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公开(公告)号：US11909355B2
公开(公告)日：2024-02-20
申请号：US17942850
申请日：2022-09-12
申请人： Apple Inc.
发明人： Hongrui Wang , Abbas Komijani
CPC分类号： H03B5/12 , H03L1/00 , H04B1/40 , H03B2200/009 , H03B2200/0092 , H03B2201/038
摘要： To prevent an undesired operating mode of voltage-controlled oscillation (VCO) circuitry from dominating a desired operating mode (e.g., an in-phase operating mode or an out-of-phase operating mode), a supply reset and ramp pulse may be provided to the VCO circuitry when switching to a new mode, such that supply voltage to the VCO circuitry is reset (e.g., set to 0 V or another reference voltage), and gradually increased or ramped up back to a steady-state voltage (e.g., used to maintain a mode) within a time duration. Additionally or alternatively, a switch control bootstrap pulse may be provided to the VCO circuitry that is bootstrapped to (e.g., applied instantaneously or concurrently with) switching the VCO circuitry to the new mode. After a time duration, the VCO circuitry may switch back to a steady-state voltage (e.g., used to maintain the new mode).
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公开(公告)号：US11894866B2
公开(公告)日：2024-02-06
申请号：US17690867
申请日：2022-03-09
申请人： Apple Inc.
发明人： Hongrui Wang , Abbas Komijani , Xinhua Chen
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H04B2001/0408
摘要： Embodiments presented herein provide apparatus and techniques to reduce a direct current (DC) voltage offset between a transmitter and receiver. Embodiments include a shared reference voltage signal generated by a reference voltage source. The receiver may include a first unit gain buffer to receive a reference voltage signal from the reference voltage source. The transmitter may be communicatively coupled to the receiver via one or more connections and may include a second unit gain buffer communicatively coupled to the first unit gain buffer via one of the connections. An amplifier (e.g., an operation amplifier) of the transmitter may include multiple positive inputs coupled to the second unit gain buffer and an offset tracker. The offset tracker may compensate for a DC offset caused by at least a power supply and/or a ground bounce.
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3.发明公开公开(公告)号：US20230403013A1
公开(公告)日：2023-12-14
申请号：US17835292
申请日：2022-06-08
申请人： Apple Inc.
发明人： Reetika K Agarwal , Abbas Komijani , Hongrui Wang
CPC分类号： H03L7/0891 , H03L7/091 , H03L7/1976 , H03L7/185 , H03L7/099
摘要： An electronic device may include wireless circuitry having mixer circuitry configured to receive oscillator signals from a partial-fractional phase-locked loop (PLL). The partial-fractional PLL may include a phase frequency detector, a charge pump, a loop filter, and a frequency divider connected in a loop. To implement the partial-fractional capability of the PLL, the frequency divider may receive a bitstream from a first order sigma delta modulator and a finite impulse response filter. The first order sigma delta modulator may output a periodic non-randomized output. The finite impulse response filter may increase the frequency of toggling of the periodic non-randomized output. Configured and operated in this way, the partial-fractional PLL can exhibit reduced phase noise.
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4.发明公开公开(公告)号：US20230378808A1
公开(公告)日：2023-11-23
申请号：US17751482
申请日：2022-05-23
申请人： Apple Inc.
发明人： Hongrui Wang , Abbas Komijani
CPC分类号： H02J50/005 , H01F27/2804 , H02J50/12 , H01F27/027 , H01F2027/2809
摘要： An electronic device may include wireless circuitry having a transformer adjustable between first, second, and third modes. The transformer may have first, second, third, and fourth inductors. The third inductor may be magnetically coupled to the first and second inductors with equal coupling constants. The fourth inductor may be magnetically coupled to the first and second inductors with inverse coupling constants. First and second adjustable capacitors coupled to the third and fourth inductors may receive control signals that place the transformer into a selected one of the first, second, or third modes. In the first mode the transformer exhibits a passband that overlaps first and second bands. In the second mode, the transformer passes signals in the second band while filtering interference in the first band. In the third mode, the transformer passes signals in the first band while filtering interference in the second band.
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公开(公告)号：US20230090770A1
公开(公告)日：2023-03-23
申请号：US17748904
申请日：2022-05-19
申请人： Apple Inc.
发明人： Hongrui Wang , Abbas Komijani
摘要： To prevent an undesired operating mode of voltage-controlled oscillation (VCO) circuitry from dominating a desired operating mode (e.g., an in-phase operating mode or an out-of-phase operating mode), a supply reset and ramp pulse may be provided to the VCO circuitry when switching to a new mode, such that supply voltage to the VCO circuitry is reset (e.g., set to 0 V or another reference voltage), and gradually increased or ramped up back to a steady-state voltage (e.g., used to maintain a mode) within a time duration. Additionally or alternatively, a switch control bootstrap pulse may be provided to the VCO circuitry that is bootstrapped to (e.g., applied instantaneously or concurrently with) switching the VCO circuitry to the new mode. After a time duration, the VCO circuitry may switch back to a steady-state voltage (e.g., used to maintain the new mode).
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公开(公告)号：US11978578B2
公开(公告)日：2024-05-07
申请号：US17823756
申请日：2022-08-31
申请人： Apple Inc.
CPC分类号： H01F27/2804 , H01F5/003 , H01F17/0013 , H01F38/14 , H03H7/0115 , H03H7/09 , H03H7/427 , H01F2017/0026 , H01F2027/2814 , H03H2001/0085
摘要： Radio frequency filtering circuitry blocks certain frequencies in an outgoing signal so that the signal may be transmitted over a desired frequency. The radio frequency filtering circuitry includes a first inductor having a first coil and a second inductor coupled to and disposed within the first coil. The second inductor has a second coil and a third coil symmetrical to the second coil. When current is applied to the radio frequency filtering circuitry, the current in the second coil causes a first induced current in the first coil and the current in the third coil causes a second induced current in the first coil, wherein the second induced current is approximately equal in magnitude and opposite in direction to the first induced current. As such, the second induced current may compensate for the first induced current.
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公开(公告)号：US20240048105A1
公开(公告)日：2024-02-08
申请号：US18485171
申请日：2023-10-11
申请人： Apple Inc.
CPC分类号： H03F3/195 , H03F3/213 , H03F2200/451 , H03F2200/294
摘要： The present disclosure relates to systems and methods for operating transceiver circuitry to transmit or receive signals on various frequency ranges. To do so, a transmitter or a receiver of the transceiver circuitry is selectively coupled to or uncoupled from an antenna of the transceiver circuitry. Additionally, radio frequency filters may be individually or collectively coupled to and/or uncoupled from the antenna to filter different frequencies in the transmitting or receiving signals.
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公开(公告)号：US20230352932A1
公开(公告)日：2023-11-02
申请号：US17661503
申请日：2022-04-29
申请人： Apple Inc.
发明人： Junjun Li , Abbas Komijani , Hongrui Wang
CPC分类号： H02H9/046 , H01L27/0255
摘要： An output circuit included in an integrated circuit may employ multiple protection circuits to protect driver devices from damage during an electrostatic discharge event. One protection circuit clamps a signal port to a ground supply node upon detection of the electrostatic discharge event. Another protection circuit increases the voltage level of a control terminal to one of the driver devices during the electrostatic discharge event to reduce the voltage across the driver device and prevent damage to the device.
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公开(公告)号：US20220416720A1
公开(公告)日：2022-12-29
申请号：US17900714
申请日：2022-08-31
申请人： Apple Inc.
IPC分类号： H03B5/12
摘要： An electronic device may include a transceiver with mixer circuitry that up-converts or down-converts signals based on a voltage-controlled oscillator (VCO) signal. The transceiver circuitry may include first, second, third, and fourth VCOs. Each VCO may include a VCO core that receives a control voltage and an inductor coupled to the VCO core. Fixed linear capacitors may be coupled between the VCO cores. A switching network may be coupled between the VCOs. Control circuitry may place the VCO circuitry in one of four different operating modes and may switch between the operating modes to selectively control current direction in each of the inductors. The VCO circuitry may generate the VCO signal within a respective frequency range in each of the operating modes. The VCO circuitry may exhibit a relatively wide frequency range across all of the operating modes while introducing minimal phase noise to the system.
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公开(公告)号：US20220415559A1
公开(公告)日：2022-12-29
申请号：US17823756
申请日：2022-08-31
申请人： Apple Inc.
摘要： Radio frequency filtering circuitry blocks certain frequencies in an outgoing signal so that the signal may be transmitted over a desired frequency. The radio frequency filtering circuitry includes a first inductor having a first coil and a second inductor coupled to and disposed within the first coil. The second inductor has a second coil and a third coil symmetrical to the second coil. When current is applied to the radio frequency filtering circuitry, the current in the second coil causes a first induced current in the first coil and the current in the third coil causes a second induced current in the first coil, wherein the second induced current is approximately equal in magnitude and opposite in direction to the first induced current. As such, the second induced current may compensate for the first induced current.
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