancelation signal being combined with a received signal to cancel interference, e.g., self interference. The optical filter assembly can include a large number of taps, e.g., 30, 50, 100 or more. Each tap may be implemented as a separate optical filter or series of optical filters. Delays and/or gain of the optical filters can be controlled dynamically based on channel estimates which may change due to changes in the environment and/or communications device position.Type: GrantFiled: June 7, 2021Date of Patent: October 11, 2022Assignee: GenXComm, Inc.Inventors: Hardik Jain, Sriram Vishwanath
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Patent number: 11330464Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well-suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such as base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancelation on RF (Radio Frequency) signals.Type: GrantFiled: December 21, 2020Date of Patent: May 10, 2022Assignee: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Patent number: 11309965Abstract: An optical filter comprises an array of waveguides fabricated on an optical integrated circuit (PIC). The array comprises individual waveguides, each of which receive light inputs, e.g., individual taps of a multi-tap optical filter used in an interference cancellation circuit. Typically, the output(s) of the individual waveguides are located at an exit (edge) of the PIC. At least one second waveguide in the array is patterned on the PIC in a converged configuration such that the light transiting these waveguides co-propagates and interacts across given portions of the respective waveguides before exiting the waveguide array along a common facet, thereby generating or inhibiting one of intermodulation products, and harmonics. This structural configuration enables the generation of various modes of transmission at the PIC exit, enabling more efficient transfer of the energy, e.g., to an associated photodetector (PD) that provides conversion of the energy to the RF domain.Type: GrantFiled: July 16, 2020Date of Patent: April 19, 2022Assignee: GenXComm, Inc.Inventors: Thien-An Nguyen, Monireh Moayedi Pour Fard, Farzad Mokhtari Koushyar, McKay Bradford, Ke Liu
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Patent number: 11215755Abstract: A mode converter formed by parallel tapered waveguides on a SiN platform. The waveguides form a trident structure comprising a main waveguide with an inverse taper structure, and a pair of waveguides on each side of the main waveguide. Each adjacent waveguide has a taper structure but one that is opposed to that of the main waveguide, namely, a width that gradually increases along the direction of light propagation to a larger value at an end tip thereof. The end tips of the waveguides terminate along a common input/output facet of the converter. The adjacent waveguides help to shape the mode of the light propagating through the main waveguide, in so doing enabling the converter to exhibit high coupling efficiency and polarization independence in the full optical communication bands (i.e., from O to L-band) by successfully tuning the mode shape at a chip facet. The trident mode converter enables efficient optical fiber-to-chip coupling.Type: GrantFiled: September 19, 2019Date of Patent: January 4, 2022Assignee: GenXComm, Inc.Inventors: Ke Liu, Thien-An Nguyen
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Patent number: 11150409Abstract: A dicing system and methods may include a novel way to separate die on a wafer in preparation for packaging that results in smooth diced edges. This is specifically advantageous, but not limited to, edge-coupled photonic chips. This method etches from the front side of the wafer and dices from the back side of the wafer to create a complete separation of die. It creates an optically smooth surface on the front side of the wafer at the location of the optical device (waveguides or other) which enables direct mounting of adjacent devices with low coupling loss and low optical scattering. The backside dicing may be wider than the front side etch, so as to recess this sawed surface and prevent it from protruding outward, resulting in rough surfaces inhibiting a direct joining of adjacent devices.Type: GrantFiled: May 8, 2019Date of Patent: October 19, 2021Assignee: GenXComm, Inc.Inventors: Brian Mattis, Taran Huffman, Jason Andrach, Hussein Nili, George Palmer
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Patent number: 11032005Abstract: Methods and apparatus for interference cancelation in a radio frequency communications device are described. In various embodiments a signal to be transmitted in converted into an optical signal and processed using an optical filter assembly including one or more optical filters to generate an optical interference cancelation signal. The optical interference cancelation signal is converted into an analog radio frequency interference cancelation signal using an optical to electrical converter prior to the analog radio frequency interference cancelation signal being combined with a received signal to cancel interference, e.g., self interference. The optical filter assembly can include a large number of taps, e.g., 30, 50, 100 or more. Each tap may be implemented as a separate optical filter or series of optical filters. Delays and/or gain of the optical filters can be controlled dynamically based on channel estimates which may change due to changes in the environment and/or communications device position.Type: GrantFiled: September 17, 2018Date of Patent: June 8, 2021Assignee: GenXComm, Inc.Inventors: Hardik Jain, Sriram Vishwanath
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Patent number: 11032737Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such a base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancelation on RF (Radio Frequency) signals.Type: GrantFiled: February 5, 2020Date of Patent: June 8, 2021Assignee: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Publication number: 20210088724Abstract: A mode converter formed by parallel tapered waveguides on a SiN platform. The waveguides form a trident structure comprising a main waveguide with an inverse taper structure, and a pair of waveguides on each side of the main waveguide. Each adjacent waveguide has a taper structure but one that is opposed to that of the main waveguide, namely, a width that gradually increases along the direction of light propagation to a larger value at an end tip thereof. The end tips of the waveguides terminate along a common input/output facet of the converter. The adjacent waveguides help to shape the mode of the light propagating through the main waveguide, in so doing enabling the converter to exhibit high coupling efficiency and polarization independence in the full optical communication bands (i.e., from O to L-band) by successfully tuning the mode shape at a chip facet. The trident mode converter enables efficient optical fiber-to-chip coupling.Type: ApplicationFiled: September 19, 2019Publication date: March 25, 2021Applicant: GenXComm, Inc.Inventors: Ke Liu, Thien-An Nguyen
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Patent number: 10873877Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such a base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancellation on RF (Radio Frequency) signals.Type: GrantFiled: April 23, 2019Date of Patent: December 22, 2020Assignee: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Patent number: 10727945Abstract: An optical filter comprises an array of waveguides fabricated on an optical integrated circuit (PIC). The array comprises individual waveguides, each of which receive light inputs, e.g., individual taps of a multi-tap optical filter used in an interference cancellation circuit. Each individual waveguide comprises an inlet, and an outlet. Typically, the output(s) of the individual waveguides are located at an exit (edge) of the PIC. In one embodiment, at least one second waveguide in the array is patterned on the PIC in a converged configuration such that, relative to a first waveguide, the light transiting these waveguides co-propagates and interacts across given portions of the respective waveguides before exiting the waveguide array along a common facet, thereby generating or inhibiting one of: intermodulation products, and harmonics. This structural configuration enables the generation of various modes of transmission at the PIC exit, enabling more efficient transfer of the energy, e.g.Type: GrantFiled: July 15, 2019Date of Patent: July 28, 2020Assignee: GenXComm, Inc.Inventors: Thien-An Nguyen, Monireh Moayedi Pour Fard, Farzad Mokhtari Koushyar, McKay Bradford, Ke Liu
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Publication number: 20200229031Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such a base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancelation on RF (Radio Frequency) signals.Type: ApplicationFiled: February 5, 2020Publication date: July 16, 2020Applicant: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Patent number: 10321357Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such a base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancelation on RF (Radio Frequency) signals.Type: GrantFiled: July 23, 2018Date of Patent: June 11, 2019Assignee: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Patent number: 10257746Abstract: Methods and apparatus for reducing and/or canceling signal interference between receiver and transmitter components of a wireless communications device are described. The methods and apparatus are well suited for use in a wide range of devices including user equipment devices such as cell phones as well as in network equipment such a base stations. Opto-mechanical devices are used in some embodiments as part of an apparatus which performs interference cancelation on RF (Radio Frequency) signals.Type: GrantFiled: June 14, 2017Date of Patent: April 9, 2019Assignee: GenXComm, Inc.Inventors: Hardik Jain, Che-Chun Lin
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Patent number: 10110306Abstract: Methods and apparatus for interference cancelation in a radio frequency communications device are described. In various embodiments a signal to be transmitted in converted into an optical signal and processed using an optical filter assembly including one or more optical filters to generate an optical interference cancelation signal. The optical interference cancelation signal is converted into an analog radio frequency interference cancelation signal using an optical to electrical converter prior to the analog radio frequency interference cancelation signal being combined with a received signal to cancel interference, e.g., self interference. The optical filter assembly can include a large number of taps, e.g., 30, 50, 100 or more. Each tap may be implemented as a separate optical filter or series of optical filters. Delays and/or gain of the optical filters can be controlled dynamically based on channel estimates which may change due to changes in the environment and/or communications device position.Type: GrantFiled: December 13, 2016Date of Patent: October 23, 2018Assignee: GenXComm, Inc.Inventors: Hardik Jain, Sriram Vishwanath