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公开(公告)号：US20240250604A1
公开(公告)日：2024-07-25
申请号：US18099674
申请日：2023-01-20
Applicant: Apple Inc.
Inventor： David M. Signoff , Fei Wang , Kefei Wu , Song Hu , Morteza Nick , Xiang Guan
Abstract: Radio frequency (RF) transmitters of a device (aggressor device) may unintentionally transmit a high-power output signal to antennas of a receiving device (victim device). In some RF systems, a victim device may have no or little protection between its antennas and transistors in an integrated circuit. Performance or lifetime of the transistors may be negatively impacted due to large voltage swings that may result from the high-power signal received from the aggressor device. To prevent or mitigate impact to performance or lifetime of the transistors due to the large voltage swings, protection circuitry including switches and a direct current (DC) power source (e.g., a charge pump) may be implemented at an input of a receiver of the victim device to shunt the power from sensitive circuit components of the victim device.
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公开(公告)号：US20230006343A1
公开(公告)日：2023-01-05
申请号：US17940969
申请日：2022-09-08
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emami-Neyestanak
Abstract: An electronic device may include a transceiver, first and second antennas, and a passive radio-frequency power distribution circuit. The distribution circuit may have a first port coupled to the transceiver, a second port coupled to the first antenna, and a third port coupled to the third antenna. The distribution circuit may include a transformer coupled between the ports. The transformer may have at least two intertwined inductors formed from conductive traces on a dielectric substrate. The intertwined inductors may be concentric about a common point. The intertwined inductors may extend from the common point to the second and third ports. The intertwined inductors may have a coil or spiral shape and may wind around the common point at least once. Intertwining the inductors may serve to minimize the lateral footprint of the distribution circuit in the device.
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Patent Agency Ranking
公开(公告)号：US11728566B2
公开(公告)日：2023-08-15
申请号：US17940969
申请日：2022-09-08
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emami-Neyestanak
Abstract: An electronic device may include a transceiver, first and second antennas, and a passive radio-frequency power distribution circuit. The distribution circuit may have a first port coupled to the transceiver, a second port coupled to the first antenna, and a third port coupled to the third antenna. The distribution circuit may include a transformer coupled between the ports. The transformer may have at least two intertwined inductors formed from conductive traces on a dielectric substrate. The intertwined inductors may be concentric about a common point. The intertwined inductors may extend from the common point to the second and third ports. The intertwined inductors may have a coil or spiral shape and may wind around the common point at least once. Intertwining the inductors may serve to minimize the lateral footprint of the distribution circuit in the device.
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公开(公告)号：US11581633B2
公开(公告)日：2023-02-14
申请号：US17014814
申请日：2020-09-08
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emami-Neyestanak
Abstract: An electronic device may include a transceiver, first and second antennas, and a passive radio-frequency power distribution circuit. The distribution circuit may have a first port coupled to the transceiver, a second port coupled to the first antenna, and a third port coupled to the third antenna. The distribution circuit may include a transformer coupled between the ports. The transformer may have at least two intertwined inductors formed from conductive traces on a dielectric substrate. The intertwined inductors may be concentric about a common point. The intertwined inductors may extend from the common point to the second and third ports. The intertwined inductors may have a coil or spiral shape and may wind around the common point at least once. Intertwining the inductors may serve to minimize the lateral footprint of the distribution circuit in the device.
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公开(公告)号：US20210067117A1
公开(公告)日：2021-03-04
申请号：US16560905
申请日：2019-09-04
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emani-Neyestanak
Abstract: An amplifier includes a first coil coupled to at least one input node. The amplifier further includes second and third coils. A first terminal of the second coil is coupled to a source terminal of a first transistor, while a second terminal of the second coil is coupled to a source terminal of a second transistor. A third coil includes first and second terminals coupled to gate terminals of the first and second transistors, respectively. Responsive to receiving an input signal, the first coil electromagnetically conveys the signal to the second and third coils.
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公开(公告)号：US20220077574A1
公开(公告)日：2022-03-10
申请号：US17014814
申请日：2020-09-08
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emami-Neyestanak
Abstract: An electronic device may include a transceiver, first and second antennas, and a passive radio-frequency power distribution circuit. The distribution circuit may have a first port coupled to the transceiver, a second port coupled to the first antenna, and a third port coupled to the third antenna. The distribution circuit may include a transformer coupled between the ports. The transformer may have at least two intertwined inductors formed from conductive traces on a dielectric substrate. The intertwined inductors may be concentric about a common point. The intertwined inductors may extend from the common point to the second and third ports. The intertwined inductors may have a coil or spiral shape and may wind around the common point at least once. Intertwining the inductors may serve to minimize the lateral footprint of the distribution circuit in the device.
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公开(公告)号：US11152905B2
公开(公告)日：2021-10-19
申请号：US16560905
申请日：2019-09-04
Applicant: Apple Inc.
Inventor： Song Hu , Sohrab Emami-Neyestanak
Abstract: An amplifier includes a first coil coupled to at least one input node. The amplifier further includes second and third coils. A first terminal of the second coil is coupled to a source terminal of a first transistor, while a second terminal of the second coil is coupled to a source terminal of a second transistor. A third coil includes first and second terminals coupled to gate terminals of the first and second transistors, respectively. Responsive to receiving an input signal, the first coil electromagnetically conveys the signal to the second and third coils.
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