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Patent Agency Ranking
公开(公告)号：US11815530B2
公开(公告)日：2023-11-14
申请号：US16976666
申请日：2018-03-27
Applicant: Apple Inc.
Inventor： Joerg Fuhrmann , Werner Schelmbauer , Herbert Stockinger , Dieter Pimingsdorfer
CPC classification number: G01R15/09 , G01R21/01 , H03F3/19 , H03K5/24 , H04B17/101 , H03F2200/294 , H03F2200/451
Abstract: A radio frequency (RF) power detector with a variable threshold for dynamic power detection. The RF power detector includes stacked transistors of an input stage and stacked transistors of an output stage. A DC bias voltage plus an input RF signal are applied to a control electrode on the input stage and the same DC bias voltage plus an additional DC bias voltage are applied to a control electrode on the output stage. Depending on the input power of the RF signal, a Δ current is generated in the output stage, and the output capacitor is either charged or discharged, and the output capacitor voltage is compared to a threshold to generate an output signal. The output signal may be averaged over time by two capacitors, miller capacitor and output capacitor. The output voltage of the RF power detector is an integration over time of the input RF power.
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2.发明申请公开(公告)号：US20210175958A1
公开(公告)日：2021-06-10
申请号：US16761441
申请日：2018-03-29
Applicant: Apple Inc.
Inventor： Harald Pretl , Werner Schelmbauer , Josef Holzleitner
IPC: H04B7/08 , H04B1/00 , H04B7/0413
Abstract: A method and apparatus for receiving and processing multiple carriers with multiple antennas. The device includes a plurality of antennas for receiving signals over a plurality of carriers, and a plurality of receive chains connected to each antenna for processing a signal received on each antenna. The signal received on each antenna is split into multiple receive chains for receive processing. The antennas are grouped into a plurality of sub-groups and a signal on a first carrier is received on a first sub-group of antennas and a signal on a second carrier is received on a second sub-group of antennas. A signal on a third carrier may be received on all antennas. Multiple-input multiple-output (MIMO) on the first and second carriers may be implemented using the first and second sub-group of antennas, respectively, and MIMO on the third carrier may be implemented using all antennas.
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3.发明授权公开(公告)号：US11258506B2
公开(公告)日：2022-02-22
申请号：US16761441
申请日：2018-03-29
Applicant: Apple Inc.
Inventor： Harald Pretl , Werner Schelmbauer , Josef Holzleitner
IPC: H04L5/00 , H04B7/08 , H04B1/00 , H04B7/0413
Abstract: A method and apparatus for receiving and processing multiple carriers with multiple antennas. The device includes a plurality of antennas for receiving signals over a plurality of carriers, and a plurality of receive chains connected to each antenna for processing a signal received on each antenna. The signal received on each antenna is split into multiple receive chains for receive processing. The antennas are grouped into a plurality of sub-groups and a signal on a first carrier is received on a first sub-group of antennas and a signal on a second carrier is received on a second sub-group of antennas. A signal on a third carrier may be received on all antennas. Multiple-input multiple-output (MIMO) on the first and second carriers may be implemented using the first and second sub-group of antennas, respectively, and MIMO on the third carrier may be implemented using all antennas.
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4.发明授权公开(公告)号：US10992335B2
公开(公告)日：2021-04-27
申请号：US16095761
申请日：2017-06-01
Applicant: Apple Inc.
Inventor： Ahmed Elmaghraby , Ram Kanumalli , Werner Schelmbauer , Stefan Herzinger , Peter Noest
Abstract: A transceiver for reducing a distortion component within a baseband receive signal is provided. The distortion component is caused by a baseband transmit signal. The transceiver includes a filter configured to filter the baseband transmit signal using a configurable transfer function to generate a modified baseband transmit signal. The configurable transfer function is based on a leakage component in the baseband receive signal, wherein the leakage component is caused by the baseband transmit signal. The transceiver further includes a processing unit configured to generate, based on the modified baseband transmit signal, an envelope signal representing the envelope of the modified baseband transmit signal. Moreover, the transceiver includes a combiner configured to combine the baseband receive signal and a signal related to the envelope signal.
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公开(公告)号：US20210003613A1
公开(公告)日：2021-01-07
申请号：US16976666
申请日：2018-03-27
Applicant: Apple Inc.
Inventor： Joerg Fuhrmann , Werner Schelmbauer , Herbert Stockinger , Dieter Pimingsdorfer
Abstract: A radio frequency (RF) power detector with a variable threshold for dynamic power detection. The RF power detector includes stacked transistors of an input stage and stacked transistors of an output stage. A DC bias voltage plus an input RF signal are applied to a control electrode on the input stage and the same DC bias voltage plus an additional DC bias voltage are applied to a control electrode on the output stage. Depending on the input power of the RF signal, a Δ current is generated in the output stage, and the output capacitor is either charged or discharged, and the output capacitor voltage is compared to a threshold to generate an output signal. The output signal may be averaged over time by two capacitors, miller capacitor and output capacitor. The output voltage of the RF power detector is an integration over time of the input RF power.
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