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公开(公告)号：US20240340027A1
公开(公告)日：2024-10-10
申请号：US18748506
申请日：2024-06-20
发明人： Hidenori OBIYA , Hirotsugu MORI
CPC分类号： H04B1/0064 , H04B1/44 , H04L5/14
摘要： A radio frequency circuit can simultaneously transfer a signal in Band A and a signal in Band B, and includes: a first power amplifier supporting a first power class; a second power amplifier supporting a second power class for a transmission power higher than a transmission power of the first power class; a switch that includes a first common terminal connected to a first antenna terminal, a first terminal, and a second terminal; a first filter connected between the first power amplifier and the first terminal, and has a first passband that includes a portion of the first band; a second filter that includes an input end connected to the second power amplifier and an output end connected to a second antenna terminal via no switch, and has a second passband that includes a portion of the second band; and a third filter connected to the second terminal.
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公开(公告)号：US20240332778A1
公开(公告)日：2024-10-03
申请号：US18742270
申请日：2024-06-13
发明人： Kazuhito OSAWA , Ryangsu KIM , Kenta SEKI
摘要： A directional coupler includes a main line, a first sub line, a second sub line, a termination circuit, a first phase shifter circuit, a first selector switch, and a second selector switch. The termination circuit terminates one of the first sub line and the second sub line. The first phase shifter circuit is disposed on a first signal path between the first sub line and the second sub line. The first selector switch performs switching between connection and non-connection between the first sub line and the first phase shifter circuit. The second selector switch performs switching between connection and non-connection between the first phase shifter circuit and the second sub line.
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3.发明公开公开(公告)号：US20240291446A1
公开(公告)日：2024-08-29
申请号：US18197175
申请日：2023-05-15
发明人： Ying CHEN , Che-Chun KUO , Tienyu CHANG
CPC分类号： H03F3/245 , H01L23/66 , H03F1/565 , H04B1/44 , H01L2223/6655 , H03F2200/294
摘要： A single-pole single-throw (SPST) radio frequency (RF) switch is provided that includes one or more switches stacked in series, and a first capacitor disposed at an input side of the SPST RF switch, in series, before the one or more switches. The SPST RF switch also includes a second capacitor disposed, in parallel, across the one or more switches, and an inductor disposed at an output side of the SPST RF switch, in series, after the one or more switches.
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公开(公告)号：US12068774B2
公开(公告)日：2024-08-20
申请号：US18312720
申请日：2023-05-05
CPC分类号： H04B1/44 , H04L27/367
摘要： A wireless transceiver. The transceiver includes: (i) a transmit signal path; (ii) a calibration path, comprising a conductor to connect a calibration tone into the transmit signal path; (iii) a receive signal path, comprising a first data signal path to process a first data and a second data signal path, different than the first data signal path, to process a second data; (iv) a first capacitive coupling to couple a response to the calibration tone from the transmit signal path to the first data signal path; and (v) a second capacitive coupling to couple a response to the calibration tone from the transmit signal path to the second data signal path.
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公开(公告)号：US20240243772A1
公开(公告)日：2024-07-18
申请号：US18415475
申请日：2024-01-17
发明人： David Richard Pehlke
摘要： A radio frequency front end system has a first transmit path and a first receive path. There is a first transmit filter within the first transmit path and a first receive filter within the first receive path. One or more switches can be configured to selectively connect a first antenna to the first transmit filter and to selectively connect a second antenna to the first receive filter to allow frequency division duplex communication over the first transmit path and the first receive path in which the first transmit path transmits over the first antenna simultaneous with the first receive path receiving over the second antenna.
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公开(公告)号：US20240243767A1
公开(公告)日：2024-07-18
申请号：US18518269
申请日：2023-11-22
申请人： VIASAT, Inc.
摘要： Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.
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公开(公告)号：US12028105B2
公开(公告)日：2024-07-02
申请号：US17868270
申请日：2022-07-19
申请人： Apple Inc.
IPC分类号： H04B1/44
CPC分类号： H04B1/44
摘要： An electronic device may include wireless circuitry with a baseband processor, a transceiver, and an antenna. The transceiver may include a transmit path, a receive path, and a loopback path that couples the transmit path to the receive path. A passive all-pass filter may be interposed on the loopback path. Control circuitry may calibrate I/Q mismatch of the wireless circuitry using the all-pass filter to optimize the radio-frequency performance of the wireless circuitry. Performing I/Q mismatch calibration using the all-pass filter may serve to minimize area consumption in the transceiver, may minimize calibration time, and may allow for calibration over a relatively wide bandwidth.
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8.发明公开公开(公告)号：US20240187023A1
公开(公告)日：2024-06-06
申请号：US18506174
申请日：2023-11-10
发明人： Boli HUANG
摘要： A high-frequency switching extender is provided, used to receive signals from external routers and devices and transmit transmission signals to external routers and devices. The high-frequency switching extender includes a high-frequency transceiver module, a high-frequency switching module, a high-frequency RF front-end module, a high-frequency filter module, a high-frequency antenna switching unit, and a high-frequency antenna. Wherein, the high-frequency switching extender has a transmission mode and a receiving mode. In transmission mode, the high-frequency switching module switches the transmission signal to the preset frequency band according to the control voltage, and the transmission signal switched to the preset frequency band is transmitted to the high-frequency antenna for transmission. In receiving mode, the high-frequency antenna switching unit switches the received signal to the preset frequency band according to the control voltage, and the received signal switched to the preset frequency band is transmitted to the high-frequency transceiver module.
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公开(公告)号：US20240154641A1
公开(公告)日：2024-05-09
申请号：US18487316
申请日：2023-10-16
申请人： Wistron NeWeb Corp.
发明人： Jun Feng LUO , Su WEI
IPC分类号： H04B1/44
CPC分类号： H04B1/44
摘要： A wireless communication circuit and a transport device for sending rescue message are provided. The wireless communication circuit is arranged in a transport device for sending a rescue message to a cellular network and includes a radio transceiver, a signal amplifier circuit, a plurality of filters, and a first switch. The radio transceiver converts a baseband signal to a radio frequency signal and determines whether the cellular network has been connected. The first switch includes an input end and a plurality of output ends, and is electrically connected between the signal amplifier circuit and the plurality of filters. The first switch connects the input end and one of the plurality of output ends in sequence until the radio transceiver determines the cellular network has been connected. The wireless radio transceiver sends the rescue message through the first switch.
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公开(公告)号：US20240146339A1
公开(公告)日：2024-05-02
申请号：US18386237
申请日：2023-11-01
发明人： David Richard Pehlke
CPC分类号： H04B1/0057 , H04B1/44
摘要： A radio frequency front end system includes a ganged filter configured to filter a transmit signal on a plurality of transmit bands. A power amplifier amplifies the transmit signal, and is directly coupled to the ganged filter. Receive circuitry receives a receive signal on a plurality of receive bands. An antenna switch module coupled to the ganged filter and an antenna selectively combines at least one transmit path with at least one receive path according to the plurality of receive bands, the plurality of transmit bands and the plurality of receive bands having no frequency overlap when concurrently active.
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