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公开(公告)号：WO2022251442A1
公开(公告)日：2022-12-01
申请号：PCT/US2022/031057
申请日：2022-05-26
发明人： SARDA, Vivek
摘要： A delay circuit provides a programmable delay and includes an input selector circuit to select between a loop delay output signal and an input signal. A loop delay circuit provides a loop delay to the input signal and supplies the loop delay output signal. The input signal can be recirculated through the loop delay circuit to extend the range of the delay. The input selector circuit selects the feedback signal during recirculation. A variable delay circuit provides a variable delay to the loop delay output signal after the recirculation is complete and supplies a variable delay output signal. An output selector circuit selects the output of the output selector circuit during the recirculation and selects the variable delay output signal after the recirculation is complete to thereby provide a delayed signal with the delay based on the loop delay, the number of loops of recirculation, and the variable delay.
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公开(公告)号：WO2022164496A1
公开(公告)日：2022-08-04
申请号：PCT/US2021/060199
申请日：2021-11-19
发明人： XU, Zhaogeng , JIBU, Toru , LAM, Chun Sing
IPC分类号： G01R23/163 , G01R29/22 , G01R31/28 , H03H3/007
摘要： A method for improving the accuracy of a final inspection (FI) test of an acoustic wave device includes gating the feedthrough/cross-coupling (e.g., electromagnetic (EM) path) signal of the FI test data response for the tested acoustic wave device and adding a feedthrough/cross-coupling signal (e.g., EM path signal) from an engineering (EVB) test data (e.g., for a similar or identical surface acoustic device). This results in FI test data with time domain recovery of EM path signal from an EVB test, which can be compared against EVB test data (e.g. for a similar or identical surface acoustic device) to determine if the tested acoustic wave device passes inspection.
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公开(公告)号：WO2022146913A1
公开(公告)日：2022-07-07
申请号：PCT/US2021/065199
申请日：2021-12-27
发明人： LYALIN, Aleksey A.
摘要： Power amplifier having analog pre-distortion by adaptive degenerative feedback. In some embodiments, a pre-distortion circuit for an amplifier can include a transistor having an input node for receiving an input signal, an output node for providing an output signal having a gain relative to the input signal, and a common node for coupling to a ground. The pre-distortion circuit can further include a degeneration circuit implemented between the common node and the ground, with the degeneration circuit being configured to introduce a feedback response that reduces the gain when the input signal has a power level at or below a selected level. The degeneration circuit can be further configured to be disabled or provide a reduced feedback response when the input signal has a power level that exceeds the selected level.
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公开(公告)号：WO2022125768A1
公开(公告)日：2022-06-16
申请号：PCT/US2021/062595
申请日：2021-12-09
摘要： A controller enumerates a plurality of devices while operating in a daisy-chain mode of operation and then causes the devices to operate in a parallel mode of operation in which the devices are individually addressed.
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公开(公告)号：WO2021207744A1
公开(公告)日：2021-10-14
申请号：PCT/US2021/029614
申请日：2021-04-28
摘要： A coupling circuit can be configured to couple a common node to a first group of filters through a first path and to couple the common node to a second group of one or more filters through a second path. The coupling circuit can be configured such that an impedance provided by each filter of the first group for a signal in each band of the second group results in the signal being sufficiently excluded from the first path, and such that an impedance provided by each filter of the second group for a signal in each band of the first group results in the signal being sufficiently excluded from the second path. The first path can present a first impedance to the coupling circuit, and the second path can present a second impedance to the coupling circuit, such that complex part of the first impedance is a conjugate of complex part of the second impedance.
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公开(公告)号：WO2021061855A1
公开(公告)日：2021-04-01
申请号：PCT/US2020/052319
申请日：2020-09-23
摘要： Multi-level envelope tracking systems with adjusted voltage steps are provided. In certain embodiments, an envelope tracking system for generating a power amplifier supply voltage for a power amplifier is provided. The envelope tracking system includes a multi- level supply (MLS) DC-to-DC converter that outputs multiple regulated voltages, an MLS modulator that controls selection of the regulated voltages over time based on an envelope signal corresponding to an envelope of a radio frequency (RF) signal amplified by the power amplifier, and a modulator output filter coupled between an output of the MLS modulator and the power amplifier supply voltage. The envelope tracking system further includes a switching point adaptation circuit configured to control the voltage level of the regulated voltages outputted by the MLS DC-to-DC converter based on a power level of the RF signal.
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公开(公告)号：WO2021055324A1
公开(公告)日：2021-03-25
申请号：PCT/US2020/050821
申请日：2020-09-15
摘要： Surface acoustic wave device having mass-loaded electrode. In some embodiments, a surface acoustic wave device for providing resonance of a surface acoustic wave having a wavelength λ can include a quartz substrate and a piezoelectric plate formed from LiTaO3 or LiNbO3 disposed over the quartz substrate. The piezoelectric plate can have a thickness greater than 2λ. The surface acoustic wave device can further include an interdigital transducer electrode formed over the piezoelectric plate. The interdigital transducer electrode can have a mass density p in a range 1.50 g/cm3
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公开(公告)号：WO2020101949A1
公开(公告)日：2020-05-22
申请号：PCT/US2019/059867
申请日：2019-11-05
发明人： DOMINO, William J.
摘要： Apparatus and methods for phase shifting are provided herein. In certain embodiments, a phase shifter includes a group of positive phase shifting circuits, a group of negative phase shifting circuits, and a group of selection switches for controlling selection of the positive phase shifting circuits and the negative phase shifting circuits. The selection switches are formed on a semiconductor die, and are operable to connect one or more selected positive phase shifting circuits and/or one or more selected negative phase shifting circuits between an input terminal and an output terminal, thereby controlling an overall phase shift provided by the phase shifter.
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公开(公告)号：WO2020047519A1
公开(公告)日：2020-03-05
申请号：PCT/US2019/049242
申请日：2019-08-31
发明人： DARVEAUX, Robert Francis , LEE, Ki Wook , FURUSAWA, Takeshi , NANGALIA, Sundeep Nand , REISNER, Russ Alan , BALDWIN, John C.
摘要： Devices and methods related to nested filters. In some embodiments, a radio-frequency device can include a substrate, and first and second filter devices mounted on the substrate with respective support structures, such that at least a portion of the second filter device is positioned in a space defined by an underside of the first filter device and the support structures for the first filter device. Such a radio-frequency device can be, for example, a packaged module for use in an electronic device such as a wireless device.
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公开(公告)号：WO2020027974A1
公开(公告)日：2020-02-06
申请号：PCT/US2019/040415
申请日：2019-07-02
IPC分类号： H01L23/552 , H01L23/66 , H01L23/31 , H01L23/06
摘要： A packaged radio frequency module includes a package substrate. A semiconductor die is attached to the package substrate and includes one or more radio frequency circuits fabricated therein. A molding compound encapsulates the semiconductor die. An electromagnetic shielding structure at least partially covers the molding compound, the electromagnetic shielding structure having an outer layer including cobalt. A phone board assembly can include the packaged radio frequency module attached to a printed circuit board. The packaged radio frequency module can be incorporated into a mobile device.
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