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公开(公告)号：US12206362B2
公开(公告)日：2025-01-21
申请号：US18336761
申请日：2023-06-16
Applicant: Apple Inc.
Inventor： Milad Darvishi , Haowei Jiang
Abstract: An electronic device may include wireless circuitry having a radio-frequency mixer. The mixer may include a first pair of mixer transistors configured to receive an oscillating signal, a second pair of mixer transistors configured to receive the oscillating signal, and a bias circuit configured to receive the oscillating signal and to generate a corresponding output voltage for controlling an amount of current flowing through the first and second pairs of mixer transistors. The bias circuit can be configured as a replica envelope detection circuit. The bias circuit can include a pair of bias transistors coupled to a tail transistor that receives the output voltage of the replica envelope detection circuit.
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公开(公告)号：US11909370B2
公开(公告)日：2024-02-20
申请号：US17831261
申请日：2022-06-02
Applicant: Apple Inc.
Inventor： Milad Darvishi
CPC classification number: H03H7/0115 , H03H2/006 , H03H2/008 , H03H1/0007 , H03H2001/0014 , H03H2218/12
Abstract: An electronic device may include wireless circuitry having an LC filter. The LC filter may include first and second series inductors coupled between the input and output of the LC filter. An input capacitor can be coupled at the input of the LC filter, and an output capacitor can be coupled at the output of the LC filter. Feedforward capacitors can be cross-coupled with the first and second series inductors to at least partially or fully cancel out any parasitic capacitance associated with the first and second series inductors to mitigate any undesired self-resonant effects associated with the series inductors.
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公开(公告)号：US20230396226A1
公开(公告)日：2023-12-07
申请号：US17831261
申请日：2022-06-02
Applicant: Apple Inc.
Inventor： Milad Darvishi
CPC classification number: H03H7/0115 , H03H2/008 , H03H2001/0014 , H03H2218/12 , H03H2/006
Abstract: An electronic device may include wireless circuitry having an LC filter. The LC filter may include first and second series inductors coupled between the input and output of the LC filter. An input capacitor can be coupled at the input of the LC filter, and an output capacitor can be coupled at the output of the LC filter. Feedforward capacitors can be cross-coupled with the first and second series inductors to at least partially or fully cancel out any parasitic capacitance associated with the first and second series inductors to mitigate any undesired self-resonant effects associated with the series inductors.
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公开(公告)号：US20240429898A1
公开(公告)日：2024-12-26
申请号：US18339159
申请日：2023-06-21
Applicant: Apple Inc.
Inventor： Milad Darvishi , Seyedmohammadreza Razavian
Abstract: An electronic device may have wireless circuitry that includes a differential signal path having first and second signal lines. A pi attenuator may be disposed on the differential signal path. The pi attenuator may include a first series resistor on the first signal line, a second series resistor on the second signal line, and parallel resistors coupled between the first and second signal lines on opposing sides of the series resistors. A first capacitor may couple an input terminal of the first series resistor to an output terminal of the second series resistor and a second capacitor may couple an output terminal of the first series resistor to an input terminal of the second series resistor. The capacitors may serve to minimize phase variation as a function of attenuation level in attenuated signals output by the pi attenuator.
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公开(公告)号：US20240063771A1
公开(公告)日：2024-02-22
申请号：US17890758
申请日：2022-08-18
Applicant: Apple Inc.
Inventor： Milad Darvishi , Zhengan Yang
Abstract: An electronic device includes multiple antennas to transmit one or more signals, and a transceiver electrically coupled to the antennas. A transmitter of the transceiver may include splitter circuitry with reduced circuit area that may receive an input signal and generates multiple signals. Moreover, a receiver of the transceiver may include combiner circuitry with reduced circuit area that may receive multiple input signal and generates one output signal. The splitter and/or combiner may include combined circuitry including one or more inductors and resistors to provide a desired total impedance. Moreover, in different embodiments, the splitter and/or combiner may have different number of input or output ports.
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Patent Agency Ranking
公开(公告)号：US20230378927A1
公开(公告)日：2023-11-23
申请号：US17746714
申请日：2022-05-17
Applicant: Apple Inc.
Inventor： Milad Darvishi
CPC classification number: H03H7/466 , H03F3/19 , H04B1/16 , H03F2200/294 , H03F2200/451
Abstract: An electronic device includes multiple antennas to transmit one or more signals, and a transmitter electrically coupled to the antennas. The transmitter has splitter circuitry that receives an input signal and generates the signals. The splitter circuitry includes a pair of inductive elements that are inductively coupled together. The splitter circuitry includes capacitive elements to absorb parasitic input and output capacitance. In additional or alternative embodiments, the splitter circuitry may be in the form of combiner circuitry and disposed in a receiver of the electronic device.
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公开(公告)号：US20250155909A1
公开(公告)日：2025-05-15
申请号：US19022448
申请日：2025-01-15
Applicant: Apple Inc.
Inventor： Milad Darvishi , Georgios Palaskas
Abstract: An electronic device may include wireless circuitry having digital-to-analog converters, filters, mixers, and current buffers disposed between the filters and the mixers. The current buffers may provide proper resistance termination for the filters. The current buffers may include current mirrors formed from diode-connected n-type transistors and diode-connected p-type transistors, which collectively provide a linear input resistance. The current mirrors may receive a high voltage from a voltage regulator having a replica current mirror and proportional-to-absolute-temperature current sources.
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公开(公告)号：US20240421768A1
公开(公告)日：2024-12-19
申请号：US18336761
申请日：2023-06-16
Applicant: Apple Inc.
Inventor： Milad Darvishi , Haowei Jiang
IPC: H03D7/12
Abstract: An electronic device may include wireless circuitry having a radio-frequency mixer. The mixer may include a first pair of mixer transistors configured to receive an oscillating signal, a second pair of mixer transistors configured to receive the oscillating signal, and a bias circuit configured to receive the oscillating signal and to generate a corresponding output voltage for controlling an amount of current flowing through the first and second pairs of mixer transistors. The bias circuit can be configured as a replica envelope detection circuit. The bias circuit can include a pair of bias transistors coupled to a tail transistor that receives the output voltage of the replica envelope detection circuit.
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公开(公告)号：US20230350443A1
公开(公告)日：2023-11-02
申请号：US17734642
申请日：2022-05-02
Applicant: Apple Inc.
Inventor： Milad Darvishi , Georgios Palaskas
CPC classification number: G05F1/56 , H03H7/0115 , H04B1/04
Abstract: An electronic device may include wireless circuitry having digital-to-analog converters, filters, mixers, and current buffers disposed between the filters and the mixers. The current buffers may provide proper resistance termination for the filters. The current buffers may include current mirrors formed from diode-connected n-type transistors and diode-connected p-type transistors, which collectively provide a linear input resistance. The current mirrors may receive a high voltage from a voltage regulator having a replica current mirror and proportional-to-absolute-temperature current sources.
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公开(公告)号：US20250119099A1
公开(公告)日：2025-04-10
申请号：US18983861
申请日：2024-12-17
Applicant: Apple Inc.
Inventor： Milad Darvishi , Haowei Jiang
Abstract: An electronic device may include wireless circuitry having a radio-frequency mixer. The mixer may include a first pair of mixer transistors configured to receive an oscillating signal, a second pair of mixer transistors configured to receive the oscillating signal, and a bias circuit configured to receive the oscillating signal and to generate a corresponding output voltage for controlling an amount of current flowing through the first and second pairs of mixer transistors. The bias circuit can be configured as a replica envelope detection circuit. The bias circuit can include a pair of bias transistors coupled to a tail transistor that receives the output voltage of the replica envelope detection circuit.
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