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公开(公告)号：US20230139199A1
公开(公告)日：2023-05-04
申请号：US17668388
申请日：2022-02-10
申请人： AIXlink Ltd.
发明人： Chih-Cheng Lin , Chen-Fan Tang , Sheng-Yuan Jan
摘要： A controller having a wireless transmission interface is provided. The controller includes an amplifier, an analog-to-digital converter, a digital filter, a processor, and a radio frequency signal transceiver. The amplifier is coupled to the wireless transmission interface, and generates an amplification signal according to an input signal. The analog-to-digital converter is coupled to the amplifier, and configured to convert the amplification signal into a digital format. The digital filter is coupled to the analog-to-digital converter, and configured to filter the amplification signal in the digital format to generate a filtered signal. The processor is coupled to the digital filter, and configured to perform a calculation on the filtered signal to generate a calculation result. The radio frequency signal transceiver is coupled to the processor, and obtains received information according to the calculation result and the filtered signal.
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公开(公告)号：US20230126040A1
公开(公告)日：2023-04-27
申请号：US17959136
申请日：2022-10-03
发明人： Grant Darcy Poulin
摘要： Radio frequency systems and methods adjust power amplifier operation based on power amplifier operating mode or power level to achieve a tradeoff between improved linearity at lower power levels and improved out of band noise performance and coexistence at higher power levels.
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公开(公告)号：US11632082B2
公开(公告)日：2023-04-18
申请号：US17018110
申请日：2020-09-11
申请人： Kioxia Corporation
发明人： Tomohiko Takeuchi
摘要： According to one embodiment, a semiconductor integrated circuit includes first and second power supply lines, first and second nodes, and first and second circuits. The first circuit is configured to supply a first current to the second power supply line, from the first node or the second node. The second circuit is configured to supply a second current from the first power supply line to the first node based on a magnitude of the first current, and to supply a third current from the first power supply line to the second node based on the magnitude of the first current.
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公开(公告)号：US20230114571A1
公开(公告)日：2023-04-13
申请号：US17956548
申请日：2022-09-29
发明人： Kunal Datta , Khaled A. Fayed
摘要： A power amplifier comprises a first amplification stage having an input terminal receiving a radio frequency (RF) signal to be amplified and having a first coupling unit, a second amplification stage outputting an amplified radio frequency signal and having a second coupling unit and a third coupling unit providing RF feedback to the input terminal of the first amplification stage through an RF feedback path, the second coupling unit being coupled to the first coupling unit, and the third coupling unit being coupled to the first coupling unit.
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公开(公告)号：US11626844B2
公开(公告)日：2023-04-11
申请号：US17183714
申请日：2021-02-24
申请人： Qorvo US, Inc.
发明人： Nadim Khlat , Marcus Granger-Jones
摘要： An envelope tracking (ET) radio frequency (RF) front-end circuit is provided. The ET RF front-end circuit includes an ET integrated circuit(s) (ETIC(s)), a local transceiver circuit, a target voltage circuit(s), and a number of power amplifiers. The local transceiver circuit receives an input signal(s) from a coupled baseband transceiver and generates a number of RF signals. The target voltage circuit(s) generates a time-variant ET target voltage(s) based on the input signal(s). The ETIC(s) generates multiple ET voltages based on the time-variant ET target voltage(s). The power amplifiers amplify the RF signals based on the ET voltages. Given that the time-variant ET target voltage(s) is generated inside the self-contained ET RF front-end circuit, it is possible to reduce distortion in the time-variant ET target voltage(s), thus helping to improve operating efficiency of the power amplifiers, especially when the RF signals are modulated with a higher modulation bandwidth (e.g., ≥200 MHz).
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公开(公告)号：US11621680B2
公开(公告)日：2023-04-04
申请号：US17092689
申请日：2020-11-09
发明人： Wingshing Chan , Liheng Zhou , Xinyu Zhou , Derek Ho
摘要： A power amplifier includes an active device and an output matching circuit operably connected with the active device. The output matching circuit includes a bandpass impedance transformer, in particular, a multimode bandpass impedance transformer. The multimode bandpass impedance transformer may include a multimode resonator and coupling feed lines.
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公开(公告)号：US11621678B2
公开(公告)日：2023-04-04
申请号：US17143940
申请日：2021-01-07
发明人： Isao Obu , Yasunari Umemoto , Masahiro Shibata , Kenichi Nagura
IPC分类号： H03F1/52 , H01L23/00 , H01L29/04 , H03F3/213 , H01L29/737 , H01L27/02 , H01L27/06 , H01L29/08 , H01L29/10 , H01L29/205 , H01L29/06 , H01L21/265 , H01L29/417 , H01L29/423 , H01L23/48 , H01L29/861 , H01L21/768 , H03F3/195 , H01L21/02 , H01L29/36 , H01L29/207 , H01L29/45 , H01L21/285 , H01L21/3213 , H01L21/027 , H01L29/66 , H01L21/306 , H01L21/311 , H03F1/56 , H01L23/31 , H01L23/29 , H01L23/538 , H01L25/16 , H01L21/8252
摘要： A circuit element is formed on a substrate made of a compound semiconductor. A bonding pad is disposed on the circuit element so as to at least partially overlap the circuit element. The bonding pad includes a first metal film and a second metal film formed on the first metal film. A metal material of the second metal film has a higher Young's modulus than a metal material of the first metal film.
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公开(公告)号：US20230100525A1
公开(公告)日：2023-03-30
申请号：US18057400
申请日：2022-11-21
发明人： Hiroshi OKABE
摘要： A power amplifier module includes an output-stage amplifier, a driver-stage amplifier, an input switch, an output switch, an input matching circuit, an inter-stage matching circuit, an output matching circuit, and a control circuit. The input switch selectively connects one of a plurality of input signal paths to an input terminal of the driver-stage amplifier. The output switch selectively connects one of a plurality of output signal paths to an output terminal of the output-stage amplifier. The control circuit controls operations of the driver-stage amplifier and the output-stage amplifier. The input switch, the output switch, and the control circuit are integrated into an IC chip. The control circuit is disposed between the input switch and the output switch.
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公开(公告)号：US20230099832A1
公开(公告)日：2023-03-30
申请号：US17490255
申请日：2021-09-30
发明人： Euisoo Yoo , Arup Mukherji , Rangakrishnan Srinivasan , Vitor Pereira , Zhongda Wang , Sriharsha Vasadi
摘要： In one embodiment, an integrated circuit includes: a first radio frequency (RF) circuit configured to receive and process a first RF signal having a sub-gigahertz (GHz) frequency to output a first lower frequency signal and to transmit RF signals having the sub-GHz frequency; a second RF circuit configured to receive and process a second RF signal having a frequency of at least substantially 2.4 GHz to output a second lower frequency signal and to transmit RF signals at the at least substantially 2.4 GHz; shared analog circuitry coupled to the first RF circuit and the second RF circuit, the shared analog circuitry to receive at least one of the first RF signal or the second RF signal and output a digital output signal; and a digital circuit coupled to the shared analog circuit, the digital circuit to recover message information from the digital output signal.
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公开(公告)号：US20230096484A1
公开(公告)日：2023-03-30
申请号：US17936458
申请日：2022-09-29
摘要： A method and system of compensating for component mismatch are disclosed. An example system comprises an amplifier including a current ratio measurement engine (CRME) and a modulator (DSM). The CRME is configured to obtain measurements for each possible configuration of an amplifier circuit and to pass these measurements to a processor for analysis. In the example system, the measurements are obtained by driving a bias current through two or more circuit elements and measuring the ratio in current between the two or more circuit elements, which is representative of the relative mismatch between the two or more components. The DSM is configured to receive adjustment parameters from the processor and to tune the amplifier circuit according to the adjustment parameters to thereby improve the performance of the amplifier.
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