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公开(公告)号：US20230283315A1
公开(公告)日：2023-09-07
申请号：US17683607
申请日：2022-03-01
Applicant: Apple Inc.
Inventor： Muhammad Adnan , Xiang Guan
CPC classification number: H04B1/40 , H03F3/19 , H03F2200/451
Abstract: Amplification circuitry is disclosed that couples neutralization transistors to amplification transistors to neutralize parasitic capacitance of the amplification transistors. Gates of a first amplification transistor and a first neutralization transistor are coupled together, and gates of a second amplification transistor and a second neutralization transistor are also coupled together. Drains of the first amplification transistor and the second neutralization transistor are coupled together, and drains of the second amplification transistor and the first neutralization transistor are also coupled together. Sources of neutralization transistors are coupled together at a node, such that a voltage swing of a first signal in the first neutralization transistor may be canceled by a voltage swing of a second signal in the second neutralization transistor. The node also couples to a resistor that prevents charge building in the neutralization transistors.
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公开(公告)号：US12136939B2
公开(公告)日：2024-11-05
申请号：US17667187
申请日：2022-02-08
Applicant: Apple Inc.
Inventor： Saikat Sarkar , Xiang Guan
Abstract: This disclosure is directed to power gain variation compensation of Radio Frequency (RF) receivers based on temperature variations. An RF receiver may include amplification circuitry having a chain of multiple amplifiers and/or passive elements. Multiple distributed and/or lumped attenuators disposed at different points between amplifiers and/or passive elements of the chain may attenuate a received RF signal to compensate for gain variations of the multiple amplifiers and/or passive elements caused by a temperature change. Accordingly, the distributed and/or lumped attenuators may improve linear response of the amplifiers and/or passive elements and signal-to-noise and distortion ratio of RF signals received at the receiver.
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公开(公告)号：US20240097729A1
公开(公告)日：2024-03-21
申请号：US18466717
申请日：2023-09-13
Applicant: Apple Inc.
Inventor： Muhammad Adnan , Abdulrahman A Alhamed , Xiang Guan , Frederic Bossu
CPC classification number: H04B1/18 , H03F1/56 , H03F3/19 , H04B1/0458 , H03F2200/451
Abstract: An electronic device may include wireless circuitry having active circuitry such as active power splitter circuitry and active power combiner circuitry. The active power splitter and combiner circuitry can include single-ended or differential amplifiers coupled to one another using single-ended coupled lines or differential coupled lines. Each set of differential coupled lines may include first and second pairs of coupled lines. The single-ended coupled lines and the differential coupled lines can provide routing and impedance matching functions. In active power splitter circuitry, multiple transmitting amplifiers may be used to drive a plurality of antennas in a phased antenna array. In active power combiner circuitry, multiple receiving amplifiers may be used to receive radio-frequency signals from the plurality of antennas in the phased antenna array.
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公开(公告)号：US20240097728A1
公开(公告)日：2024-03-21
申请号：US18339870
申请日：2023-06-22
Applicant: Apple Inc.
Inventor： Muhammad Adnan , Abdulrahman A Alhamed , Xiang Guan , Frederic Bossu
CPC classification number: H04B1/18 , H03F1/56 , H03F3/19 , H04B1/0458 , H03F2200/451
Abstract: An electronic device may include wireless circuitry having active circuitry such as active power splitter circuitry and active power combiner circuitry. The active power splitter and combiner circuitry can include single-ended or differential amplifiers coupled to one another using single-ended coupled lines or differential coupled lines. Each set of differential coupled lines may include first and second pairs of coupled lines. The single-ended coupled lines and the differential coupled lines can provide routing and impedance matching functions. In active power splitter circuitry, multiple transmitting amplifiers may be used to drive a plurality of antennas in a phased antenna array. In active power combiner circuitry, multiple receiving amplifiers may be used to receive radio-frequency signals from the plurality of antennas in the phased antenna array.
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5.发明公开公开(公告)号：US20240088836A1
公开(公告)日：2024-03-14
申请号：US18340720
申请日：2023-06-23
Applicant: Apple Inc.
Inventor： Muhammad Adnan , Abdulrahman A Alhamed , Xiang Guan
CPC classification number: H03F1/56 , H03F3/195 , H03H7/38 , H04B1/0458 , H03F2200/451 , H03F2200/534 , H03F2200/543
Abstract: An electronic device may include wireless circuitry having one or more radio-frequency amplifiers coupled to differential coupled lines. The differential coupled lines may provide routing and impedance matching for the radio-frequency amplifiers with minimal power loss. The differential coupled lines may include a first pair of coupled lines and a second pair of coupled lines. The first pair of coupled lines may include a first conductive routing path coupled to a first voltage line and a second conductive routing path routed along the first conductive routing path and coupled to a second voltage line. The second pair of coupled lines may include a third conductive routing path coupled to the first voltage line and a fourth conductive routing path routed along the third conductive routing path and coupled to the second voltage line.
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Patent Agency Ranking
公开(公告)号：US20250105869A1
公开(公告)日：2025-03-27
申请号：US18471536
申请日：2023-09-21
Applicant: Apple Inc.
Inventor： Fei Wang , Xiang Guan
IPC: H04B1/40
Abstract: An electronic device may include wireless circuitry with a transmission line path coupled between a transceiver and antenna. An amplifier may be disposed on the transmission line path. The amplifier may have a reconfigurable matching network at its output. The network may have coupled lines such as transmission line segments or transformer coils. The coupled lines may couple an input port of the network to a load port and a control port of the network. The load port may be coupled to the antenna. The control port may be coupled to an adjustable termination. The control port may receive a control signal that configures the adjustable termination to exhibit an impedance selected based on a VSWR of the antenna. The impedance of the adjustable termination may be tuned so the amplifier sees a consistent load impedance at the load port even as the VSWR of the antenna changes over time.
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公开(公告)号：US20250080066A1
公开(公告)日：2025-03-06
申请号：US18459262
申请日：2023-08-31
Applicant: Apple Inc.
Inventor： Fei Wang , Xiang Guan
Abstract: Wireless circuitry is provided that includes at least a first amplifier, a second amplifier, and a power splitting transformer coupled to the first and second amplifiers. The first amplifier can include first input transistors, and the second amplifier can include second input transistors. The power splitting transformer can include a primary coil, a first secondary coil having terminals coupled to gate terminals of the first input transistors and having a center tap configured to receive a first bias voltage, and a second secondary coil having terminals coupled to gate terminals of the second input transistors and having a center tap configured to receive a second bias voltage. The first and second amplifiers may output signals to a power combining transformer. The power combining transformer can have a first primary coil, a second primary coil, and a secondary coil all disposed within a single compact transformer footprint.
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公开(公告)号：US20240356192A1
公开(公告)日：2024-10-24
申请号：US18136168
申请日：2023-04-18
Applicant: Apple Inc.
Inventor： Fei Wang , Xiang Guan
CPC classification number: H01P5/12 , H03F3/245 , H03F2200/451
Abstract: This disclosure is directed to a series Doherty power amplifier including two-transformers. The series Doherty combiner may include a first branch including a main amplifier and a first transformer coupled to a load. In particular, a primary inductor of the first transformer may be coupled to the main amplifier and a secondary inductor of the first transformer may couple to the load. The series Doherty combiner may also include a second branch including an auxiliary amplifier and a second transformer coupled to the secondary inductor of the first transformer. The second transformer may couple to the load via the secondary inductor of the first transformer. As such, the load is coupled in series to the first branch and is coupled in series to the second branch. Moreover, the load is coupled in shunt to the main amplifier and the auxiliary amplifier.
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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：US20240106116A1
公开(公告)日：2024-03-28
申请号：US18105610
申请日：2023-02-03
Applicant: Apple Inc.
Inventor： Morteza Tavakoli Taba , Xiang Guan
Abstract: A hybrid switched-type phase shifter (STPS) may include the π-type phase shifters and T-type phase shifters to provide more stable output signals over a wide frequency range. The hybrid STPS may provide output signals based on shifting a phase of the input signal having different frequencies across the frequency range by different phase shifts with relatively similar phase drifts resulting in a reduced phase error during operation. In some cases, the phase shifters discussed above may also include a number of capacitors and/or inductors. In some embodiments, a circuitry or layout of the phase shifters may be shared to reduce a total number of capacitors and therefore reduce a circuit area of the hybrid STPS. Moreover, stacking at least two inductors of the hybrid STPS may also reduce a circuit area for shifting the phase of the input signal by the desired phase shifts across the frequency range.
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