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公开(公告)号：US20240305321A1
公开(公告)日：2024-09-12
申请号：US18668397
申请日：2024-05-20
发明人： Karthik SUBBURAJ , Pranav SINHA , Mayank Kumar SINGH , Rittu SACHDEV , Karan Singh BHATIA , Shailesh JOSHI , Indu PRATHAPAN
CPC分类号： H04B1/0075 , H04B1/04 , H04B1/1036 , H04B1/69 , H04B2001/0408 , H04B2001/1045 , H04B2001/1063 , H04B2001/6912
摘要： In a radar system, an intermediate frequency amplifier (IFA) is configured with two high-pass filter stages, each having an amplifier and a configurable impedance component. A control signal is activated as the radar system begins to transmit a chirp signal to lower the impedance of the configurable impedance components during an initial portion of the chirp transmission to achieve faster settling of the IFA output signal. After the initial portion, the control signal deactivates while transmission of the chirp continues to increase the impedance of the configurable impedance components to a level sufficient to effectively perform filtering of unwanted signals received by the radar system.
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公开(公告)号：US12057874B2
公开(公告)日：2024-08-06
申请号：US18271519
申请日：2022-01-14
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04B2001/1045 , H04B2001/1072
摘要： A device for reducing noise in a radio signal received in the FM band is proposed, including: a module for demodulating the radio signal, adapted to generate a demodulated radio signal on the basis of the received radio signal; a noise suppression module adapted to replace a temporal sequence of the demodulated radio signal with a denoised sequence; a module for controlling the noise suppression module, adapted to control the activation of the noise suppression module. The noise reduction device further including a module for analyzing the frequency spectrum of the received radio signal. The control module is configured to control the noise suppression module according to an activation strategy chosen from among several predetermined activation strategies depending on the spectral content of the received radio signal.
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公开(公告)号：US12057872B2
公开(公告)日：2024-08-06
申请号：US17877455
申请日：2022-07-29
IPC分类号： H04B1/10 , H04W72/0453 , H04W88/06
CPC分类号： H04B1/10 , H04W72/0453 , H04B2001/1045 , H04B2001/1054 , H04W88/06
摘要： A master node (MN) communicating with a UE using resource of a first band of unlicensed spectrum sends an addition request to a selected secondary node, to request resources for supporting the UE in a second band of unlicensed spectrum. The addition request includes minimum frequency separation information and optionally a baseline reference frequency. The minimum frequency separation information communicated in the addition request, indicates a minimum amount of frequency separation to be maintained between the communication resources in the first band of unlicensed spectrum used for communications with the UE and communication resource in the second band of unlicensed spectrum to be used for communications with the UE. The secondary node selects a channel within the second band of unlicensed spectrum to use for communications with the UE, which will satisfy the minimum frequency separation requirement communicated in the addition request and avoid IDC problems for the UE.
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公开(公告)号：US11990927B2
公开(公告)日：2024-05-21
申请号：US17608640
申请日：2020-03-03
发明人： Ni Huang , Dawu He , Cunhao Gao , Guangbin Huang , Yongdong Wang
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04B2001/1045
摘要： Disclosed in the present application are a method for improving performance of a low-intermediate frequency receiver, a storage medium, and a receiver. The method comprises: selecting a local oscillator signal from a preset local oscillator frequency set as an initial local oscillator signal to perform frequency mixing processing on an input signal, so as to obtain a low-intermediate frequency signal comprising a low-intermediate frequency useful signal and a low-intermediate frequency interference signal; determining whether an energy ratio of the low-intermediate frequency interference signal to the low-intermediate frequency useful signal is greater than a first preset ratio; and if the energy ratio is greater than the first preset ratio, selecting another local oscillator frequency from the preset local oscillator frequency set as the current local oscillator signal to process the input signal. In this way, the present application can improve the adjacent channel selectivity of a low-intermediate frequency receiver.
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公开(公告)号：US20240039566A1
公开(公告)日：2024-02-01
申请号：US18271519
申请日：2022-01-14
IPC分类号： H04B1/10
CPC分类号： H04B1/1027 , H04B2001/1072 , H04B2001/1045
摘要： A device for reducing noise in a radio signal received in the FM band is proposed, including: a module for demodulating the radio signal, adapted to generate a demodulated radio signal on the basis of the received radio signal; a noise suppression module adapted to replace a temporal sequence of the demodulated radio signal with a denoised sequence; a module for controlling the noise suppression module, adapted to control the activation of the noise suppression module. The noise reduction device further including a module for analyzing the frequency spectrum of the received radio signal. The control module is configured to control the noise suppression module according to an activation strategy chosen from among several predetermined activation strategies depending on the spectral content of the received radio signal.
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公开(公告)号：US20230378994A1
公开(公告)日：2023-11-23
申请号：US18230505
申请日：2023-08-04
申请人： Kumu Networks, Inc.
发明人： Jung-il Choi , Mayank Jain , Wilhelm Steffen Hahn , Alfred Riddle
CPC分类号： H04B1/50 , H04B1/1027 , H04B1/525 , H04B1/0067 , H04B2001/1045 , H04B1/0057
摘要： 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.
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公开(公告)号：US20230353176A1
公开(公告)日：2023-11-02
申请号：US18344338
申请日：2023-06-29
发明人： Anand Raghavan
IPC分类号： H04B1/10 , H04B1/3827 , H04B1/62 , H04B17/391 , H04B1/04
CPC分类号： H04B1/1027 , H04B1/3833 , H04B1/62 , H04B17/391 , H04B1/04 , H04B2001/0425 , H04B2001/1045
摘要： Radio frequency (RF) communication systems with coexistence management are provided herein. In certain embodiments, a method of coexistence management includes generating an RF observation signal based on observing a cellular transmit signal using a cellular front end system, processing the RF observation signal to generate digital observation data using a cellular transceiver, generating a digital wireless local area network (WLAN) receive signal based on processing an RF WLAN receive signal using a WLAN transceiver, compensating the digital baseband WLAN receive signal for RF signal leakage based on the digital observation data using a discrete time cancellation circuit of the WLAN transceiver.
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8.发明授权公开(公告)号：US11770147B2
公开(公告)日：2023-09-26
申请号：US17405116
申请日：2021-08-18
发明人： Amr Abdelmonem
IPC分类号： H04W24/00 , H04B1/10 , H04L43/16 , H04W24/06 , H04W28/04 , H04J11/00 , H04L5/00 , H04B1/7097 , H04L41/0823 , H04L43/0829 , H04L43/50 , H04L1/00 , H04L1/24 , H04W24/02 , H04W72/29 , H04W72/51 , H04W72/541 , H04W72/542 , H04B17/309 , H04W16/32 , H04B17/345 , H04W28/02 , H04W72/044 , H04W36/08 , H04W36/20 , H04W52/24 , H04W72/0453 , H04B17/336 , H04W24/08 , H04L45/00 , H04W40/12 , H04W88/08 , H04W92/20 , H04J13/00 , H04W24/10 , H04B10/25 , H04L69/323 , H04L41/12 , H04L43/0852 , H04L45/28 , H04W40/02
CPC分类号： H04B1/1036 , H04B1/7097 , H04B17/309 , H04B17/336 , H04B17/345 , H04J11/005 , H04J11/0023 , H04J11/0056 , H04L1/0021 , H04L1/0026 , H04L1/242 , H04L5/0073 , H04L41/0823 , H04L43/0829 , H04L43/16 , H04L43/50 , H04L45/22 , H04W16/32 , H04W24/02 , H04W24/06 , H04W24/08 , H04W28/0236 , H04W28/04 , H04W36/08 , H04W36/20 , H04W40/12 , H04W52/241 , H04W72/044 , H04W72/0453 , H04W72/29 , H04W72/51 , H04W72/541 , H04W72/542 , H04B10/25 , H04B2001/1045 , H04B2001/1054 , H04B2001/1072 , H04B2201/70728 , H04J13/00 , H04L5/001 , H04L5/006 , H04L5/0053 , H04L5/0082 , H04L41/12 , H04L43/0852 , H04L45/28 , H04L69/323 , H04W24/10 , H04W40/02 , H04W88/08 , H04W88/085 , H04W92/20 , Y02D30/70
摘要： A system that incorporates aspects of the subject disclosure may perform operations including, for example, obtaining uplink information associated with a plurality of communication devices transmitting wireless signals on a plurality of uplink paths, performing, based on the uplink information, a plurality of measurements of the plurality of uplink paths, identifying a measurement from the plurality of measurements that is below a threshold, and initiating a corrective action to improve a measurement of an affected uplink path of the plurality of uplink paths based on the identifying. Other embodiments are disclosed.
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公开(公告)号：US11764825B2
公开(公告)日：2023-09-19
申请号：US17972414
申请日：2022-10-24
申请人： Kumu Networks, Inc.
发明人： Jung-il Choi , Mayank Jain , Wilhelm Steffen Hahn , Alfred Riddle
CPC分类号： H04B1/50 , H04B1/0067 , H04B1/1027 , H04B1/525 , H04B1/0057 , H04B2001/1045
摘要： 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.
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公开(公告)号：US11750274B2
公开(公告)日：2023-09-05
申请号：US17449584
申请日：2021-09-30
申请人： Deere & Company
发明人： Wei Yu , Mark P. Kaplan , Richard G. Keegan , David M. Li
CPC分类号： H04B7/18513 , H04B1/1036 , H04B1/7101 , H04B2001/1045 , H04B2001/1063
摘要： A controller is configured to control the adaptive notch filter and to execute a search technique (e.g., artificial intelligence (AI) search technique) to converge on filter coefficients and to recursively adjust the filter coefficients of the adaptive notch filter in real time to adaptively adjust one or more filter characteristics (e.g., maximum notch depth or attenuation, bandwidth of notch, or general magnitude versus frequency response of notch).
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