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公开(公告)号：US20240348281A1
公开(公告)日：2024-10-17
申请号：US18754595
申请日：2024-06-26
发明人： David Richard Pehlke , Anand Raghavan , Poul Olesen , Werner Schelmbauer , Thorsten Tracht , Wolfgang Thomann , Amir Israel Rubin , Assi Jakoby , Ofer Benjamin
IPC分类号： H04B1/525 , H04B1/04 , H04B1/10 , H04B1/12 , H04B7/0413
CPC分类号： H04B1/525 , H04B1/0475 , H04B1/1027 , H04B1/123 , H04B7/0413
摘要： RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, a method of interference cancellation includes filtering a radio frequency (RF) transmit signal to generate a first RF feedback signal using a first filter of a front end system, filtering the RF transmit signal to generate a second RF feedback signal using a second filter of the front end system, processing the first RF feedback signal to generate a first digital interference cancellation signal using a first feedback receiver, processing the second RF feedback signal to generate a second digital interference cancellation signal using a second feedback receiver, and compensating an RF receive signal for interference based on the first digital interference cancellation signal and the second digital interference cancellation signal using a receiver.
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2.发明公开公开(公告)号：US20240297680A1
公开(公告)日：2024-09-05
申请号：US18270727
申请日：2022-01-24
发明人： Zijie Hu , Senhang He , Xu Tian , Jianxing Ni
摘要： In order to solve the problem that signals often interfere with one another in the RF front-end module in the prior art, the application provides an RF front-end module, an antenna device and a control method for the RF front-end module. The module comprises an antenna switch selection module, an RF signal transmitting link, a first RF signal receiving link and a second RF signal receiving link; the RF signal transmitting link, first RF signal receiving link and second RF signal receiving link are separately connected to a first inner peripheral port, second inner peripheral port and third inner peripheral port respectively. The antenna device and RF front-end module thereof improve the isolation effect. When the RF front-end circuit receives a plurality of RF signals at the same time, the isolation among different RF signals at the antenna switch selection module is higher than that in the prior art.
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3.发明公开公开(公告)号：US20240297679A1
公开(公告)日：2024-09-05
申请号：US18177843
申请日：2023-03-03
发明人： Thomas GEMMER , Nico RIEDMANN , Adam TANKIELUN , Hendrik BARTKO
摘要： A measurement system is provided. Said measurement system comprises a first measurement chain, a second measurement chain, a radio frequency hybrid coupler, a first radio frequency port connected to the first measurement chain via the radio frequency hybrid coupler, a second radio frequency port connected to the second measurement chain via the radio frequency hybrid coupler, a first attenuator or a first radio frequency switch for the first radio frequency port, and a second attenuator or a second radio frequency switch for the second radio frequency port. In this context, a first transmission coefficient of the first attenuator or the first radio frequency switch is controllable. In addition to this, a second transmission coefficient of the second attenuator or the second radio frequency switch is controllable.
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公开(公告)号：US20240283482A1
公开(公告)日：2024-08-22
申请号：US18570421
申请日：2021-06-14
发明人： Piotr Jedrzejewski , Rui Hou , David Scafe
CPC分类号： H04B1/525 , H04B1/0057
摘要： There is provided a filter unit for wideband multicarrier FDD operation. The filter unit comprises an MXT, at least one isolator, and a filter bank. The MXT and the filter bank are connected via the at least one isolator. The MXT is configured to receive a TX wideband multicarrier signal as provided by at least one PA, and to 5 provide a first BP filtered TX wideband multicarrier signal to the at least one isolator. The MXT comprises at least one first BP filter structure for first BP filtering of the TX wideband multicarrier signal. The at least one isolator is configured to receive the first BP filtered TX wideband multicarrier signal from the MXT and provide the first BP filtered TX wideband multicarrier signal to the filter bank. The filter bank is 10 configured to receive the first BP filtered TX wideband multicarrier signal from the at least one isolator, and to provide a second BP filtered TX wideband multicarrier signal towards an antenna port. The filter bank comprises at least one more second BP filter structure than there are first BP filter structures for second BP filtering of the first BP filtered TX wideband multicarrier signal to provide the second BP filtered 15 TX wideband multicarrier signal.
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公开(公告)号：US12057879B2
公开(公告)日：2024-08-06
申请号：US18339906
申请日：2023-06-22
发明人： David Richard Pehlke , Anand Raghavan , Poul Olesen , Werner Schelmbauer , Thorsten Tracht , Wolfgang Thomann , Amir Israel Rubin , Assi Jakoby , Ofer Benjamin
IPC分类号： H04B1/525 , H04B1/04 , H04B1/10 , H04B1/12 , H04B7/0413
CPC分类号： H04B1/525 , H04B1/0475 , H04B1/1027 , H04B1/123 , H04B7/0413
摘要： RF communication systems with interference cancellation for coexistence are provided herein. In certain embodiments, an RF communication system includes a transmitter that transmits a transmit signal through a first front end circuit, a receiver that processes a receive signal from a second front end circuit, and a feedback receiver that processes a feedback signal from the first front end circuit to generate a digital interference cancellation signal that compensates the receiver for interference arising from the transmitter.
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公开(公告)号：US12048005B2
公开(公告)日：2024-07-23
申请号：US17268212
申请日：2019-08-21
申请人： Apple Inc.
发明人： Salvatore Talarico , Lopamudra Kundu , Jeongho Jeon , Dae Won Lee
IPC分类号： H04W74/0816 , H04B1/525 , H04J13/00 , H04L5/00 , H04W72/0453 , H04W74/00
CPC分类号： H04W74/0816 , H04B1/525 , H04J13/0062 , H04L5/001 , H04L5/0098 , H04W72/0453 , H04W74/004
摘要： A network device (e.g., a user equipment (UE), a new radio NB (gNB), or other network component) can process or generate a dynamic indication that indicates a transmission bandwidth based on a wideband bandwidth. One or more downlink (DL) signals can be provided with the indication of the transmission bandwidth that enables a tuning of communications within the wideband bandwidth based on the indication for new radio (NR) communications in heterogeneous network domains ranging from Enhanced Mobile Broadband (eMBB) to massive Machine-Type Communications (mMTC) and Ultra-Reliable Low-Latency Communications (URLLC) or the like.
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7.发明授权公开(公告)号：US12047111B2
公开(公告)日：2024-07-23
申请号：US17859860
申请日：2022-07-07
申请人： Apple Inc.
发明人： Saihua Lin
CPC分类号： H04B1/48 , H04B1/006 , H04B1/0064 , H04B2001/485
摘要： Embodiments disclosed herein relate to reducing insertion loss in a transceiver while improving an operating efficiency of the transceiver. To do so, the transceiver may include isolation circuitry with harmonic distortion rejection circuitry, an electrostatic discharge filter, an out-of-band noise filter, and/or a matching network. In particular, the harmonic distortion rejection circuitry may enable a second harmonic signal to pass from a power amplifier of a transmitter of the transceiver to ground. The electrostatic discharge filter may also provide a path to ground for electrostatic discharge, and the out-of-band noise filter may provide a path to ground for noise signals. The isolation circuitry may substantially remove or decrease interference caused by undesirable signals while reducing a power consumption and thus improving an operating efficiency of the transceiver.
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公开(公告)号：US11923888B2
公开(公告)日：2024-03-05
申请号：US17509984
申请日：2021-10-25
发明人： Teyan Chen , Ju Cao , Tao Wu
摘要： Embodiments of this application disclose a full-duplex self-interference cancellation method and apparatus. The full-duplex self-interference cancellation method may be applied to the field of radio frequency self-interference cancellation in a full-duplex scenario. The full-duplex self-interference cancellation method is implemented by a full-duplex self-interference cancellation apparatus with self-interference reconstruction modules of two levels, and the full-duplex self-interference cancellation apparatus is implemented by a terminal. This greatly reduces hardware implementation complexity and costs of the second self-interference reconstruction module, and improves a full-duplex self-interference cancellation capability.
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公开(公告)号：US20240056120A1
公开(公告)日：2024-02-15
申请号：US17819329
申请日：2022-08-12
申请人： Intel Corporation
发明人： Sashank KRISHNAMURTHY , Ofir DEGANI , Ashoke RAVI
CPC分类号： H04B1/525 , H04B1/0078 , H04B1/30 , H04B2001/307
摘要： A tunable bandpass low-noise amplifier (LNA). The LNA includes a plurality of N-path filters and a plurality of cascode amplifiers. The cascode amplifiers are configured to amplify an input signal. Each N-path filter is coupled to a different one of the plurality of cascode amplifiers. The plurality of N-path filters are driven by local oscillator (LO) signals having different frequencies, and output nodes of the plurality of cascode amplifiers are coupled in parallel. The frequencies of the LO signals may be symmetrically spaced around a desired frequency (fLO). Each N-path filter may be coupled to a source of the common-gate device of the coupled cascode amplifier. The LO signals may be generated by a digital-to-time converter (DTC)-based frequency synthesizer. The frequencies of the LO signals supplied to the N-path filters may be adjusted to tune the bandwidth of the bandpass LNA.
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10.发明授权公开(公告)号：US11901931B2
公开(公告)日：2024-02-13
申请号：US17471095
申请日：2021-09-09
CPC分类号： H04B1/525 , H04B1/12 , H04B17/102
摘要： Methods, systems, and devices for wireless communications are described. A user equipment (UE) may filter leaked power from a signal to accurately perform antenna compensation operations (e.g., apply a transmit gain, perform cable loss measurements) using valid power. A switch at the UE may leak power to an antenna for a transmission, and the UE may use a dynamic filtering algorithm to determine whether a pulse power of a detected signal is leaked or valid. The dynamic filtering algorithm may be able to account for variations in leaked power values, as leaked power may increase or decrease proportionally to intended power (e.g., from which power was leaked). By determining whether pulse power is leaked or valid, the UE may be able to filter out the leaked power and accurately perform antenna compensation operations such as applying a transmit gain for a transmission, performing a cable loss measurement, or the like.
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