Patents by Inventor Wilhelm Steffen Hahn

Wilhelm Steffen Hahn 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).

  • Patent number: 10447228
    Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: October 15, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10425115
    Abstract: A system for self-interference cancellation includes a frequency downconverter that decomposes a sampled RF transmit signal into an in-phase transmit signal and a quadrature transmit signal; a first analog vector modulator that scales the transmit signals to generate first scaled transmit signals; a second analog vector modulator that scales delayed transmit signals to generate second scaled transmit signals; a frequency upconverter that recomposes the scaled transmit signals into an RF self-interference cancellation signal; and a receive coupler that that combines the RF self-interference cancellation signal with a RF receive signal to reduce self-interference.
    Type: Grant
    Filed: February 27, 2019
    Date of Patent: September 24, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi, Dai Sieh, Jung-Il Choi, Mayank Jain
  • Publication number: 20190268029
    Abstract: A system for self-interference cancellation includes a frequency downconverter that decomposes a sampled RF transmit signal into an in-phase transmit signal and a quadrature transmit signal; a first analog vector modulator that scales the transmit signals to generate first scaled transmit signals; a second analog vector modulator that scales delayed transmit signals to generate second scaled transmit signals; a frequency upconverter that recomposes the scaled transmit signals into an RF self-interference cancellation signal; and a receive coupler that that combines the RF self-interference cancellation signal with a RF receive signal to reduce self-interference.
    Type: Application
    Filed: February 27, 2019
    Publication date: August 29, 2019
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi, Dai Sieh, Jung-Il Choi, Mayank Jain
  • Patent number: 10382085
    Abstract: A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: August 13, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Jung-Il Choi, Wilhelm Steffen Hahn, Mayank Jain
  • Publication number: 20190158193
    Abstract: A system for enhancing isolation in coexisting time-division duplexed (TDD) transceivers includes: a blocker canceller that transforms a transmit signal of a TDD transceiver into a blocker cancellation signal configured to remove transmit-band interference in a receive signal; a first filter that filters the blocker cancellation signal; a second filter that filters the transmit signal; and a transmit-noise canceller that transforms the filtered transmit signal into a transmit noise cancellation signal configured to remove receive-band interference in the receive signal.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 23, 2019
    Inventors: Mayank Jain, Wilhelm Steffen Hahn, Jung-II Choi, Jeffrey Mehlman
  • Publication number: 20190149186
    Abstract: A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.
    Type: Application
    Filed: December 21, 2018
    Publication date: May 16, 2019
    Inventors: Jung-Il Choi, Wilhelm Steffen Hahn, Mayank Jain
  • Publication number: 20190115900
    Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.
    Type: Application
    Filed: December 10, 2018
    Publication date: April 18, 2019
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10243598
    Abstract: A system for integrated self-interference cancellation, comprising a transmit coupler, coupled to a transmit signal, that samples the transmit signal to create a sampled transmit signal; an analog self-interference canceller, coupled to the transmit coupler, comprising a controller; a signal divider, that splits the sampled transmit signal into a set of signal components; a set of phase shifters, wherein a phase shifter of the set shifts a signal component of the set of signal components by a total phase shift value; a set of scalers, wherein a scaler of the set scales the signal component by a total scale factor; a signal combiner, that combines the set of signal components into a self-interference cancellation signal; and a receive coupler, coupled to a receive signal, that combines the self-interference cancellation signal with the receive signal to remove a portion of self-interference present in the receive signal.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: March 26, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10230422
    Abstract: A system for frequency isolation modified self-interference cancellation includes a transmit coupler, that samples an RF transmit signal; an RF self-interference canceller that transforms the sampled RF transmit signal to an RF self-interference cancellation signal; a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal to form a reduced-interference receive signal; and a frequency shifter that frequency shifts only one of the RF transmit signal and the reduced-interference receive signal.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: March 12, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Dinesh Bharadia, Jeffrey Mehlman, Wilhelm Steffen Hahn
  • Publication number: 20190044567
    Abstract: A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventors: Jung-Il Choi, Wilhelm Steffen Hahn, Mayank Jain
  • Patent number: 10200076
    Abstract: A system for wired analog self-interference cancellation includes a coarse delayer that delays a sampled RF transmit signal by a first delay amount; a frequency downconverter that downconverts the sampled RF transmit signal to IF; a first canceller tap group comprising a first per-tap-group delayer, a first sampling coupler, a first per-tap delayer, and first and second analog vector modulators that generates an IF self-interference cancellation signal; a frequency upconverter that upconverts the IF self-interference cancellation signal to RF; and a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal, reducing self-interference.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: February 5, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Jung-Il Choi, Wilhelm Steffen Hahn, Mayank Jain
  • Patent number: 10187030
    Abstract: A multilayer fringe capacitor includes first and second interdigitated capacitor electrodes, both parallel to and intersecting a first planar surface; third and fourth interdigitated capacitor electrodes, the first and second electrodes parallel to and separated by a non-zero distance from the third and fourth electrodes; a first set of coupling vias that electrically couples the first electrode to the third electrode; and a second set of coupling vias that electrically couples the second electrode to the fourth electrode.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: January 22, 2019
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Publication number: 20180262177
    Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; and a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs.
    Type: Application
    Filed: May 10, 2018
    Publication date: September 13, 2018
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10050664
    Abstract: A system for enhanced linearity mixing includes an input-source signal coupler; a local oscillator (LO) signal coupler; a primary mixer that combines, via heterodyning, the primary-mixer-input signal and the primary-mixer-LO signal to generate a primary-mixer-output signal; a distortion-source mixer that combines, via heterodyning, the distortion-mixer-input signal and the distortion-mixer-LO signal to generate a distortion-mixer-output signal; and an output signal coupler that combines the primary-mixer-output signal and the distortion-mixer-output signal to generate an output signal with reduced non-linearity.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: August 14, 2018
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 10050597
    Abstract: A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: August 14, 2018
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Patent number: 9979374
    Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs; and an interposer circuit block that electrically couples the second input to the first pass-through and the second output to the second pass-through.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: May 22, 2018
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Publication number: 20170353212
    Abstract: A system for frequency isolation modified self-interference cancellation includes a transmit coupler, that samples an RF transmit signal; an RF self-interference canceller that transforms the sampled RF transmit signal to an RF self-interference cancellation signal; a receive coupler that combines the RF self-interference cancellation signal with the RF receive signal to form a reduced-interference receive signal; and a frequency shifter that frequency shifts only one of the RF transmit signal and the reduced-interference receive signal.
    Type: Application
    Filed: August 24, 2017
    Publication date: December 7, 2017
    Inventors: Dinesh Bharadia, Jeffrey Mehlman, Wilhelm Steffen Hahn
  • Patent number: 9819325
    Abstract: A time delay filter comprising a substrate comprising a first surface and a second surface opposite the first surface; a first LC resonator coupled to the substrate and comprising a first coupling point, a first capacitive element electrically coupled between the first coupling point and the first conductive region, and a first inductive element coupled between the first coupling point and the first conductive region, and comprising a first and second inductor tap; and a second LC resonator coupled to the substrate and comprising a second coupling point, a second capacitive element electrically coupled between the second coupling point and the first conductive region, and a second inductive element electrically coupled between the second coupling point and the first conductive region wherein the system group delays a signal output at a second coupling point relative to a signal input at the first coupling point.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 14, 2017
    Assignee: Kumu Networks, Inc.
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Publication number: 20170317657
    Abstract: A time delay filter comprising a substrate; four coupled LC resonators, each having a coupling point; a first capacitor that electrically couples the first coupling point to the second coupling point; a second capacitor that electrically couples the second coupling point to the third coupling point; and a third capacitor that electrically couples the third coupling point to the fourth coupling point; the filter group delaying a signal output at the fourth coupling point relative to a signal input at the first coupling point.
    Type: Application
    Filed: July 18, 2017
    Publication date: November 2, 2017
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi
  • Publication number: 20170310295
    Abstract: An analog time delay filter circuit including a first delay circuit block arranged in a modular layout, having a first time delay filter, a first input, a first output, and first and second pass-throughs; a second delay circuit block arranged in the same modular layout, having a second time delay filter, a second input, a second output, and third and fourth pass-throughs; and an interposer circuit block that electrically couples the second input to the first pass-through and the second output to the second pass-through.
    Type: Application
    Filed: April 25, 2017
    Publication date: October 26, 2017
    Inventors: Wilhelm Steffen Hahn, Alfred Riddle, Ernie Landi