公开(公告)号：US20230378994A1

公开(公告)日：2023-11-23

申请号：US18230505

申请日：2023-08-04

Applicant: Kumu Networks, Inc.

Inventor： Jung-il Choi ,  Mayank Jain ,  Wilhelm Steffen Hahn ,  Alfred Riddle

IPC: H04B1/50 ,  H04B1/10 ,  H04B1/525 ,  H04B1/00

CPC classification number: H04B1/50 ,  H04B1/1027 ,  H04B1/525 ,  H04B1/0067 ,  H04B2001/1045 ,  H04B1/0057

Abstract: A system for interference mitigation includes: a transmit coupler; a receive coupler; a duplexer; and an interference cancellation module that includes a receive-band filter, a transmit-band filter, and an interference cancellation system.

公开(公告)号：US11764825B2

公开(公告)日：2023-09-19

申请号：US17972414

申请日：2022-10-24

Applicant: Kumu Networks, Inc.

Inventor： Jung-il Choi ,  Mayank Jain ,  Wilhelm Steffen Hahn ,  Alfred Riddle

IPC: H04B1/50 ,  H04B1/10 ,  H04B1/525 ,  H04B1/00

CPC classification number: H04B1/50 ,  H04B1/0067 ,  H04B1/1027 ,  H04B1/525 ,  H04B1/0057 ,  H04B2001/1045

Abstract: A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.

公开(公告)号：US11515906B2

公开(公告)日：2022-11-29

申请号：US17088438

申请日：2020-11-03

Applicant: Kumu Networks, Inc.

Inventor： Jung-il Choi ,  Mayank Jain ,  Wilhelm Steffen Hahn ,  Alfred Riddle

IPC: H04B1/50 ,  H04B1/10 ,  H04B1/525 ,  H04B1/00

Abstract: A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.

公开(公告)号：US20190181908A1

公开(公告)日：2019-06-13

申请号：US16248679

申请日：2019-01-15

Applicant: Kumu Networks, Inc.

Inventor： Jung-il Choi ,  Mayank Jain ,  Wihelm Steffen Hahn ,  Alfred Riddle

IPC: H04B1/50 ,  H04B1/00

Abstract: A system for interference mitigation includes: a first transmit coupler; a receive-band noise cancellation system; a first transmit-band filter; a second transmit coupler; a first receive coupler; a transmit-band noise cancellation system; a first receive-band filter; and a second receive coupler.

公开(公告)号：US20170317657A1

公开(公告)日：2017-11-02

申请号：US15652643

申请日：2017-07-18

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi

IPC: H03H7/32 ,  H03H7/01

CPC classification number: H03H7/32 ,  H01L2224/48195 ,  H03H7/0115 ,  H03H7/1708 ,  H03H7/1775 ,  H03H2001/0085

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.

公开(公告)号：US20170310295A1

公开(公告)日：2017-10-26

申请号：US15496948

申请日：2017-04-25

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi

IPC: H03H7/32 ,  H03H7/01

CPC classification number: H03H7/32 ,  H03H7/0115

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.

公开(公告)号：US10804943B2

公开(公告)日：2020-10-13

申请号：US16539759

申请日：2019-08-13

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi ,  Dai Sieh ,  Jung-Il Choi ,  Mayank Jain

IPC: H04B15/02 ,  H04B1/10 ,  H04L5/14 ,  H04B1/40

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.

公开(公告)号：US20200007304A1

公开(公告)日：2020-01-02

申请号：US16570272

申请日：2019-09-13

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi

IPC: H04L5/14 ,  H04B1/48

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.

公开(公告)号：US10447228B2

公开(公告)日：2019-10-15

申请号：US16215539

申请日：2018-12-10

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi

IPC: H01G4/00 ,  H03H7/32 ,  H01G4/232 ,  H03H7/01 ,  H01G4/38 ,  H01G11/82 ,  H01G4/30 ,  H01G4/012 ,  H01G4/228 ,  H03H7/09 ,  H01G4/005 ,  H01G9/008 ,  H01G4/018 ,  H01G4/002 ,  H01G4/01 ,  H03H1/00

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.

公开(公告)号：US10243598B2

公开(公告)日：2019-03-26

申请号：US15460993

申请日：2017-03-16

Applicant: Kumu Networks, Inc.

Inventor： Wilhelm Steffen Hahn ,  Alfred Riddle ,  Ernie Landi

IPC: H04L5/14 ,  H04B1/10 ,  H04B15/00 ,  H04B1/44 ,  H04B1/04

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.