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公开(公告)号：US20220085840A1
公开(公告)日：2022-03-17
申请号：US17477215
申请日：2021-09-16
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Aly Ismail , Xi Yao
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.
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公开(公告)号：US11159191B1
公开(公告)日：2021-10-26
申请号：US17019037
申请日：2020-09-11
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Aly Ismail , Xi Yao
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.
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公开(公告)号：US20240030875A1
公开(公告)日：2024-01-25
申请号：US17868115
申请日：2022-07-19
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
CPC classification number: H03F1/32 , H03F1/565 , H03F3/19 , H03F2200/165 , H03F2200/222 , H03F2200/451
Abstract: An electronic device may include wireless circuitry with a processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry may include non-linearity suppression circuitry that suppresses or reduces non-linear behavior of components such as a core amplification transistor and a degeneration inductor within the amplifier circuitry. The non-linearity suppression circuitry may include an intermodulation distortion suppression circuit having an auxiliary amplification transistor. The non-linearity suppression circuitry may include a frequency-selective filter coupled to the degeneration inductor.
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公开(公告)号：US11595075B2
公开(公告)日：2023-02-28
申请号：US17341159
申请日：2021-06-07
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry is operable in a non-carrier-aggregation mode and a carrier aggregation mode. The amplifier circuitry may include an input transformer that is coupled to multiple amplifier stages such as a common gate amplifier stage, a cascode amplifier stage, and a common source amplifier stage. The common gate amplifier stage may include switches for selectively activating a set of cross-coupled capacitors to help maintain input impedance matching in the non-carrier-aggregation mode and the carrier-aggregation mode. The common source amplifier stage may include additional switches for activating and deactivating the common source amplifier stage to help maintain the gain in the non-carrier-aggregation mode and the carrier-aggregation mode.
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公开(公告)号：US20230020706A1
公开(公告)日：2023-01-19
申请号：US17948855
申请日：2022-09-20
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry is operable in a non-carrier-aggregation mode and a carrier aggregation mode. The amplifier circuitry may include an input transformer that is coupled to multiple amplifier stages such as a common gate amplifier stage, a cascode amplifier stage, and a common source amplifier stage. The common gate amplifier stage may include switches for selectively activating a set of cross-coupled capacitors to help maintain input impedance matching in the non-carrier-aggregation mode and the carrier-aggregation mode. The common source amplifier stage may include additional switches for activating and deactivating the common source amplifier stage to help maintain the gain in the non-carrier-aggregation mode and the carrier-aggregation mode.
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Patent Agency Ranking
公开(公告)号：US11095334B1
公开(公告)日：2021-08-17
申请号：US17028598
申请日：2020-09-22
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry is operable in a non-carrier-aggregation mode and a carrier aggregation mode. The amplifier circuitry may include an input transformer that is coupled to multiple amplifier stages such as a common gate amplifier stage, a cascode amplifier stage, and a common source amplifier stage. The common gate amplifier stage may include switches for selectively activating a set of cross-coupled capacitors to help maintain input impedance matching in the non-carrier-aggregation mode and the carrier-aggregation mode. The common source amplifier stage may include additional switches for activating and deactivating the common source amplifier stage to help maintain the gain in the non-carrier-aggregation mode and the carrier-aggregation mode.
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公开(公告)号：US20230402986A1
公开(公告)日：2023-12-14
申请号：US17840093
申请日：2022-06-14
Applicant: Apple Inc.
Inventor： Xi Yao , Hao Xu , Pengbei Zhang , Aly Mohamed Mamdouh Ismail
CPC classification number: H03H7/0115 , H03H7/075 , H03H7/1741 , H04B1/18 , H03H11/12
Abstract: This disclosure is directed to filtering in a transceiver of an electronic device. In some instances, active analog filters may be deployed in the transceiver of the electronic device to achieve greater linearity and/or reduce noise in the transceiver. However, as signal bandwidth grows increasingly larger, an active analog filter may consume excessive power. To remedy the excessive power consumption, a passive ladder LC filter may be used. Some LC ladder filters may include a limited quality factor (Q), which may lead to undesirable effects in the transceiver (e.g., voltage droop). To address these undesirable effects, certain components in the LC ladder filter may be relocated from an input port to a feedback chain of an amplifier coupled to the LC ladder filter. The new structure may enable components in the LC ladder filter to be tuned without causing additional voltage droop across the LC ladder filter.
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公开(公告)号：US11894825B2
公开(公告)日：2024-02-06
申请号：US17840093
申请日：2022-06-14
Applicant: Apple Inc.
Inventor： Xi Yao , Hao Xu , Pengbei Zhang , Aly Mohamed Mamdouh Ismail
CPC classification number: H03H7/1741 , H03H7/0115 , H03H7/06 , H03H7/075 , H03H11/12 , H04B1/18
Abstract: This disclosure is directed to filtering in a transceiver of an electronic device. In some instances, active analog filters may be deployed in the transceiver of the electronic device to achieve greater linearity and/or reduce noise in the transceiver. However, as signal bandwidth grows increasingly larger, an active analog filter may consume excessive power. To remedy the excessive power consumption, a passive ladder LC filter may be used. Some LC ladder filters may include a limited quality factor (Q), which may lead to undesirable effects in the transceiver (e.g., voltage droop). To address these undesirable effects, certain components in the LC ladder filter may be relocated from an input port to a feedback chain of an amplifier coupled to the LC ladder filter. The new structure may enable components in the LC ladder filter to be tuned without causing additional voltage droop across the LC ladder filter.
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公开(公告)号：US11711105B2
公开(公告)日：2023-07-25
申请号：US17477215
申请日：2021-09-16
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Aly Ismail , Xi Yao
CPC classification number: H04B1/16 , H03F3/19 , H03G3/3036 , H03F2200/294 , H03F2200/451 , H03G2201/103 , H03G2201/307
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The low noise amplifier is operable in a non-carrier-aggregation (NCA) mode and a carrier aggregation (CA) mode. The low noise amplifier may include a first input stage, a second input stage, a complementary degeneration transformer, and an input impedance compensation circuit. During the NCA mode, the first input stage is turned on while the second input stage is turned off, the degeneration transformer is controlled to provide maximum inductance, and the compensation circuit is turned on to provide input matching. During the CA mode, the first and second input stages are turned on, the degeneration transformer is adjusted to provide less inductance, and the compensation circuit is turned off.
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公开(公告)号：US11664844B2
公开(公告)日：2023-05-30
申请号：US17948855
申请日：2022-09-20
Applicant: Apple Inc.
Inventor： Seyed Mohammad Hossein Mohammadnezhad , Xi Yao , Aly Ismail
CPC classification number: H04B1/40 , H03F1/223 , H03F3/195 , H03F3/245 , H03F3/68 , H03F2200/294 , H03F2200/451 , H03F2200/541
Abstract: An electronic device may include wireless circuitry with a baseband processor, a transceiver circuit, a front-end module, and an antenna. The front-end module may include amplifier circuitry such as a low noise amplifier for amplifying received radio-frequency signals. The amplifier circuitry is operable in a non-carrier-aggregation mode and a carrier aggregation mode. The amplifier circuitry may include an input transformer that is coupled to multiple amplifier stages such as a common gate amplifier stage, a cascode amplifier stage, and a common source amplifier stage. The common gate amplifier stage may include switches for selectively activating a set of cross-coupled capacitors to help maintain input impedance matching in the non-carrier-aggregation mode and the carrier-aggregation mode. The common source amplifier stage may include additional switches for activating and deactivating the common source amplifier stage to help maintain the gain in the non-carrier-aggregation mode and the carrier-aggregation mode.
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